Using a MUXSHIELD2 Expander as a Virtual Board. Displays value of potentiometers in console graph. (npm install barcli)

Breadboard for "Expander - MUXSHIELD2, Analog Sensors"


Fritzing diagram: expander-MUXSHIELD2-analog-read.fzz


Run this example from the command line with:

node eg/expander-MUXSHIELD2-analog-read.js
const Barcli = require("barcli");
const { Board, Expander, Sensor } = require("johnny-five");
const board = new Board({
  repl: false,
  debug: false

board.on("ready", () => {
  const range = [0, 1023];
  const bars = {
    a: new Barcli({ label: "IO1-15", range }),
    b: new Barcli({ label: "IO2-15", range }),

  const virtual = new Board.Virtual(
    new Expander("MUXSHIELD2")

  const a = new Sensor({
    pin: "IO1-15",
    board: virtual

  a.on("change", () => {

  const b = new Sensor({
    pin: "IO2-15",
    board: virtual

  b.on("change", () => {


Component Classes in this example:

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