All-In-One Module PCB v2

This PCB is designed for building the Zynthian’s All-In-One module and fits perfectly inside the official cases. It fits perfectly inside the official cases and integrates a MCP23017 GPIO expander, needed for connecting the controller modules without exhausting the RBPi GPIO ports. Also includes 3 optocoupler circuits for the 3 standard ports: MIDI-IN/OUT/THRU.

This is the Bill Of Materials for building this PCB:

- 1 x MCP23017 (I2C GPIO expander IC)
- 1 x 40 row-pin male connector
- 7 x JST 4-pin male connector
- 3 x H11L1 (optocoupler IC)
- 4 x 100 nF ceramic capacitor
- 3 x 1K resistor 1/4W
- 3 x 470 resistor 1/4W
- 2 x 4K7 resistor 1/4W
- 1 x 100 resistor 1/4W
- 1 x 10K resistor 1/4W
- 3 x 1N4148 diode
- 1 x 1N5819 diode