Proximity - HC-SR04

Basic ping Proximity example for any of the PING_PULSE_IN components (eg. HCSR04 or Parallax's Ultrasonic Ping). PingFirmata must be loaded onto Arduino-compatible boards to enable this component.

Breadboard for "Proximity - HC-SR04"


Fritzing diagram: docs/breadboard/proximity-hcsr04.fzz


Run with:

node eg/proximity-hcsr04.js
var five = require("johnny-five");
var board = new five.Board();

board.on("ready", function() {
  var proximity = new five.Proximity({
    controller: "HCSR04",
    pin: 7

  proximity.on("data", function() {
    console.log( + "cm", + "in");

  proximity.on("change", function() {
    console.log("The obstruction has moved.");



Copyright (c) 2012, 2013, 2014 Rick Waldron Licensed under the MIT license. Copyright (c) 2014, 2015 The Johnny-Five Contributors Licensed under the MIT license.