Intended for use with the Source Audio C4 Synth but will maybe work with other One Series pedals.

• Adafruit Trinket M0
• TM1637 7-segment display
• 2x momentary buttons
• 1590A case (or similar)

• https://github.com/avishorp/TM1637
• https://github.com/gdsports/USB_Host_Library_SAMD

• 0 - Up Button
• 1 - Down Button
• 2 - LCD I/O
• 3 - LCD Clock

Prompted by a discussion at The Gear Page. Thanks to user morrissey007 for the motivation. :)

Button 0 press will increment preset (default/startup = 0), Button 1 will decrement. Pressing both buttons simultaneously will display the channel (set to 0 in code). Uncomment L114 in order to allow this to be changed. Don't know if this is useful -- I may have the combined press do something different in the future.