Example Arduino Sketch for MCP4261 Potentiometer Shield?

swbooking

Just received my pot shield and was wondering if there is an example Arduino sketch available to get me up and running quickly?

Thanks!

Will Dickson

@swbooking

We have an Arduino library for the MCP4261 Potentiometer Shield available in the iorodeo_arduino_libs repository on bitbucket https://bitbucket.org/iorodeo/iorodeo_arduino_libs/src See the mcp4261 sub-directory. Examples can be found in mcp4261/Examples.

Here is a short example showing how to set the wiper positions of the potentiometers using the mcp4261 library.

#include <SPI.h>
#include "mcp4261.h"

// Simple example demonstrating how to use the MCP4261 library with 
// the MCP4261 Arduino Uno shield

const int POT_0_CS = 5;
const int POT_1_CS = 6;
const int LOOP_DELAY = 200;
MCP4261 pot0 = MCP4261(POT_0_CS);
MCP4261 pot1 = MCP4261(POT_1_CS);

void setup() {

    // Setup SPI communications
    SPI.setDataMode(SPI_MODE0);
    SPI.setBitOrder(MSBFIRST);
    SPI.setClockDivider(SPI_CLOCK_DIV8);
    SPI.begin();

    // Initialize potentiometers
    pot0.initialize();
    pot1.initialize();
}

void loop() {
    static int cnt=0;

    pot0.setWiper0(cnt);
    pot0.setWiper1(256-cnt);

    pot1.setWiper0(cnt);
    pot1.setWiper1(256-cnt);

    cnt += 1;
    if (cnt > 256) {
        cnt = 0;
    }
    delay(LOOP_DELAY);
}

The KiCad Design files for the Arduino Uno shield can be found here https://bitbucket.org/iorodeo/mcp4261_shield/src

An image of the schematic is given below
alt text

swbooking

Awesome, thanks Will! got me up and running super quickly!