Trim Controller

Idea for vendor to make the boards https://www.pcbway.com/

Trim system controller is based on this board:

https://www.rugged-circuits.com/microcontroller-boards/ruggeduino-smalls-tcrmx

Which has the same pinout of this board:

Power supply circuit:

We also need the following:

• (1) DRV8871 Motor controller
• (1) digital pot MCP4651 (not MCP[1|2]XX because those are SPI which needs more pins)

Inputs are:

ADC

1. ADC for linear resistor 1
2. ADC for linear resistor 2
3. ADC 4 for i2c
4. ADC 5 for i2c

Digital

1. Encoder A
2. Encoder B
3. Trim up (both up/down goto neutral)
4. Trim down (both up/down goto neutral)
5. Trim up (both up/down goto neutral)
6. Trim down (both up/down goto neutral)
7. Motor IN 1
8. motor IN 2
9. motor driver A
10. motor driver B
11. transistor for sinking current to discrete input.