• default IP address is 192.168.88.1
• both wireless and LAN ports 1 to 5 are assigned to same bridge.
• LTE modem is assigned as WAN port.

Things to configure

1. Admin credential
2. Hostname
3. Default wifi password
4. Web console https
5. Updating RouterOS and LTE modem firmware without a SIM card attached

Admin credential

1. After a config reset accessing the router webconsole or ssh you will be asked to give a password for admin
2. Upload your ssh public key and assigned it to admin.

# on your local machine's terminal
scp ~/.ssh/key.pub [email protected]:./
# on Mikrotik terminal
/user/ssh-keys/ import public-key-file=key.pub key-owner=admin user=admin

Set router hostname

/system/identity/set name=yourRouterHostname

Configure default SSID passwords (2.4G/5G)

1. By default both 2.4G and 5G SSID uses the same “default” security profile.

Note: from @rextended https://forum.mikrotik.com/viewtopic.php?t=183221

All special characters must be put inside quotes, or, for one reason or another, cause errors.
Some chracters must be escaped
" if used as character, and not for contain a string, must be escaped like \"
$ if used as character, and not for start a variable or function name, must be escaped like \$
? on RouterOS 6.x Terminal must be escaped with \ like \? (stored script inside scirpt, scheduler, dhcp, ppp profiles, etc. , do not need to escape the ? )
\ the \ is the escape symbol, for use \ as character instead, escape it like \\

/interface/wireless/security-profiles/set default wpa2-pre-shared-key="yourWifiSecuredPassword" authentication-types="wpa2-psk" mode="dynamic-keys"

Configure webconsole HTTPS

1. Upload server ca bundle and server key

# on your local machine's terminal
scp server_ca-bundle.pem [email protected]:./  # cert must contain full chain/bundle server,intermediate-ca,root-ca
scp server.key [email protected]:./

2. Import certificates and assign to www-ssl service

/certificate/ import name=yourCertificateName
/ip/service/ set www-ssl certificate=yourCertificateName disabled=no

Updating RourterOS7 and LTE modem firmware without a SIM card

This creates a new bridge where one of the LAN ports can be assigned to it and obtain IP from upstream modem/router

1. Create bridge

/interface/bridge/add name=yourBridgeName comment="bridge for ethernet WAN"

2. Assign LAN port No. 5 into newly created bridge.

/interface/bridge/port/ set 4 interface=ether5 bridge=yourBridgeName

3. Add a dhcp client and assign it to newly created bridge

/ip/dhcp-client/add interface=yourBridgeName

4. Once port 5 have acquired an IP from upstream modem/router. You can perform the upgrade as directed by the official guide

Luckily this module is a chip for chip replacement of most ESP8266 module like ESP-12F

Removal of WB3s module. I used bismuth to help me in the desoldering. Bismuth lowers the melting temperature of existing solder when mixed.

Soldering of ESP12-F and associated pull-up resistor on GPIO_0 and GPIO_2 with pull-down resistor on GPIO_15 1

Intial attempt on programming ESP-12F failed as the chip doesn’t seem to respond when attempting to download the esphome firwmware.

After troubleshooting the tx and rx pin had to be isolated from the board as it prevents programming.

Re-soldering back ESP-12F, I didn’t resolder back the pull-up resistor as it doesn’t seem to affect the boot up anyway.

One advantage on going this route instead of creating your own one lets say base on a wemos d1 is that you already have a nice case w/ a superb IR filtering plus a bunch of LED array complete with supporting circuitry so you can focus on high level integration stuff.

Tools needed.

1. USB to 3.3V Serial adapter
2. 5 pcs test leads with needle tip
3. 3rd hand(s) for holding the test leads

To reflash the ESP chip you need to find the ff pads/pins in the IR blaster.

1. TX
2. RX
3. GND
4. 3.3V
5. GPIO0

Wiring usb-to-serial adapter.

Flashing with ESPHome Web.

1. Plug your usb-to-serial adapter to your PC/laptop. It would show up as port /dev/ttyUSB#
2. visit https://web.esphome.io/?dashboard_wizard using Google Chrome or Chromium browser
3. Press Connect and select your usb-to-serial adapter port.
4. Press “Prepare For Adoption”. This would take several minutes to finish.
5. Once flashing is done, unplug the usb-to-serial adapter and disconnect GPIO0 from GND.

Configure ESPHome wifi

1. Plug your usb-to-serial adapter back your PC/laptop to power up the IR blaster.
2. Wait for 10 seconds for ESPhome to boot up. Esphome will create a wifi AP with a captive portal.
3. From your PC/laptop scan your wifi for SSID ‘esphome-web-######’. Connect to that SSID.
4. Visit http://192.168.4.1 to configure ESPHome to connect to your IOT specific wifi network for security, as they say it’s the S in IOT.
5. At this point your ESPHome IR blaster is will be discoverable in ESPHome Dashboard or from Home Assistant.

Hardware versions

There are several versions of

1. LRTimelapse Pro Timer 3 and 2.5 11 , from the developer of LRTimelapse software, Gunther Wegner, this a commercial fully working unit, just buy the cable for your camera and off you go. Skip the rest of the article :p
2. The Open Source free timer LRTimelapse timer free , also from Gunther, based on Arduino Uno and common LCD/button shield, source code
3. LRTimelapse Pro Timer free Max, based on MEGA 2560 mini and common LCD/button shield. 1 . Using the free timer as the base, Hans started adding lots of features, hence the upgraded Arduino.
4. LRTimelapse Pro Timer free Max/Mega 2, using MEGA 2560 mini and TFT display configured in landscape layout.
5. LRTimelapse Pro Timer free Mega 3, using MEGA 2560 mini and TFT display configured in portrait layout.

Parts

When purchasing the kit, you also have several options to take, buy a fully assembled working kit, or buy only what you need which is the one I took. So that I could buy two sets and source the other parts locally.

Here’s the content of the kit per set that I bought

1. 1 pc x Carrier board v1.3
2. 2 pcs x 3.5mm TRS socket
3. 1 pc x Single Pole Double Throw (SPDT) Switch
4. 1 pc x TP5100 Battery charger, already configured for 8.4V
5. 1 lot x 1-row 2.54mm female headers for LCD display
6. 1 lot x 2-row 2.54mm male headers for Mega
7. 1 pc x fiber optic light guide
8. Housing and 3D printed buttons

Also included in thru email are some instructions on soldering the components, compiled firmware(v1.25 at that time), and how to upload it to Arduino using Xloader(Windows).

These are the parts I sourced locally here in the Philippines.

1. 1 unit x Arduino Mega 2560 Pro Mini
2. 1 pc x 5V to 12V DC-DC converter
3. 1 pc x LCD button shield
4. 2 pcs x BC547 General Purpose NPN Transistor
5. 1 pc x 2N4403 (BC557B)
6. 2 pcs x 4.7k ohm resistor
7. 2 pcs x 10k ohm resistor
8. 2 pcs x 1k ohm resistor
9. 1 pc x 200k ohm resistor
10. 1 pc x 3.9k ohm resistor
11. 1 pc x 2.2k ohm resistor
12. 1 pc x 9V battery
13. 1 pc x 1N5819 Schottky barrier rectifier diode (BAT48)
14. 1 pc x 220uF 16V electrolytic capacitor
15. 1 pc x 1uF 16V electrolytic capacitor
16. 1 pc x DC Socket, PCB mounted
17. 1 pc x EBL 9V 6F22 600mAh Lithium-ion Rechargeable

Assembly

Assembly is started by soldering the following components into the carrier board

1. resistors and diode
2. capacitors and transistors
3. female headers
4. SPDT switch, DC socket, and TRS socket
5. TP5100, you’ll need to use excess wires from the resistor to solder this to the carrier board

Once this is done. It would be good at this point to inspect if there are possible shorts and cold solder. I also did some testing on the TP5100 to make sure it working as expected

Without the 9V battery apply 12V via the DC socket. Both the CHG and STDY LED should light up and flash. But since those LED’s are quite bright it would be hard to see them flashing and would appear steady, try recording the LEDs with a cellphone camera with a 60FPS or faster or better with a scope.

The next step would be to solder the 2-row male headers into the Arduino on the following location shown below

Solder the Arduino into the carrier board.

Install the fiber optic light guide and fix it over the TP5100 LEDs with a hot-melt glue as shown below.

The LCD/button shield needs to be modified a bit as per instruction. This requires that the plastic in the headers on both sides be removed and the pins will need to be shortened by few millimeters so that it would mount flush in the carrier board via the female headers.

Trim the excess button wires and apply a small capton tape on the underside of the buttons this will prevent the buttons from shorting into the capacitor that is on the carrier board. What happens during my testing is that whenever I press a button the LCD backlight would turn off immediately.

Programming the firmware

If you’re using Windows you can use Xloader to upload the included firmware. For Linux I use avrdude.

Locate serial port

Plug your arduino to your computer and check the kernel message using dmesg look for something ‘ttyUSBx’

$ dmesg
[84192.594379] usb 1-1: new full-speed USB device number 5 using xhci_hcd
[84192.743985] usb 1-1: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.54
[84192.743991] usb 1-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[84192.743995] usb 1-1: Product: USB2.0-Serial
[84193.452284] usbcore: registered new interface driver usbserial_generic
[84193.452317] usbserial: USB Serial support registered for generic
[84193.459371] usbcore: registered new interface driver ch341
[84193.459975] usbserial: USB Serial support registered for ch341-uart
[84193.460653] ch341 1-1:1.0: ch341-uart converter detected
[84193.469498] usb 1-1: ch341-uart converter now attached to ttyUSB0
[84294.017798] usb 1-1: USB disconnect, device number 5
[84294.018263] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[84294.018303] ch341 1-1:1.0: device disconnected
[84579.191795] usb 1-9: reset full-speed USB device number 4 using xhci_hcd
[85197.612929] usb 1-1: new full-speed USB device number 6 using xhci_hcd
[85197.762523] usb 1-1: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.54
[85197.762530] usb 1-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[85197.762534] usb 1-1: Product: USB2.0-Serial
[85197.764473] ch341 1-1:1.0: ch341-uart converter detected
[85197.765826] usb 1-1: ch341-uart converter now attached to ttyUSB0

Upload firmware to Arduino

sudo avrdude -p ATmega2560 -P /dev/ttyUSB0 -c wiring -U flash:w:LRTimelapse_Pro_Timer_MAX_LCD_V1_25.hex -D

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e9801 (probably m2560)
avrdude: reading input file "LRTimelapse_Pro_Timer_MAX_LCD_V1_25.hex"
avrdude: input file LRTimelapse_Pro_Timer_MAX_LCD_V1_25.hex auto detected as Intel Hex
avrdude: writing flash (47294 bytes):

Writing | ################################################## | 100% 7.33s

avrdude: 47294 bytes of flash written
avrdude: verifying flash memory against LRTimelapse_Pro_Timer_MAX_LCD_V1_25.hex:
avrdude: load data flash data from input file LRTimelapse_Pro_Timer_MAX_LCD_V1_25.hex:
avrdude: input file LRTimelapse_Pro_Timer_MAX_LCD_V1_25.hex auto detected as Intel Hex
avrdude: input file LRTimelapse_Pro_Timer_MAX_LCD_V1_25.hex contains 47294 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 5.65s

avrdude: verifying ...
avrdude: 47294 bytes of flash verified

avrdude: safemode: Fuses OK (E:FD, H:D8, L:FF)

avrdude done.  Thank you.

Turning on

Issues with the LCD button

One issue I encountered was that most of the buttons in my LCD were not working, it was because of some versions of the LCD shield output a different voltage from its voltage divider circuit. This is easily fixed by enabling and disabling some “define” statements in the source code . This will use the correct voltage readout for those versions of LCD.

Timelapse demo

I did mess up the interval on this one, the interval was too short for shutter speed needed during the magic hour, I had to make changes in qDSLRDashboard w/c showed up as a sudden change in the speed of the clouds.

Updated firmware

As of this writing, I’ve already updated the firmware to v1.27 which Hans gladly provided to me when I discussed some issue running my version of LCD shield. It includes “Focus Stacking” improvement which I’m not currently using, if your primary usage is just Holy grail timelapse v1.25 would suffice. Just contact Hans to get the latest

Since this unit comes in different version and configuration you’ll need to make sure which of the changes apply to your unit.

This steps were performed on the the following configuration of Ksger T12 Soldering station.

• Hardware Version 2.1S
• PSU version v2.04
• Aluminum case

What needs to be improved

• Improve isolation of heatsink from high voltage track
• Grounding of Encoder, GX12-5M shell, and casis.
• Add transient protection diode
• Improve display alignment.

Improve PCB high voltage track isolation from heatsink.

Grounding of Encoder and GX12-5M

Adding a transient protection diode.

Improve OLED Display alignment w/ front panel.

To make the front pcb more parallel with the front panelI’ve added a spacer (a piece of solid wire) on the encoder side. Other option was to desoldered the GX12-5M and relocate the washer to the front side, but this one requires a lot of effort. The display was resoldered so that would sit more closely with the cutout in the front panel

Reference:

t12-stm32-v2-1s-soldering-station-controller-schematic-etc

modifying-the-ksger-t12-to-make-it-safe

Materials:

• Flexible duct tubing: https://s.click.aliexpress.com/e/_d8U2dMl
• eva foam:
• J&B weld plastic expoxy
• some old unused toolbox
• racheting nylon straps
• air purifier(xiaomi)

To mount the duct to the purifier I used a half side of a tool and bore a hole just enough for the duct to fit in. This will need to be reinforced since the duct is quite heavy and will need to glue in to stay in position.

Since the purifier I’m using lets air in on its side, I have covered it with an EVA foam and leave an opening just enough for the duct to increase the airflow in the duct even at low speed.

To hold the assembly to the purifier I’m using a racheting nylon strap which is good enough for now, but might have to find a better solution so that I could mount it vertically.

Here’s the extractor in action.

References:

• Dave Jones https://www.youtube.com/watch?v=ffaiKZMU0Lw

To remove the plug you’ll need to pry it off little by little on all sides using a small flat screwdriver. Chances are the plastic is brittle and when you try to pry it on one side one of the tabs might break off and will fall inside which is bad.

Clean the dried oil on the surface of the hole, use a scrub pad if necessary.

Install the new plug into the cylinder head. And thats it you’re done.

sudo dd of=/dev/sda if=/dev/zero status=progress
sudo mkfs.fat -F 12 /dev/sda
mkdir -p /tmp/p
sudo mount /dev/sda /tmp/p -t msdos -o "fat=12"

This essentially formats it to FAT12 but the files are unreadable or corrup once mounted.

sudo mkfs.fat -F 12 /dev/sda
mkfs.fat 4.1 (2017-01-24)
sudo file -s /dev/sda
/dev/sda: DOS/MBR boot sector, code offset 0x3c+2, OEM-ID "mkfs.fat", Bytes/sector 4096, sectors/cluster 4, root entries 512, sectors 2048 (volumes <=32 MB), Media descriptor 0xf8, sectors/FAT 1, sectors/track 16, heads 1, serial number 0x6abdcee4, unlabeled, FAT (12 bit)

Searching for a similar issue in the forums suggested to use Win 7 which I did try and that somehow worked. I used Win 7 to format the DS213 storage to FAT(Default) and selecting “Quick Format” http://www.minidso.com/forum.php?mod=viewthread&tid=2079&page=1#pid5441

Checking back on linux to see how the storage was formatted showed that the sectors per cluster was set to one (1).

sudo file -s /dev/sda
/dev/sdb: DOS/MBR boot sector, code offset 0x3c+2, OEM-ID "MSDOS5.0", Bytes/sector 4096, root entries 512, sectors 2048 (volumes <=32 MB), Media descriptor 0xf8, sectors/FAT 1, sectors/track 1, heads 1, reserved 0x1, serial number 0x8e66a5cc, unlabeled, FAT (12 bit)

So to make formating of DS213 work in linux and make the files readable was to override mkfs.fat sector per cluster option to one.

sudo mkfs.fat -F 12 -s1 /dev/sda
mkfs.fat 4.1 (2017-01-24)
sudo file -s /dev/sda
/dev/sda: DOS/MBR boot sector, code offset 0x3c+2, OEM-ID "mkfs.fat", Bytes/sector 4096, root entries 512, sectors 2048 (volumes <=32 MB), Media descriptor 0xf8, sectors/FAT 1, sectors/track 16, heads 1, serial number 0x998edf48, unlabeled, FAT (12 bit)

Sample screenshots made within DS213

Cleaning your AC unit should be done at least once or twice a year specifically if it’s used daily. This is to maintain it’s efficiency and prevents it from becoming a breeding ground for molds and bacteria.

WARNING: You need to de-energize the unit before starting any maintenance on it. The unit would be probably damp which makes the risk of electrocution are high. You’ll need to find the circuit breaker where your AC is assigned to and turned it off, it is usually labeled as “ACCU”. Once you have turned the breaker off, verify that the AC is no longer receiving power by trying to turn it on.

Tools and materials you’ll need:

• AC Cover/Cleaning Bag, I prefer the transparent one as it helps me see what am doing.
• Plastic
• Garden hose with adjustable spray nozzle
• Spray bottle for the coil cleaning solution
• Screwdriver
• sponge and rags
• kitchen faucet adapter, ex. M24 to 3/4”, size depends on your faucet
• Alkaline-based Coil cleaning solution: Read the label on how to mix this water, you’ll need at least around 800mL solution.

Personal Protection Equipment:

• Rubber gloves
• Safety glasses
• Face mask

1. To start the disassembly pull the lower part towards you when facing the unit and carefully unlatch it from its hinges on the bottom. This will also reveal the screws that hold the main cover.

   

2. Remove the screws from the main cover. The main cover usually latches on the top portion of the bracket, to unlatch it you’ll need to hold it at the lower part and pull it towards you and upwards.

   

3. Using a sponge remove the remaining water from the drip pan.

   

4. Remove the screws holding the drip pan from the bracket.

5. Inspect the sides of the drip pan/louver assembly, on the right side you’ll need to disconnect the wirings to the motor and power button. On the left side you’ll need to carefully disconnect the drip pipe line from drip pan.

   

   

6. Remove the drip pan/louver assembly.

   

7. Clean the main plastic cover and drip pan/louver assembly and set aside.

8. Using a plastic bag, cover the electronics on the right side of the unit. Be sure the cover extends fully at the back.

   

9. Put on the AC bag cover to the unit. The elastic part of the cover goes toward the backside of the unit.

   

10. For the AC cover drain hose, you can either use a pail or just route it outside of the window as I did, just make someone hold it or secure it somehow so that it won’t move out of the position when the water starts draining later.

    

11. Do a pre-rinse to remove some of the dirt from the coil and blower fan. The pressure from the faucet should be enough to dislodge most of the dirt from the unit. Never use a fixed pressure washer on the coil as it’s too strong and will damage the coil fin. https://www.speedclean.com/wp-content/uploads/2016/05/Powerwashed-Coil-2-600x600.jpg

12. Spray the coil cleaner solution on the coil and blower fan. Let it sit for 5 to 10 minutes. It should start making bubbles in a few minutes. Be careful handling this solution though this alkaline based, it will still cause some irritation when it gets in contact with your skin or eyes.

    

13. Rinse out the solution with water and inspect to see if there are remaining dirt. You might need to reapply the solution a second time to soften up stubborn dirt. Rinse afterward.

    

14. Once done with the final rinse. Let the unit dry off, use an electric fan to speed up the process.

15. While waiting for the indoor unit to dry off, do clean the outside unit’s coil using the cleaning solution and water no need to disassemble anything.

16. Once the indoor unit is almost dry, reassemble the main cover and drip pan back into the indoor unit.

Integrate staticman frontend to a hugo themes: post(single) https://dancwilliams.com/hugo-staticman-nested-replies-and-email-notifications/#

Note: things note covered above.

1. include the counterpart of staticman “path” to config.yml

[data]
  comments = "data/comments/{options.entryId}"

1. Buid zap tool. link

2. Install Ruckus Speedlflex on Node #1 and #2.

3. Test basic connectivity between Node #1 and #2 using the app Speedflex itself

   

   .

   

4. On the control(laptop), run zap client

$ ./bin/linux/zap -s192.168.1.3 -d192.168.1.4
./bin/linux/zap version 1.83, Copyright ( C ) 2004-2009 Ruckus Wireless, Inc. All Rights Reserved.
Built Jul 29 2020 at 10:29:36
Engaging default options -p50000 -n1000 -l1472 -q0x0

    0: 192.168.1.3->192.168.1.4    233=rx   0=dr   0=oo   0=rp   233=rx in    51.7ms    53.0mbps    53.0 | 53.0 53.0 53.0 53.0 53.0 53.0
    1: 192.168.1.3->192.168.1.4    546=rx   0=dr   0=oo   0=rp   313=rx in    50.3ms    73.2mbps    63.1 | 73.2 53.0 53.0 53.0 53.0 53.0
    2: 192.168.1.3->192.168.1.4    628=rx   0=dr   0=oo   0=rp    82=rx in    59.6ms    16.2mbps    47.5 | 73.2 53.0 16.2 16.2 16.2 16.2
    3: 192.168.1.3->192.168.1.4    769=rx   0=dr   0=oo   0=rp   141=rx in    68.1ms    24.4mbps    41.7 | 73.2 24.4 16.2 16.2 16.2 16.2
    4: 192.168.1.3->192.168.1.4   1081=rx   0=dr   0=oo   0=rp   312=rx in    50.7ms    72.5mbps    47.9 | 73.2 53.0 16.2 16.2 16.2 16.2
    5: 192.168.1.3->192.168.1.4   1337=rx   0=dr   0=oo   0=rp   256=rx in    50.3ms    59.9mbps    49.9 | 73.2 53.0 16.2 16.2 16.2 16.2
    6: 192.168.1.3->192.168.1.4   1547=rx   0=dr   0=oo   0=rp   210=rx in    51.2ms    48.3mbps    49.6 | 73.2 53.0 16.2 16.2 16.2 16.2
    7: 192.168.1.3->192.168.1.4   1790=rx   0=dr   0=oo   0=rp   243=rx in    71.9ms    39.8mbps    48.4 | 73.2 48.3 16.2 16.2 16.2 16.2
    8: 192.168.1.3->192.168.1.4   1909=rx   0=dr   0=oo   0=rp   119=rx in    50.8ms    27.6mbps    46.1 | 73.2 48.3 16.2 16.2 16.2 16.2
    9: 192.168.1.3->192.168.1.4   2097=rx   0=dr   0=oo   0=rp   188=rx in    85.8ms    25.8mbps    44.1 | 73.2 39.8 16.2 16.2 16.2 16.2
   10: 192.168.1.3->192.168.1.4   2104=rx   0=dr   0=oo   0=rp     7=rx in    80.1ms     1.0mbps    40.2 | 73.2 39.8 16.2  1.0  1.0  1.0
   11: 192.168.1.3->192.168.1.4   2127=rx   0=dr   0=oo   0=rp    23=rx in    96.3ms     2.8mbps    37.0 | 73.2 27.6  2.8  1.0  1.0  1.0

5. How to analyze result http://www.enterprisenetworkingplanet.com/netos/article.php/3861171/Zap-Provides-Open-Source-Wireless-Testing.htm http://www.revolutionwifi.net/revolutionwifi/2012/01/measuring-wi-fi-performance-using.html

Shortcut using docker

https://github.com/j3ffrw/httpd/tree/cache_buster/2.4/alpine

Details of building Apache Benchmarch(httpd) from source

Linux Mint 19.1

1. Build openssl

wget https://www.openssl.org/source/old/1.1.1/openssl-1.1.1e.tar.gz
tar xvzf openssl-1.1.1e.tar.gz

cd openssl-1.1.1e
mkdir /opt/ssl
./config --prefix=/opt/ssl --openssldir=/opt/ssl no-ssl2 shared zlib
make -j4
make install

2. Test openssl

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/ssl/lib /opt/ssl/bin/openssl version -a
echo "" | LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/ssl/lib /opt/ssl/bin/openssl s_client -connect www.google.com:443

3. Build httpd 2.4.43

wget https://downloads.apache.org//httpd/httpd-2.4.43.tar.gz
tar xvzf httpd-2.4.43.tar.gz

cd httpd-2.4.43/srclib
wget https://downloads.apache.org//apr/apr-1.7.0.tar.gz
tar xvzf apr-1.7.0.tar.gz
ln -s apr-1.7.0 apr
wget https://downloads.apache.org//apr/apr-util-1.6.1.tar.gz
tar xvzf apr-util-1.6.1.tar.gz
ln -s apr-util-1.6.1 apr-util
cd ..
# Apply ab.c.patch if desired
# https://github.com/j3ffrw/httpd/blob/cache_buster/2.4/alpine/ab.c.patch

./configure --with-included-apr --enable-static-ab --with-ssl=/opt/ssl/ --enable-ssl-staticlib-deps --enable-mods-static=ssl --enable-ssl
make -j4

4. Test ab

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/ssl/lib ./support/ab -V

References: https://chrismiles.livejournal.com/21720.html https://rainbow.chard.org/2012/09/14/using-ab-to-benchmark-with-different-or-random-requests/

cd content/posts
find . -maxdepth 1 -type f | grep -v index | while read line; do echo $line; mkdir ${line%%\.md}; mv $line ${line%%\.md}/index.md;done

3. Cleanup each post, convert image reference to shortcode equivalent vim search and replace snippets

%s/^M//g
%s/>/>/g
%s/&lt;/</g
%s/\\_/_/g
%s/&#8217;/'/g
%s/&#8211;/-/g
%s/<\/p>//g
%s/<p>//g
%s/</pre>//g
%s/&#8220;/"/g
%s/&#8221;/"/g
%s/<br\ \/>//g

4. Deploy at last. https://gohugo.io/hosting-and-deployment/hosting-on-github/

References:

https://laurakalbag.com/processing-responsive-images-with-hugo/

https://gohugo.io/hosting-and-deployment/hosting-on-github/

Xbee   to   Max32 
DOUT ------ 1(TX0)
DIN  ------ 0(RX0)
VCC  ------ 3.3V
GND  ------ GND
RST to GND ( This is to deactivate the max32 mcu)

Ref:

Arduino Uno to Xbee

Parallax XBee USB Adapter Board

http://www.parallax.com/product/32400

Using X-CTU on linux

http://lizard43.blogspot.com/2008/10/x-ctu-with-linux.html

Chipkit Max32 Schematics

http://www.digilentinc.com/Data/Products/CHIPKIT-MAX32/chipKIT%20Max32_bysa_sch.pdf

www.circuit-help.com.ph

www.innovationph.com/

www.relixtechnologies.com/ http://www.tipidpc.com/useritems.php?username=relixtech

www.gadgetpinas.ph http://www.tipidpc.com/useritems.php?username=SOMASEGAR (Arduino’s and raspberry pi)

http://www.dynamodo.com

http://nipahut.com.ph/index.html

http://ph.element14.com/

http://depmechatronics.wordpress.com/

http://www.newportelec.com/ic.html

http://www.dynamodo.com/

mkdir ~/backup; cd ~/backup
sfdisk -d /dev/sdx > sfdisk_dump
fdisk -l /dev/sda > fdisk_listing

LVM metadata backup

vgcfgbackup; cp /etc/lvm/backup/vg_groupname ~/backup

LUKS header

1. locate partition(s) with luks using blkid fdisk -l 2>&1 | cut -d' ' -f1 | grep "\/dev" | while read line; do blkid -p $line | grep crypto | cut -d: -f1; done or using cryptsetup fdisk -l 2>&1 | cut -d' ' -f1 | grep "\/dev" | while read line; do cryptsetup isLuks $line; if [ $? = 0 ]; then echo "luks found on $line"; fi done

2. actual backup cryptsetup luksHeaderBackup --header-backup-file luksHeaderBackup /dev/sdx#

NOTE: be sure to secure luksHeader by encrypting it using gpg -c luksHeaderBackup

mkdir -p isos/mountp
cp udfimage.iso isos
cd isos
geteltorito udfimage.iso > boot.bin
mount -o loop -t auto udfimage.iso mountp
cp -r mountp udfimagecontents
cp boot.bin udfimagecontents
mkisofs -udf -b boot.bin -no-emul-boot -hide boot.bin -relaxed-filenames -joliet-long -D -o newimage.iso udfimagecontents

reference: http://poppleit.com/how-to-edit-windows-7-install-dvd-extract-boot-image-and-create-iso-04-04-2011/

openssl version

OpenSSL 1.0.0-fips 29 Mar 2010

cd /etc/pki/tls/certs
openssl genrsa -out mycert.pem 2048
ls -alh mycert.*
openssl req -new -key mycert.pem -out mycert.csr
ls -alh mycert.*
openssl x509 -req -days 365 -in mycert.csr -signkey mycert.pem -out mycert.crt
ls -alh mycert.*
cp mycert.pem mycert.csr /etc/pki/tls/private/

# A single SSL enabled virtual host

httpd-2.2.15-28.el6.centos.i686

mySslEnabledVirtHost.conf

LoadModule ssl_module modules/mod_ssl.so
Listen 443
SSLPassPhraseDialog  builtin
SSLSessionCache         shmcb:/var/cache/mod_ssl/scache(512000)
SSLSessionCacheTimeout  300
SSLMutex default
SSLRandomSeed startup file:/dev/urandom  256
SSLRandomSeed connect builtin
SSLCryptoDevice builtin

<VirtualHost _default_:443>
        SSLEngine on
        SSLCertificateFile /etc/pki/tls/certs/mycert.crt
        SSLCertificateKeyFile /etc/pki/tls/private/mycert.pem
        <Directory /var/www/myweb>
                AllowOverride All
        </Directory>
        DocumentRoot /var/www/myweb
        ServerName subdomain.mydomain.com:443
</VirtualHost>

List of things to fix:

1. Canon EF-S 18-55mm 3.6-5.6 IS stock lens – problem: auto focus kaput

2. Quantaray LD 70-300mm – problem: auto focus kaput.

Let’s start off with quantaray.

This one seems to have gear problem since when it tries to drive the focus you could only hear the motor whirl freely.

The cause of the problem was that the gear’s upper tooth on the right were all strip, I don’t know what cause this, since the lens is not mine and was borrowed from my uncle.

A workaround is to swap the gears position since both are identical and the second gear position seems to not use those tooth anyway.

This blog will be mostly screenshot with little description on what it does, since there are lots of explanation being offered on the web. check my references at the end of this post.

Network diagram:

Requirements:

Pfsense – for this demonstration i was using 2.1-BETA1

Freeradius – 1.6.7 pfsense package

Wifi Access point – buffalo whz-hp-g300nh2 running on ddwrt. (any AP should work as long it is capable using WPA Ent.)

Any WPA/WPA2 compliant client. – Laptop with Windows 7.

Procedure:

A: Generate Certificates Needed.

1. Login to pfsense web interface and go to Certificate Manager.

2. Create CA.

   

   

3. Create Server Certificate.

   

   

B: Configure Freeraduis on pfsense.

1. Go to Services -> Freeradius.

2. Create a User. username: wifiUser1 password: 123456

   

3. Create an authenticator entry in NAS/Client. IP: 10.0.1.150 , Client Shared Secret: myApSecret

   

   On the screenshot below I also added several entries which I use for troubleshooting and testing freeradius. For this demonstration we only need the 10.0.1.150

   

4. Create an interface.

   

5. Configure EAP.

   

C. Configure Access Point

D. Import of CA.crt to Windows 7

1. Export CA.crt from pfsense Certificate Manager.

2. Import CA.crt into MMC Certificate add-in. Be sure to import it in “Trusted Root Certification Authorities”

   

Once you connect to your Access point you just configured windows will require you to enter a Username and Password, use the one we have made above. You will also get a warning stating that the Certificate is invalid or is unknown, just select Connect on that part since were using a self-signed certificate.

References:

http://doc.pfsense.org/index.php/FreeRADIUS_2.x_package#EAP-TLS

http://www.smallnetbuilder.com/wireless/wireless-howto/30213-how-to-setting-up-freeradius-for-wpa-a-wpa2-enterprise-part-2

Status: * Decoding part – done.

• Encoding part – not working – I need to check the 555 timer via scope(which i dont have) to verify the modulated frequency.

BOM:

• 1 BASIC Stamp 2e processor PBASIC; variant Basic Stamp 2e
• 1 Electrolytic Capacitor package 100 mil [THT, electrolytic]; capacitance 1µF; voltage 6.3V
• 1 Ceramic Capacitor package 100 mil [THT, multilayer]; capacitance 0.01µF; voltage 6.3V
• 1 TSOP312.., 314.. package THT; row single; pin spacing 0.1in (2.54mm); pins 3
• 1 Infrared LED - 5mm package 5 mm [THT]; leg yes; color Infrared (940nm)
• 1 150 Ω Resistor package THT; tolerance ±5%; bands 4; resistance 150Ω; pin spacing 400 mil
• 3 220 Ω Resistor package THT; tolerance ±5%; bands 4; resistance 220Ω; pin spacing 400 mil
• 1 470 Ω Resistor package THT; tolerance ±5%; bands 4; resistance 470Ω; pin spacing 400 mil
• 1 Rotary Potentiometer (Small) maximum resistance 10kΩ
• 1 555 Timer package DIP8 [THT]

Schematic

Captured IR code using a IR phototransistor connected to a PC/Laptop sound card.

Sample decoding session using Basic Stamp Editor debug terminal.

Measuring Start bit:
Press several random keys 15 times at least 1 second apart
15 of 15
Start pulse range: uS , units
LOW: 2916us - 3672us , 1474-1842
High: 4104us - 4104us , 2059-2062
Skip pulse histogram:[Y/n] n
Press a several random keys repeatedly
00: Width units         0       Width us        0-36     60
12: Width units         216     Width us        432-468  25
13: Width units         234     Width us        468-504  37
14: Width units         252     Width us        504-540  12
15: Width units         270     Width us        540-576  2
16: Width units         288     Width us        576-612  3
17: Width units         306     Width us        612-648  6
43: Width units         774     Width us        1548-1584       20
44: Width units         792     Width us        1584-1620       204
45: Width units         810     Width us        1620-1656       14
62: Width units         1116    Width us        2232-2268       105
Enter low bit max width (in cycles,see histogram): 288
Enter high bit max width (in cycles,see histogram): 810
Press a key to decode
Bit Count: 32
LSB to MSB: %11111101 %00000010 %00000111 %00000111 FD020707
Transmit code LSB->MSB:[Y/n] n
Retransmit code LSB->MSB:[Y/n] n
Bit Count: 32
LSB to MSB: %11111011 %00000100 %00000111 %00000111 FB040707
Transmit code LSB->MSB:[Y/n] n
Retransmit code LSB->MSB:[Y/n] n
Bit Count: 33
LSB to MSB: %11111011 %00000100 %00000111 %00000111 FB040707
Transmit code LSB->MSB:[Y/n]

update-grub2

GRUB_DEFAULT=0

GRUB_HIDDEN_TIMEOUT=0

GRUB_HIDDEN_TIMEOUT_QUIET=true

GRUB_TIMEOUT=10

GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor”

GRUB_CMDLINE_LINUX=””

sudo rmmod nvidia
sudo tee /proc/acpi/bbswitch <<<OFF

check the output of dmesg if the ff shows

bbswitch: device 0000:01:00.0 is in use by driver 'nvidia', refusing OFF

if it does contain the above message, find which application using it and kill it. Then try turning it off again.

sudo lsof -n -w -t /dev/nvidia*

1. Enter Dell’s IPMI server management configuration utility. (Ctrl+E)

2. Set “IPMI over LAN” to “On”.

3. Configure “IPMI LAN Channel”, choose either static or dynamic.

4. Set “VLAN Enable” to “Off”.

5. Set “Administrator Account” to “Enable”

6. Set Username and password.

7. Press Esc key and select Save option.

BIOS:

1. Enter Dell’s BIOS. (F2)

2. Configure “Serial Communication” to be “On with Console Redirection via COM2”. Dell’s BMC is connected to COM2.

   

3. Set “Baud” and “Remote Terminal Type”. “115200”, “VT100/VT220”.

4. Save and exit.

CentOS 6.3

1. Edit /boot/grub/grub.conf using vi/gedit.

2. Insert the ff lines below “hiddenmenu” option. This redirect console to 2nd serial port(COM2) where BMC is connected.

serial --unit=2 --speed=115200
terminal --timeout=8 console serial

3. Comment out splashimage.

#splashimage=(hd0,0)/grub/splash.xpm.gz

4. Append the ff lines to kernel options

console=tty0 console=ttyS1,115200n8

kernel /vmlinuz-2.6.9-42.0.10.ELsmp ro root=LABEL=/ console=tty0 console=ttyS1,19200n8

5. Save and exit.

Testing.

On another terminal connect using the ff command.

ipmitool -I lanplus -H <IPofServerIPMI> -U user -a sol activate

Ref:

http://www.symantec.com/connect/articles/how-do-sol-serial-over-lan-aka-console-redirection-dell-servers

http://www.dell.com/downloads/global/power/ps4q04-20040204-murphy.pdf

http://www.cyberciti.biz/faq/linux-serial-console-howto/

http://lonesysadmin.net/2007/06/21/how-to-configure-ipmi-on-a-dell-poweredge-running-red-hat-enterprise-linux/

#include <string.au3>
#include <Array.au3>
#Include <File.au3>
#Include <FF.au3>
#include <Date.au3>

Global $Paused
HotKeySet("{PAUSE}", "TogglePause")
HotKeySet("{ESC}", "Terminate")

$emailList="emaillist.csv"
$fowardEmailto="[email protected]"
$cpanelEmailForwardingPage="https://yourcpanel.com:2082/cpsess8672753610/frontend/x3/mail/addfwd.html"

_FFConnect()

if _FFIsConnected() Then
	; do nothing
Else
	
	ConsoleWrite("Not Connected " & @CRLF)
EndIf

; check file if it exist
$file = FileOpen($emailList,0) 

if $file=-1 Then
	MsgBox(0,"error","File does not exist or cant be read")
	Exit
EndIf

; open file containing emails and put contents to an array
Dim $aRecords

_FileReadToArray($emailList,$aRecords)

MsgBox(0, "", "size: " & $aRecords[0])

For $x=1 to $aRecords[0]
	_FFOpenURL($cpanelEmailForwardingPage)
   If($aRecords[$x] <> $fowardEmailto) Then
	  writeForwarder($aRecords[$x])
   
	EndIf
Next

Exit

Func writeForwarder($email)
	$temp1 = StringSplit($email, "@")
	ConsoleWrite("email: " & $email & @CRLF)
	ConsoleWrite("name: " & $temp1[1] & @CRLF)
	ConsoleWrite("domain: " & $temp1[2] & @CRLF)
	
	; Enter email on field
	_FFSetValue($temp1[1], "email", "id")
	
	; Enter email domain on select dropdown box
	$test2='//select[@name="domain"]//option[@value="' & $temp1[2] & '"]'
    _FFXPath($test2, 'selected=true', 9)
	
	; Enter emaill address to forward email
	_FFSetValue($fowardEmailto, "fwdemail", "id")
	
	; submit fom
	_FFFormSubmit()
	
	;Sleep(2000)
EndFunc

Func TogglePause()
	$Paused = NOT $Paused
	While $Paused
		Sleep(100)
		ToolTip('Script is "Paused"',0,0)
		WEnd
	EndFunc
	
Func Terminate()
	Exit 0
	EndFunc

todo:

v.2 shorten code.

v.3 use recursion

import java.util.logging.Level;
import java.util.logging.Logger;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 * even: right side move.
 * odd: left side move.
 */

/**
 *
 * @author Jefferson M. Fermo 
 * 
 * Iterative solution of tower of Hanoi.
 * 
 * 
 */
public class Hanoi {

    private Peg[] pegs;
    
    private final int NUMBEROFTOWERS = 3;
    
    private boolean directionOfMoveIsRight = false;
    
    private long numberOfMoves = 0;
    
    private int discCount = 0;
    
    int currentPeg = 0;
        
    int lastPegMove = 0;
    
    int moves = 0;
    
    public Hanoi(int discCount) throws Exception {
        
        this.discCount = discCount;
        
        // (N^2)-1
        numberOfMoves = (long) Math.pow(2, discCount)-1;
        
        System.out.println("moves: " + numberOfMoves);
        
        
        // determine the movement of disc based on its quantity.
        if (discCount % 2 == 1) {
            System.out.println("odd");
            directionOfMoveIsRight = false;
        }else{
            System.out.println("even");
            directionOfMoveIsRight = true;
        }            
        
        pegs = new Peg[NUMBEROFTOWERS];
        
        // create pegs with slots equal to the total number of disc.
        for (int cntr = 0; cntr < NUMBEROFTOWERS; cntr++) {
            pegs[cntr] = new Peg(discCount);
        }
        
        
        for (int cntr = 0; cntr < discCount; cntr++) {
            Disc disc = new Disc(discCount-cntr);
            
            pegs[0].populatePeg(disc);
        }
        
        System.out.println("Initial content");
        
        for (Peg peg1 : pegs) {
                System.out.println(peg1);
        }
        
        System.out.println("**************");
        
        //System.out.println("next peg transfer disc #" + nextPeg(pegs[1]).getPegNumber());
        
        
    }
    
    public void solve() throws Exception{
        
        for (moves = 0; moves < numberOfMoves; ) {
            
            Peg peg = pegs[currentPeg];
            
            moveDiscFromPeg(peg);
            
            if ((currentPeg == 0 & lastPegMove == 2) | (currentPeg == 2 & lastPegMove == 0)) {
                currentPeg = 1;
            }else if((currentPeg == 0 & lastPegMove == 1) | (currentPeg == 1 & lastPegMove == 0)){
                currentPeg = 2;
            }else if((currentPeg == 1 & lastPegMove == 2) | (currentPeg == 2 & lastPegMove == 1)){
                currentPeg = 0;
            }
            
        }
        
        for (Peg peg1 : pegs) {
            System.out.println(peg1);
        }
        
    }
    
    
    private int moveDiscFromPeg(Peg currentPeg) throws Exception{
    
        int invalidNextPeg = 0;
        
        int movesMade = 0;
        
        Peg peg = currentPeg;
        
        int lastPeg = 0;
        
        // there are only 2 possible moves in a 3 tower.
        while (invalidNextPeg <= 2) {         
            
            Peg nextPeg = nextPeg(peg);
            
            if (currentPeg.getPegNumber() == nextPeg.getPegNumber()) {
                return movesMade;
            }
            
            //System.out.println("is move legal? " + currentPeg.getPegNumber() + ", " + nextPeg.getPegNumber());
            
            if (isNextMoveLegal(currentPeg, nextPeg)){
                
                moveDisk(currentPeg, nextPeg);
                                
                moves++;
                
                invalidNextPeg = 0;
                
                lastPegMove = nextPeg.getPegNumber();
                
            }else{
                
                invalidNextPeg++;
                
            }
            
            peg = nextPeg;            
        }
    
        System.out.println("last peg: " + lastPeg);
            
        
        return movesMade;
    }
    
    /**
     * Checks if the move is legal from source to destination peg.
     * A move is legal if the following has been met:
     * 1. source peg contains a disc and destination peg is empty.
     * 2. disc at the top of destination peg is bigger than the disc on top of source peg. Both pegs are not empty.
     * A move is considered invalid if:
     * 3. source peg does not contain a disc and destination contains a disc.
     * 4. disc at the top of destination peg is smaller than the disc on top of source peg. Both pegs are not empty.
     * 5. both pegs does not contain a disc.
     * 
     * @param sourcePeg Peg where disc will be taken
     * @param destPeg   Peg where disc will be placed
     * @return  returns true if move is legal based on rule #1 and #2
     */
    
    private boolean isNextMoveLegal(Peg sourcePeg, Peg destPeg){
        
        // rule #1
        if (destPeg.getTopIndex() == -1 & sourcePeg.getTopIndex() != -1) {
            return true;
        // rule #3    
        }else if(sourcePeg.getTopIndex() == -1 & destPeg.getTopIndex() != -1){
            return false;
        }else if(sourcePeg.getTopIndex() != -1 && destPeg.getTopIndex() != -1){
            Disc sourceDisk = sourcePeg.readTopDisc();
            Disc destDisk = destPeg.readTopDisc();
            
            //rule #2
            if (destDisk.getSize() > sourceDisk.getSize()) {
                return true;
            //rule #4
            }else{
                return false;
            }
        //rule #5    
        }else if(sourcePeg.getTopIndex() == -1 & destPeg.getTopIndex() == -1){
            return false;
        }
        
        return false;
        
    }
    
    private Peg nextPeg(Peg currentPeg){
    
        int pegNumber = currentPeg.getPegNumber();
        
        int nextPegNumber = 0;
        
        if (directionOfMoveIsRight) {
            int tmp = pegNumber + 1;
            
            if (tmp < 3) {
                nextPegNumber = tmp;
            }else{
                nextPegNumber = 0;
            }
        }else{
            int tmp = pegNumber - 1;
            
            if (tmp < 0) {
                nextPegNumber = 2;
            }else{
                nextPegNumber = tmp;
            }
        }
        
        return pegs[nextPegNumber];
    }
    
    private boolean moveDisk(Peg sourcePeg, Peg destinationPeg) throws Exception{
    
        Disc disc = sourcePeg.getDisk();
        
        destinationPeg.putDisc(disc);        
        
        return false;
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try {
            // create 3 towers(default) with disc from 1 to 25 ascending.
            Hanoi hanoi = new Hanoi(25);
            
            hanoi.solve();
            
        } catch (Exception ex) {
            Logger.getLogger(Hanoi.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}


class Peg{

    private Disc[] disc;
    
    private int topIndex = -1;
    
    private int discCount = 0;
    
    private static int pegNumber = 0;
    
    private int myPegNumber = 0;
    
    Peg(int discCount){
        disc = new Disc[discCount];
        this.discCount = discCount;
        myPegNumber = pegNumber++;
    }

    public Disc readTopDisc(){
        
        if (topIndex == -1) {
            return null;
        }else{
            return disc[topIndex];
        }
        
    }

    public int getTopIndex() {
        return topIndex;
    }
    
    public Disc getDisk(){
        
        if (topIndex == -1) {
            return null;
        }else{
            Disc disk = this.disc[topIndex];
            this.disc[topIndex] = null;
            topIndex--;
            return disk;
        }
    }
    
    public void populatePeg(Disc disc) throws Exception{
        
        if (topIndex <= discCount) {
            topIndex++;
            
            this.disc[topIndex] = disc;
            System.out.print("Added disk #" + disc.getSize() + " at :" + topIndex + "\n");
            
        }else{
            throw new Exception("Peg overflowed with disk");
        }
    }
    
    public void putDisc(Disc disc) throws Exception{
        
        if (topIndex <= discCount) {
            topIndex++;
            
            this.disc[topIndex] = disc;
            //System.out.print("Added disk #" + disc + " at P" + myPegNumber + ":" + topIndex + "\n");
            
        }else{
            throw new Exception("Peg overflowed with disk");
        }
    }

    public int getPegNumber() {
        return myPegNumber;
    }
    
    
    @Override
    public String toString(){
    
        StringBuilder string = new StringBuilder();
        
        string = string.append("\nPeg #").append(myPegNumber).append("\t");
        
        for (int cntr = 0; cntr <= topIndex; cntr++) {
            string = string.append(disc[cntr].getSize()).append(",");
        }
        
        //string = string.append("\n");
        
        return string.toString();
    }
    
}

class Disc{

    int size;
    
    public Disc(int number) {
        size = number;
    }

    public int getSize() {
        return size;
    }
    
    @Override
    public String toString(){
        return "" + size;
    }
    
}

also allow user to sudo gopenvpn and openvpn.

https://docs.fedoraproject.org/en-US/Fedora/11/html/Security-Enhanced_Linux/sect-Security-Enhanced_Linux-Fixing_Problems-Allowing_Access_audit2allow.html

here’s a good reference about selinux management:

http://tag1consulting.com/blog/stop-disabling-selinux

Host to Guest:       Write: 6.46MBs Read: 6.36MBs

Remote to Guest:  Write: 5.00MBs Read: 4.92MBs * via remote-viewer

link: http://www.robotronic.de/guidance.html

KVM installation.

http://www.howtoforge.com/virtualization-with-kvm-on-a-centos-6.0-server

http://blog.mattbrock.co.uk/2012/02/12/virtualisation-with-kvm-and-lvm-on-centos-6-via-the-command-line/

http://vitobotta.com/setting-up-kvm-lvm-virtual-machine-host/

Using Spice with LibVirt KVM

http://wiki.centos.org/HowTos/Spice-libvirt

Viewing remote KVM Guest with usb redirection (linux mint maya 64):

Option 1:

https://launchpad.net/~bderzhavets/+archive/lib-usbredir73

Option 2:

Compile spice:

wget http://downloads.us.xiph.org/releases/celt/celt-0.5.1.3.tar.gz
  
wget http://spice-space.org/download/libcacard/libcacard-0.1.2.tar.bz2 ./configure --prefix=/usr
  
http://spice-space.org/download/gtk/spice-gtk-0.16.tar.bz2 ./configure --enable-usbredir=yes --with-python=yes
  
http://spice-space.org/download/releases/spice-protocol-0.12.2.tar.gz

install virt-viewer 5.4-3.

deb http://ubuntu.mirror.cambrium.nl/ubuntu/ raring main universe

libacl1.2.2.51-8

libattr1-1:2.4.46-8ubuntu2

libspice-client-glib-2.0-8

libspice-client-gtk-3.0-4

wget https://launchpad.net/~dnjl/+archive/build/+build/4077605/+files/virt-viewer_0.5.4-3~raring0_amd64.deb

Viewing remote KVM Guest with usb redirection using Ubuntu 13.04(live CD):

enable universe sources

sudo apt-get update
sudo apt-get install libapparmor1_2.8 libgtk-vnc-2.0 libgvnc-1.0 libspice-client-glib-2.0 libspice-client-gtk-3.0 libusbredirhost1 libusbredirparser0 libvirt0

now ubuntu 13.04 does have virt-viewer-0.5.4-1 at universe, but this version could not connect to spice type graphics.

it seems that the binary remote-viewer is not linked libspice-client-glib-2.0. That is why I’ll be using this version virt-viewer_0.5.4-3~raring0_i386.deb from https://launchpad.net/~dnjl/+archive/virtualization.

wget https://launchpad.net/~dnjl/+archive/build/+build/4077606/+files/virt-viewer_0.5.4-3~raring0_i386.deb
sudo dpkg -i virt-viewer_0.5.4-3~raring0_i386.deb

Note:

• both option has USB redirection.

• as of 02/04/13 linux mint virt-viewer from standard repo does not have usb-redirection suppport.

• virt-manager from http://virt-manager.et.redhat.com/download/sources/virt-viewer/virt-viewer-0.5.4.tar.gz has problem with glibc that why I looked for an updated version

Install kvm guest(LVM) via KVM

mkdir /var/www/html/centos
  
mount -t iso9660 -o loop CentOS-6.3-x86_64-bin-DVD1.iso /var/www/html/centos
  
virt-install \
  --name=loyalty1 \
  --cpuset=2 --ram=1024 --network bridge=br0 \
  --disk=/dev/volgrp\_kvm\_guest1/swap \
  --disk=/dev/volgrp\_kvm\_guest1/root \
  --disk=/dev/volgrp\_kvm\_guest1/usr \
  --disk=/dev/volgrp\_kvm\_guest1/opt \
  --disk=/dev/volgrp\_kvm\_guest1/var \
  --vnc --noautoconsole \
  --location http://myserver/centos

Install KVM guest(image) via ISO

virt-install \
  --name=pfsense2 \
  --cpuset=2 \
  --ram=1024 \
  --network bridge=br0 \
  --network bridge=br1 \
  --disk path=/var/lib/libvirt/images/pfsense.img \
  --vnc --noautoconsole --livecd \
  --cdrom /var/lib/libvirt/images/pfsense.iso

/var/db

config folder of openvpn, ntp, dns(resolv), snmp, syslog

/var/etc

accounts created by smbpasswd -a does not work with samba-3.5.10-125.el6.x86_64 though it was working fine on a previous version I was using, samba-3.0.33-3.38.el5_8. Both ship with centos 5.8 and centos 6.3 respectively.

increasing log level = 3 shows the following error on samba 3.5.10 which where not on 3.0.33

*ntlm_password_check: Lanman passwords NOT PERMITTED for user myuser

On the client side, Netbootdisk on my instance, it is saying that my password is invalid. But on Windows desktop I was able to log in just fine.

comparing the output of testparm -v on both version shows that samba 3.5.8 change some default settings from lower version if it were not specified on your smb.conf. Particularly the lanman auth was set to No by default which cause the above Lanman passwords NOT PERMITTED … error.

lower version: lanman auth = Yes

newer version: lanman auth = No

After entering lanman auth = Yes into smb.conf

The error changed to

*ntlm_password_check: NO LanMan password set for user myuser (and no NT password supplied)

after fiddling around with the other default settings I was still stuck with that error.Then I decided to issue again the command

smbpasswd -a myuser

and this solve my problem I was now able to login into samba 3.5.10 from Netbootdisk like before.

It seems that smbpasswd will not create a LanMan password if the lanman auth setting was left on its own and you have to reissue that smbpasswd command in case you decided to change lanman auth to Yes it later on.

Not sure if it were in the release notes I did not bother to read them maybe I should have.

1. Install Ruckus Zap tool on both PC/Laptop, installers can be found Ruckus website. Mac Windows For Linux: you have to compile from source. Open terminal and execute the following commands

   svn checkout http://zapwireless.googlecode.com/svn/trunk/ zapwireless-read-only
   # or
   git clone https://github.com/ryanchapman/zapwireless.git zapwireless-read-only
   cd zapwireless-read-only
   make && make install

2. Run zapd on both PC/Laptop,you should see something like the following.

zapd version 1.83, Copyright (C) 2004-2009 Ruckus Wireless, Inc.
      
Built Oct 13 2012 at 11:12:20
      
Zapd service started

3. To test zap run the following command on either computer. zap -sIpOf1stComputer -dIpOf2ndComputer Zap should run for a number of seconds and you should see something like the following output.

0: 192.168.1.247->192.168.1.18 403=rx 0=dr 0=oo 0=rp 403=rx in 50.1ms 94.7mbps 94.7 | 94.7 94.7 94.7 94.7 94.7 94.7 

4. If all goes well then zap tool has been properly installed. If not check your firewall if its blocking Zap tool. Also don’t forget to read Zap’s tool Manual regarding changing windows registry to enable TOS bit modification

• Provides a GUI Frontend for Ruckus amazing Zap tool

• Visualize Zap tool results using charts.

Feature:

• Generate CDF graph from zap result file.
• Save graph to image file

Requirements:

• jre6 or higher
• Ruckus zap tool

Download zperf archive: zPerf

How to use:

• Extract zperf archive.
• Under zperf/bin/ folder, there are the three files, run/use the appropriate file for your OS, zperf - linux, zperf.exe - 32bit windows, zperf64.exe, 64bit windows.
• Enter IP address of both computers running zapd
• Enter the name of the file where to save result in “Result filename”. This is optional, zPerf with create one if you did not specify.
• Pres “Run” button

Screen shots:

Main User Interface

Chart Viewer - Split View

Chart Viewer - Line Chart

Chart Viewer - Average throughput comparison between traces on a certain probability.

zPerf process and thread handling was inspired by jperf . I actually copied the source and modified it a bit for my purpose.

http://www.pro-it-education.de/software/deviceremover/

find . -type f ! -exec grep -q '@olddomain.com' {} \; -exec grep -q 'olddomain.com' {} \; -print

find . -type f | xargs egrep -Hn '@olddomain.com'

• search for top talkers using tshark

tshark -r output.cap -T fields -e ip.src "tcp.flags.syn==1 && tcp.flags.ack==0" | sort | uniq -c | sort -rn | head

• chmod multiples files mix with directory.

find /folderpath -type f -exec chmod 644 {} \;

• chmod multiples directory mix with other files.

find /folderpath -type d -exec chmod 755 {} \;

Jul 17 09:59:23 localhost openvpn[6247]: XX.xx.XX.xx:port Re-using SSL/TLS context
  
Jul 17 09:59:23 localhost openvpn[6247]: XX.xx.XX.xx:port LZO compression initialized
  
Jul 17 09:59:41 localhost openvpn[6247]: XX.xx.XX.xx:port TLS\_ERROR: BIO read tls\_read\_plaintext error: error:140890B2:SSL routines:SSL3\_GET\_CLIENT\_CERTIFICATE:no certificate returned
  
Jul 17 09:59:41 localhost openvpn[6247]: XX.xx.XX.xx:port TLS Error: TLS object -> incoming plaintext read error
  
Jul 17 09:59:41 localhost openvpn[6247]: XX.xx.XX.xx:port TLS Error: TLS handshake failed

a52:

./configure --enable-shared=PKGS

faad2:

autoreconf -vif
./configure

faac:

./bootstrap
./configure --without-mp4v2 --prefix=/usr

lamemp3:

./configure --prefix=/usr

yasm:

.configure && make && make install

x264:

git clone git://git.videolan.org/x264.git
./configure --enable-shared --prefix=/usr
make fprofiled
make install

xvidcore:

.configure && make && make install

ffmpeg:

svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
cd ffmpeg
./configure --enable-gpl  --enable-postproc --enable-nonfree --enable-postproc \
--enable-avfilter --enable-pthreads --enable-libxvid \
--enable-libx264 --enable-libmp3lame --enable-libfaac --disable-ffserver --disable-ffplay

zlib-devel, libjpeg-devel, freetype-devel, giflib-devel

wget http://www.swftools.org/swftools-0.9.2.tar.gz<br /> tar xvzf http://www.swftools.org/swftools-0.9.2.tar.gz<br /> cd swftools-0.9.2

Download the latest tarzgzipped version fo xpdf and put it on the swftools lib/pdf folder

cd lib/pdf/<br /> wget ftp://ftp.foolabs.com/pub/xpdf/xpdf-3.03.tar.gz<br /> ./configure<br /> make

Before running make install

cd swfs<br /> vi Makefile

remove the two “rm” lines with -o option as this are invalid

make install

References:

http://elrepo.org/bugs/view.php?id=215

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Installation_Guide/sect-Preparing_an_initial_RAM_disk_update-ppc.html

-e '8i\# PC-Check 7\.03 with net support'

special characters like # and . should have a \ suffix.

# Insert a blank line on line number

-e '8i\\`echo -e '\n\r'`'

# to append at end of the file: sed command: $a

-e '\$a#HQ to local DVR'

# search and replace, ^ - match all words beginning the word specified and replace the matching word,

-e 's/^DNAT/#DNAT/g'

# search and replace whole line: .* - match all lines containing the word being search and replace the whole line.

-e 's/.*DNAT.*/#DNAT/g'

tar -cv folder | gpg -e -r recipientGpgKey -o output.tar.gpg

to decompress the above file:(prepare recipientGpgKey passphrase )

gpg --output output.tar --decrypt output.tar.gpg

you must specify –secret-keyring pathtokeyring if secret key is not available on the machine

View both keys with gpg --list-keys

$ gpg --list-keys
  
pub 1024D/AAAAAAAA 2008-03-07
  
uid test fwknop <[email protected]>
  
sub 2048g/DDDDDDDD 2008-03-07

Export both keys from remote and local terminals.

gpg -a --export AAAAAAAA > remote.asc
  
gpg -a --export BBBBBBBB > local.asc

where AAAAAAAA is the remote key id and BBBBBBBB is the local key id.

securely transfer remote.asc to local terminal.

securely transfer local.asc to remote terminal.

import and signed both keys, you will need to enter the correct passphrase when signing both keys.

on local terminal

$ gpg --import remote.asc
$ gpg --edit-key AAAAAAAA
Command> sign
Command> save

on remote terminal

$ gpg --import local.asc
$ gpg --edit-key BBBBBBBB
Command> sign
Command> save

Generate gpg keys on both remote and local terminal :

`gpg --gen-key`
  
Please select what kind of key you want:
  
Select (1) DSA and Elgamal (default)

What keysize do you want? (2048)
  
Choose default 2048(just press enter)

Key is valid for? (0)
  
press enter key does not expire

Is this correct? (y/N)
  
press y

Real name:
  
enter key name e.g: term-Gpg

Email address:
  
enter email...

Comment:
  
optional press enter if none

Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit?
  
press O and enter

You need a Passphrase to protect your secret key.
  
enter your ultra duper secure passpharse.

generate some activity on the terminal,move your mouse or search for a file. while it generates random bytes.

# finally if all goes well, the ff will be shown.

public and secret key created and signed.

gpg: checking the trustdb
  
gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
  
gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
  
pub 1024D/YYYYXXXX 2011-06-03
        
Key fingerprint = 1111 2222 3333 4444 5555 6666 7777 8888 9999 aaaa
  
uid Term7-Gpg <[email protected]>
  
sub 2048g/XXXXYYY 2011-06-03

wget http://trac.red5.org/downloads/1_0/red5-1.0.0-RC1.tar.gz
tar xvzf red5-1.0.0-RC1.tar.gz
cd red5-1.0.0/webapps/
mkdir oflaDemo
cd oflaDemo
wget http://red5.googlecode.com/svn-history/r3990/snapshots/oflaDemo-r3989-java6.war
unzip oflaDemo-r3989-java6.war
cd ../..
./red5.sh

rmmod pl2303<br /> rmmod usb_storage<br />

then reinsert huawei modem again

Read all SMS in text mode:
  
AT+CMGF=1 (set TEXT MODE)
  
AT+CMGL="ALL"

Read single sms in text mode:
  
AT+CMGF=1 # (set TEXT MODE)
  
AT+CMGR=1 # (location index)

Delete single sms:
  
AT+CMGD=1 # (location index)

Sending SMS in text mode:
  
AT+CMGF=1 (set TEXT MODE)
  
AT+CMGS="0912xxxyyyy"
  
> test message
  
Press Ctrl+z
  
Press Enter

Read Sim Number:
  
AT+CPBS="ON"
  
AT+CPBR=1
  
+CPBR: 1,"+63948xxxyyyy",145,"";

cat >/etc/apache/conf.d <<EOL
Alias /projects /var/www/projects</p>
<p><Location /projects><br />
    Order allow,deny<br />
    Allow from all<br />
</Location></p>
<p><Directory /var/www/projects><br />
Options +ExecCGI<br />
AddHandler cgi-script .cgi .pl<br />
</Directory><br />
EOL

those script requires the ff. perl module

perl-HTML-Entities-Numbered (centos 5.6 base repo)

perl-Log-Log4perl (rpmforge)

perl-CGI

UserParameter=system.smartd[*],sudo smartctl -A $1| grep $2| tail -1| cut -c 88-|cut -f1 -d" "

zabbix ALL=NOPASSWD: /usr/sbin/smartctl

  from : PSENSORS=/usr/bin/sensors
  to: PSENSORS=/usr/local/bin/sensors

  modinfo it87
  
  modinfo coretemp

optional

1. add the ff. to your zabbix_agent.conf

   UserParameter=sensors[\*],/usr/local/bin/sensors | grep "$1" | head -$2 | tail -1 | awk "{print $"$3"}" | sed 's/[-!@#\$%^&\*()°+a-zA-Z]//g'

2. add the ff to your sensors3.conf under the chip it87 entry

label fan1 “CPU Fan”

sudo add-apt-repository ppa:ubuntu-mozilla-daily/ppa

sudo apt-get update

sudo apt-get install thunderbird

sudo apt-get install firefox

http://elrepo.org

  
groupadd nut;adduser -g nut ups
  
yum install gd-devel libusb-devel
  
./configure --with-user=ups --with-group=nut --with-usb --with-cgi --prefix=/ups --localstatedir=/ups/var --with-pidpath=/ups/var/state/ups --with-statepath=/ups/var/state/ups --enable-static

make
  
make install
  
cd /ups;mkdir -p /ups/var/state/ups;chmod 0770 /ups/var/state/ups;chown root:nut /ups/var/state/ups
  
copy libz.so to /ups/lib
  
copy libz.a to /ups/lib
  
chmod 0660 /dev/ttyS0;chown root:nut /dev/ttyS0

cat >/etc/udev/rules.d/99-my.rules <<EOL
SUBSYSTEM=="tty", KERNEL=="ttyS0", OWNER="root", GROUP="nut"
EOL

For APC UPS BR550I or BR550GI use the ff.

vi /etc/udev/rules.d/52-nut-usbups.rules
# This file is generated and installed by the Network UPS Tools package.
ACTION!="add", GOTO="nut-usbups_rules_end"
SUBSYSTEM=="usb_device", GOTO="nut-usbups_rules_real"
SUBSYSTEM=="usb", GOTO="nut-usbups_rules_real"
BUS!="usb", GOTO="nut-usbups_rules_end"
LABEL="nut-usbups_rules_real"
# APC
#  various models  - usbhid-ups
ATTR{idVendor}=="051d", ATTR{idProduct}=="0002", MODE="664", GROUP="nut"
LABEL="nut-usbups_rules_end"

Prepare upsd.conf upsmon.conf ups.conf upssched.conf upsd.users

chown root:nut *.conf upsd.users
  
chmod 0640 *.conf upsd.users
  

add the following to /etc/init.d/halt

LD_LIBRARY_PATH=/ups/lib:$LD_LIBRARY_PATH
export LD_LIBRARY_PATH
if(test -f /etc/killpower)
then
        echo "***************SHUTTING DOWN UPS*************"
        sleep 1
        echo "5"
        sleep 1
        echo "4"
        sleep 1
        echo "3"
        sleep 1
        echo "2"
        sleep 1
        echo "1"
        sleep 1
        echo "bye!"
        sleep 1
        /ups/bin/upsdrvctl -u root shutdown
        echo "UPS should be off by now"
        sleep 20
fi
  

Add upsd upsmon startup scripts to /etc/rc.local

  
cat >/ups/etc/alerthandler <<EOL
#! /bin/sh
case $1 in
        onbattwarn)
                echo "The UPS has been on battery for awhile"
                /ups/sbin/upsmon -c fsd
        ;;
        ups-back-on-power)
                /bin/rm -f /ups/var/state/ups-on-battery
        ;;
        *)
                logger -t alerthandler "Unrecognized command: $1"
        ;;
        esac
EOL

chmod 0760 /ups/etc/alerthandler;chown root:nut /ups/etc/alerthandler
  

TEST

$ fuser /dev/ttyS0 # should produce no output
  
$ upsdrvctl start
  
# Output:
  
Network UPS Tools - UPS driver controller 2.4.3
  
Network UPS Tools - Megatec protocol driver 1.6 (2.4.3)
  
Megatec protocol UPS detected.
  
$ upsd
  
# Output:
  
Network UPS Tools upsd 2.4.3
  
listening on 127.0.0.1 port 3493
  
listening on 192.168.1.145 port 3493
  
Connected to UPS [myups]: megatec-myups
  
  
$ upsc myups@localhost
  
# Output:
  
battery.charge: 100.0
  
...
  
ups.type: standby

download: epel-release-* ; ius-release-*

to update PHP:

remove rhel packages:

  
rpm -qa | grep php

yum shell

remove php-gd php-cli php-odbc php-mbstring php-pdo php php-xml php-common php-ldap php-mysql php-imap

install php52-gd php52-cli php52-odbc php52-mbstring php52-pdo php52 php52-xml php52-common php52-ldap php52-mysql php52-imap php52-mcrypt

transaction solve

transaction run

[OpenStreetMap][1]

most annoying interfacing i ever done, panay debugging ng serial port.

Tech specs:

PIC16F877a 20Mhz

Demo using my Classic Army SLR105 A1 w/ Guarder SP120 spring

uses PORTB interrupts for BB detection.

Nikko V2.0. tech specs:

PIC16F877a 20Mhz

Mission in life: to follow wall.