MXP Pmod Adapter for NI myRIO/roboRIO

Overview

With the Pmod Adapter for myRIO, you can now connect your myRIO to the expansive selection of peripheral modules offered by Digilent.

Features include:

  • Uses the myRIO Expansion Port (MXP) connector
  • Standard 34-pin female breakout
  • Two Pmod connectors designed for use with UART and SPI communication protocols
  • A standard 8-pin male I2C connector
  • Optional external power supply input (supports 4.5V-20V)

Powering the Adapter

The Pmod connectors on the Pmod Adapter for NI myRIO can be powered by either the myRIO or by an external power source installed in J3. You can choose which power source to use with the jumper JP1. Selecting +3V3 will power the Pmod connectors with the 3.3V source supplied by the myRIO. Selecting REG will power the connectors using the external power source regulated to 3.3V.

Pin Connections

Pmod A (JA) : Pmod Connector A (SPI)

Pin# myRIO Pin Name Function
1 DIO13 IO
2 DIO7 IO/SPI-MOSI
3 DIO6 IO/SPI-MISO
4 DIO5 IO/SPI-CLK
5/11 GND GND
6/12 3V3 3V3
7 DIO0 IO
8 DIO1 IO
9 DIO2 IO
10 DIO3 IO

Pmod B (JB) : Pmod Connector B (UART)

Pin# myRIO Pin Name Function
1 DIO8 IO/PWM0
2 UART-TX UART-TX
3 UART-RX UART-RX
4 DIO9 IO/PWM1
5/11 GND GND
6/12 3V3 3V3
7 DIO10 IO/PWM2
8 DIO4 IO
9 DIO11 IO/ENC-A
10 DIO12 IO/ENC-B

I2C (J4) : I2C Connector (I2C)

Pin# myRIO Pin Name Function
1 DIO14/SCL IO/I2C-SCL
2 DIO15/SDA IO/I2C-SDA
3/7 GND GND
4/8 3V3 3V3
5 DIO14/SCL IO/I2C-SCL
6 DIO15/SDA IO/I2C-SDA

AO0 (J5) : AO0 Connector

Pin# myRIO Pin Name Function
1 AO0 Analog Output 0
2 GND GND

AO1 (J6) : AO1 Connector

Pin# myRIO Pin Name Function
1 AO1 Analog Output 1
2 GND GND

Using the Adapter with myRIO

Please visit the myRIO Community Website for example code and project ideas.