Builtin Apps:

• About: show netmask separately, make labels focusable
• AppStore: update BadgeHub.eu URL
• HowTo: new onboarding app with auto-start handling to explain controls
• Settings: add sub-groups of setings as separate apps, including WiFi app
• Settings: add Hotspot sub-group (SSID, password, security)
• Settings: add WebServer sub-group (autostart, port, password)
• Launcher: ignore launchers and MPOS settings (except WiFi)

Frameworks:

• Audio streams: WAV playback/recording improvements (duration/progress, hardware volume control)
• AudioManager: registry/session model, multi-speaker/mic routing, ADC-based mic (adc_mic)
• DownloadManager: explicit certificate handling
• InputManager: pointer detection helpers and board registrations
• SensorManager: refactor to IMU drivers with magnetometer support and desktop IIO fallback
• SharedPreferences: fix None handling
• WebServer: new framework with Linux/macOS fixes and no background thread
• WifiService: hotspot support, IP address helpers, simplified connect/auto-connect
• Websocket library: renamed to uaiowebsocket to avoid conflicts

OS:

• ESP32 boards: bundle WebREPL (not started by default) to offer remote MicroPython shell over the network, accessible through webbrowser - see video demo
• New board support: LilyGo T-Display-S3 (physical and emulated by QEMU)
• New board support: LilyGo T-Watch S3 Plus
• New board support: M5Stack Fire
• New board support: ODroid Go
• New board support: unPhone 9
• Fri3d 2024/2026 updates: display reset support using CH32 microcontroller, communicator/expander drivers
• ADC microphone C module and tests
• Build system: switch to static builds for desktop systems to bundle LIBC and fix LIBC version issue
• Build system: add linux-arm64 and macos-intel GitHub workflows to support more precompiled binaries
• Add FreeRTOS module for low-level ESP32 functions
• Add --optimize-size build flag to reduce internal flash storage usage

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As the API isn't frozen yet, if an app has an issue after the upgrade, then just update it using the AppStore

Autogenerated release notes

• Use a dot-whitelist by @jedie in #36
• Support ODROID-GO by @jedie in #35
• Add initial support for M5Stack-Fire board by @ancebfer in #32
• Clear battery cache in ShowBattery app by @jedie in #37
• Add simple calendar application by @pavelmachek in #38
• Enhance ShowBattery App by @jedie in #39
• Updates for ODROID-GO by @jedie in #40
• Update board/m5stack_fire.py by @jedie in #43
• WIP: New app: "Scan Bluetooth" by @jedie in #58
• Add MPU6886 driver (tested with M5Stack FIRE) by @jedie in #56
• Clean up existing install/symlink before extracting .mpk by @bitcoin3us in #55
• Fix EEXIST errors in zipfile.py during extraction by @bitcoin3us in #54
• Odroid-Go: Unmute+Mute buzzer before/after Playback by @jedie in #52
• imu: Allow access to iio on Linux by @pavelmachek in #45
• waveshare_esp32_s3_touch_lcd_2: Fix soft reset by @jedie in #68
• Fix MPU6886 X-Axis by @jedie in #67
• columns: simple falling-blocks game by @pavelmachek in #63
• weather: start simple weather application by @pavelmachek in #62
• compass: Add an application for magnetometer / accelerometer debugging by @pavelmachek in #61
• magn: Start magnetometer support by @pavelmachek in #60
• Enhance ScanBluetooth app by @jedie in #72
• scan_bluetooth: Display "last seen in sec." and fix timeout by @jedie in #73
• cellular: simple cellular-network example by @pavelmachek in #80
• floodit: simple game by @pavelmachek in #79
• navstar: Simple navigation application by @pavelmachek in #77
• gyro: add gyroscope test/display application by @pavelmachek in #76
• weather: add forecasts, switch to download manager by @pavelmachek in #75
• Add support for unPhone 9 by @jedie in #74
• add a driver for the 2024 and 2026 communicator by @bertouttier in #82
• add fri3d badge 2026 expander driver by @bertouttier in #81

New Contributors

• @jedie made their first contribution in #36
• @ancebfer made their first contribution in #32
• @bitcoin3us made their first contribution in #55
• @bertouttier made their first contribution in #82

Full diff: 0.8.0...0.9.0

Builtin Apps:

• About: use logger framework
• AppStore: mark BadgeHub backend as 'beta'
• Launcher: improve layout on different screen width sizes
• OSUpdate: remove 'force update' checkbox not in favor of varying button labels

Frameworks:

• SDCard: add support for SDIO/SD/MMC mode
• CameraManager and CameraActivity: work fully camera-agnostic

OS:

• Add board support: Makerfabs MaTouch ESP32-S3 SPI IPS 2.8' with Camera OV3660
• Scale MicroPythonOS boot logo down if necessary
• Don't show battery icon if battery is not supported
• Move logging.py to subdirectory

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com

Builtin Apps:

• Update icons for AppStore, Settings, and Wifi apps

Frameworks:

• Fix issue with multiple DownloadManager.download_url's on ESP32 due to SSL session sharing/corruption

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As many frameworks changed, it's recommended to also update your apps using the AppStore, for compatibility

Builtin Apps:

• Redesign all app icons from scratch for a more consistent style
• About app: show MicroPythonOS logo at the top
• AppStore app: fix BadgeHub backend handling
• OSUpdate app: eliminate requests library
• Settings app: make 'Cancel' button more 'ghost-y' to discourage accidental misclicks

Frameworks:

• Harmonize frameworks to use same coding patterns
• Rename AudioFlinger to AudioManager framework
• Rename PackageManager to AppManager framework
• Add new AppearanceManager framework
• Add new BatteryManager framework
• Add new DeviceInfo framework
• Add new DisplayMetrics framework
• Add new InputManager framework
• Add new TimeZone framework
• Add new VersionInfo framework
• ActivityNavigator: support pre-instantiated activities so an activity can close a child activity
• SensorManager: add support for LSM6DSO

OS:

• Show new MicroPythonOS logo at boot
• Replace all compiled binary .mpy files by source copies for transparency (they get compiled during the build, so performance won't suffer)
• Remove dependency on micropython-esp32-ota library
• Remove dependency on traceback library
• Additional board support: Fri3d Camp 2026 (untested)

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As many frameworks changed, it's recommended to also update your apps using the AppStore, for compatibility

Builtin Apps:

• About app: make more beautiful
• AppStore app: add Settings screen to choose backend
• WiFi app: check 'hidden' in EditNetwork
• Wifi app: add support for scanning wifi QR codes to 'Add Network'

Frameworks:

• Camera and QR scanning: fix aspect ratio for higher resolutions
• Create new SettingsActivity and SettingActivity framework so apps can easily add settings screens with just a few lines of code
• Create CameraManager framework so apps can easily check whether there is a camera available etc.
• Simplify and unify most frameworks to make developing apps easier (apps may require an update)

OS:

• Improve robustness by catching unhandled app exceptions
• Improve robustness with custom exception that does not deinit() the TaskHandler
• Improve robustness by disabling default TaskHandler exception hook that throws uncaught exception
• Don't rate-limit update_ui_threadsafe_if_foreground (no need)
• Make 'Power Off' button on desktop exit completely

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com

• Fri3d Camp 2024 Board: add I2S microphone as found on the communicator add-on
• API: add TaskManager that wraps asyncio
• API: add DownloadManager that uses TaskManager
• API: use aiorepl to eliminate another thread
• AudioFlinger API: add support for I2S microphone recording to WAV
• AudioFlinger API: optimize WAV volume scaling for speed and immediately set volume
• Rearrange automated testing facilities
• About app: add mpy format info
• AppStore app: eliminate all threads by using TaskManager
• AppStore app: add experimental support for BadgeHub backend (not enabled)
• MusicPlayer app: faster volume slider action
• OSUpdate app: show download speed
• SoundRecorder app: created to test AudioFlinger's new recording feature!
• WiFi app: new 'Add network' functionality for out-of-range networks
• WiFi app: add support for hidden networks (fixes #14)
• WiFi app: add 'Forget' button to delete networks

• Fri3d Camp 2024 Board: add startup light and sound
• Fri3d Camp 2024 Board: workaround ADC2+WiFi conflict by temporarily disable WiFi to measure battery level
• Fri3d Camp 2024 Board: improve battery monitor calibration to fix 0.1V delta
• Fri3d Camp 2024 Board: add WSEN-ISDS 6-Axis Inertial Measurement Unit (IMU) support (including temperature)
• API: improve and cleanup animations
• API: SharedPreferences: add erase_all() function
• API: add defaults handling to SharedPreferences and only save non-defaults
• API: restore sys.path after starting app
• API: add AudioFlinger for audio playback (i2s DAC and buzzer)
• API: add LightsManager for multicolor LEDs
• API: add SensorManager for generic handling of IMUs and temperature sensors
• UI: back swipe gesture closes topmenu when open (thanks, @Mark19000 !)
• About app: add free, used and total storage space info
• AppStore app: remove unnecessary scrollbar over publisher's name
• Camera app: massive overhaul!
  • Lots of settings (basic, advanced, expert)
  • Enable decoding of high density QR codes (like Nostr Wallet Connect) from small sizes (like mobile phone screens)
  • Even dotted, logo-ridden and scratched pictures of QR codes are now decoded properly!
• ImageView app: add delete functionality
• ImageView app: add support for grayscale images
• OSUpdate app: pause download when wifi is lost, resume when reconnected
• Settings app: fix un-checking of radio button
• Settings app: add IMU calibration
• Wifi app: simplify on-screen keyboard handling, fix cancel button handling

• ESP32: one build to rule them all; instead of 2 builds per supported board, there is now one single build that identifies and initializes the board at runtime!
• MposKeyboard: fix q, Q, 1 and ~ button unclickable bug
• MposKeyboard: increase font size from 16 to 20
• MposKeyboard: use checkbox instead of newline symbol for 'OK, Ready'
• MposKeyboard: bigger space bar
• OSUpdate app: simplify by using ConnectivityManager
• OSUpdate app: adapt to new device IDs
• ImageView app: improve error handling
• Settings app: tweak font size
• Settings app: add 'format internal data partition' option
• Settings app: fix checkbox handling with buttons
• UI: pass clicks on invisible 'gesture swipe start' are to underlying widget
• UI: only show back and down gesture icons on swipe, not on tap
• UI: double size of back and down swipe gesture starting areas for easier gestures
• UI: increase navigation gesture sensitivity
• UI: prevent visual glitches in animations
• API: add facilities for instrumentation (screengrabs, mouse clicks)
• API: move WifiService to mpos.net
• API: remove fonts to reduce size
• API: replace font_montserrat_28 with font_montserrat_28_compressed to reduce size
• API: improve SD card error handling
• WifiService: connect to strongest networks first

• Add custom MposKeyboard with more than 50% bigger buttons, great for tiny touch screens!
• Apply theme changes (dark mode, color) immediately after saving
• About app: add a bit more info
• Camera app: fix one-in-two "camera image stays blank" issue
• OSUpdate app: enable scrolling with joystick/arrow keys
• OSUpdate app: Major rework with improved reliability and user experience
  • add WiFi monitoring - shows "Waiting for WiFi..." instead of error when no connection
  • add automatic pause/resume on WiFi loss during downloads using HTTP Range headers
  • add user-friendly error messages with specific guidance for each error type
  • add "Check Again" button for easy retry after errors
  • add state machine for better app state management
  • add comprehensive test coverage (42 tests: 31 unit tests + 11 graphical tests)
  • refactor code into testable components (NetworkMonitor, UpdateChecker, UpdateDownloader)
  • improve download error recovery with progress preservation
  • improve timeout handling (5-minute wait for WiFi with clear messaging)
• Tests: add test infrastructure with mock classes for network, HTTP, and partition operations
• Tests: add graphical test helper utilities for UI verification and screenshot capture
• API: change "display" to mpos.ui.main_display
• API: change mpos.ui.th to mpos.ui.task_handler
• waveshare-esp32-s3-touch-lcd-2: power off camera at boot to conserve power
• waveshare-esp32-s3-touch-lcd-2: increase touch screen input clock frequency from 100kHz to 400kHz

• Settings app: add 'Auto Start App' setting
• Tweak gesture navigation to trigger back and top menu more easily
• Rollback OTA update if launcher fails to start
• Rename 'Home' to 'Launch' in top menu drawer
• Fri3d-2024 Badge: use same SPI freq as Waveshare 2 inch for uniformity
• ESP32: reduce drawing frequency by increasing task_handler duration from 1ms to 5ms
• Rework MicroPython WebSocketApp websocket-client library using uasyncio
• Rework MicroPython python-nostr library using uasyncio
• Update aiohttp_ws library to 0.0.6
• Add fragmentation support for aiohttp_ws library

Known issues:

• Camera app: one in two times, camera image stays blank (workaround: close and re-open it)
• OSUpdate app: long changelog can't be scrolled without touchscreen (workaround: read the changelog here)
• Fri3d-2024 Badge: joystick arrow up ticks a radio button (workaround: un-tick the radio button)