'Ultrasonic 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 (Analog)"

proximity-hcsr04-analog.png

Fritzing diagram: proximity-hcsr04-analog.fzz

 

Run this example from the command line with:

node eg/proximity-hcsr04-analog.js
const { Board, Proximity } = require("johnny-five");
const board = new Board();

board.on("ready", () => {
  const proximity = new Proximity({
    controller: "HCSR04",
    pin: "A0"
  });

  proximity.on("change", () => {
    const {centimeters, inches} = proximity;
    console.log("Proximity: ");
    console.log("  cm  : ", centimeters);
    console.log("  in  : ", inches);
    console.log("-----------------");
  });
});

 

Component Classes in this example:

Hi! The Johnny-Five community is building new projects every day. We made this newsletter to tell you about what's new, what's good, and what's next for Open Source robotics. Join us in exploring what we can make together.

Fork me on GitHub