Midi Tool

kicad design files for a general purpose midi dev board based on Arduino MKRZero

• samdg21 arm cortex m0 microcontroller
• DIN-5 midi input and output
• st7735 display (128x128 16bit)
• PCF8523T realtime clock RTC
• socket for micro-SD card
• status LED
• SWD connection for programming
• PJ-320A connector for 2 foot-switches
• 5V POWER via USB
• 3V3 regulator
• 4-pin socket for neopixel strip
• Status LED

Firmware

• samd21g-midi-tool-software

Kicad plugins

• JLCPCB
• Freerouting

Arduino libraries

• PCF8523
• Adafruit-ST7735-Library
• arduino_midi_library

sources / credits:

• schematics and pcb design based on MKRZERO Arduino
• 3d models:
  • PJ320A PJ320D 3.5mm JACK
  • SMD CR1220 Battery case
• footprints
  • PJ-320A

images