SPI-POTX2

Features

• Dual Digital potentiometer
  • MCP4231 Digital Pot
  • 7-bit: 128 Resistors (129 Steps)
  • Zero Scale to Full Scale Wiper operation
  • 10K
    • Other resistances optional: 5K, 50K, 100K
  • Power on reset to half wiper value
  • SPI Interface
    • SPI Serial Interface (10 MHz, modes 0,0 & 1,1)
    • High-Speed Read/Writes to wiper register
    • 10 MHz (max SPI speed)
• 2.7V to 5.5V
• Daisy-chain SPI connector
• 49x49mm form factor
• (4) #4-40 mounting holes
• Daisy-chain connectors

Connectors

J1, J3 - SPI connector

1. MISO
2. +V
3. SCK
4. MOSI
5. SS
6. GND

J2 - SPI Connector

• Matches Arduino SPI connector pinout

1. MISO
2. +V
3. SCK
4. MOSI
5. SS
6. GND

POT0, POT1

1. GND
2. B SIDE
3. WIPER
4. A SIDE
5. +V

Test Software

• SPI-POT-X2 GitHub Arduino Example Code

Assembly Sheet

• SPI-POTX2 Assembly Sheet