npm install johnny-five
- Plug in Logitech Gamepad to linux laptop
- plug in tinyduino with lightring shield.
- run
sudo node move.js
- move the gamepad to see lights move.
Last active
January 12, 2019 01:29
-
-
Save creationix/5938578 to your computer and use it in GitHub Desktop.
A sample program showing how to control a tiny arduino using a gamepad, linux, node.js, and firmata.
https://www.youtube.com/watch?v=XjCsDosGghA
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
var FS = require('fs'); | |
var EventEmitter = require('events').EventEmitter; | |
function parse(buffer) { | |
var event = { | |
time: buffer.readUInt32LE(0), | |
value: buffer.readInt16LE(4), | |
number: buffer[7], | |
} | |
var type = buffer[6]; | |
if (type & 0x80) event.init = true; | |
if (type & 0x01) event.type = "button"; | |
if (type & 0x02) event.type = "axis"; | |
return event; | |
} | |
// Expose as a nice JavaScript API | |
function Joystick(id) { | |
this.wrap("onOpen"); | |
this.wrap("onRead"); | |
this.id = id; | |
this.buffer = new Buffer(8); | |
FS.open("/dev/input/js" + id, "r", this.onOpen); | |
} | |
Joystick.prototype = Object.create(EventEmitter.prototype, { | |
constructor: {value: Joystick} | |
}); | |
// Register a bound version of a method and route errors | |
Joystick.prototype.wrap = function (name) { | |
var self = this; | |
var fn = this[name]; | |
this[name] = function (err) { | |
if (err) return self.emit("error", err); | |
return fn.apply(self, Array.prototype.slice.call(arguments, 1)); | |
}; | |
}; | |
Joystick.prototype.onOpen = function (fd) { | |
this.fd = fd; | |
this.startRead(); | |
}; | |
Joystick.prototype.startRead = function () { | |
FS.read(this.fd, this.buffer, 0, 8, null, this.onRead); | |
}; | |
Joystick.prototype.onRead = function (bytesRead) { | |
var event = parse(this.buffer); | |
event.id = this.id; | |
this.emit(event.type, event); | |
if (this.fd) this.startRead(); | |
}; | |
Joystick.prototype.close = function (callback) { | |
FS.close(this.fd, callback); | |
this.fd = undefined; | |
}; | |
module.exports = Joystick; | |
//////////////////////////////////////////////////////////////////////////////// | |
// Sample usage | |
//var js = new Joystick(0); | |
//js.on('button', console.log); | |
//js.on('axis', console.log); | |
// Close after 5 seconds | |
//setTimeout(function () { | |
// js.close(); | |
//}, 5000); | |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
var five = require('johnny-five'); | |
var Joystick = require('./joystick.js'); | |
var js = new Joystick(0); | |
var board = new five.Board(); | |
var firmata; | |
var HIGH, LOW, OUTPUT, INPUT, digitalWrite, pinMode; | |
board.on("ready", function () { | |
firmata = board.firmata; | |
HIGH = firmata.HIGH; | |
LOW = firmata.LOW; | |
OUTPUT = firmata.MODES.OUTPUT; | |
INPUT = firmata.MODES.INPUT; | |
digitalWrite = firmata.digitalWrite.bind(firmata); | |
pinMode = firmata.pinMode.bind(firmata); | |
console.log("move axis 0 on joystick"); | |
var old; | |
js.on('axis', function (evt) { | |
if (!(evt.type === "axis" && evt.number === 0)) return; | |
var value = ((evt.value + 0x8000) >> 12) + 1; | |
if (value !== old) { | |
old = value; | |
setPosition(value); | |
} | |
}); | |
}); | |
function setPosition(iLedNum) { | |
console.log(iLedNum); | |
if( iLedNum == 1 ) | |
{ | |
pinMode(5, OUTPUT); | |
pinMode(6, OUTPUT); | |
pinMode(7, INPUT); | |
pinMode(8, INPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 5, HIGH ); | |
digitalWrite( 6, LOW ); | |
} | |
else if( iLedNum == 2 ) | |
{ | |
pinMode(5, OUTPUT); | |
pinMode(6, OUTPUT); | |
pinMode(7, INPUT); | |
pinMode(8, INPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 5, LOW ); | |
digitalWrite( 6, HIGH ); | |
} | |
else if( iLedNum == 3 ) | |
{ | |
pinMode(5, OUTPUT); | |
pinMode(6, INPUT); | |
pinMode(7, OUTPUT); | |
pinMode(8, INPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 5, HIGH ); | |
digitalWrite( 7, LOW ); | |
} | |
else if( iLedNum == 4 ) | |
{ | |
pinMode(5, OUTPUT); | |
pinMode(6, INPUT); | |
pinMode(7, OUTPUT); | |
pinMode(8, INPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 7, HIGH ); | |
digitalWrite( 5, LOW ); | |
} | |
else if( iLedNum == 5 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, OUTPUT); | |
pinMode(7, OUTPUT); | |
pinMode(8, INPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 6, HIGH ); | |
digitalWrite( 7, LOW ); | |
} | |
else if( iLedNum == 6 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, OUTPUT); | |
pinMode(7, OUTPUT); | |
pinMode(8, INPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 7, HIGH ); | |
digitalWrite( 6, LOW ); | |
} | |
else if( iLedNum == 7 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, OUTPUT); | |
pinMode(7, INPUT); | |
pinMode(8, OUTPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 6, HIGH ); | |
digitalWrite( 8, LOW ); | |
} | |
else if( iLedNum == 8 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, OUTPUT); | |
pinMode(7, INPUT); | |
pinMode(8, OUTPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 8, HIGH ); | |
digitalWrite( 6, LOW ); | |
} | |
else if( iLedNum == 9 ) | |
{ | |
pinMode(5, OUTPUT); | |
pinMode(6, INPUT); | |
pinMode(7, INPUT); | |
pinMode(8, OUTPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 5, HIGH ); | |
digitalWrite( 8, LOW ); | |
} | |
else if( iLedNum == 10 ) | |
{ | |
pinMode(5, OUTPUT); | |
pinMode(6, INPUT); | |
pinMode(7, INPUT); | |
pinMode(8, OUTPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 8, HIGH ); | |
digitalWrite( 5, LOW ); | |
} | |
else if( iLedNum == 11 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, INPUT); | |
pinMode(7, OUTPUT); | |
pinMode(8, OUTPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 8, HIGH ); | |
digitalWrite( 7, LOW ); | |
} | |
else if( iLedNum == 12 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, INPUT); | |
pinMode(7, OUTPUT); | |
pinMode(8, OUTPUT); | |
pinMode(9, INPUT); | |
digitalWrite( 7, HIGH ); | |
digitalWrite( 8, LOW ); | |
} | |
else if( iLedNum == 13 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, INPUT); | |
pinMode(7, OUTPUT); | |
pinMode(8, INPUT); | |
pinMode(9, OUTPUT); | |
digitalWrite( 9, HIGH ); | |
digitalWrite( 7, LOW ); | |
} | |
else if( iLedNum == 14 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, INPUT); | |
pinMode(7, OUTPUT); | |
pinMode(8, INPUT); | |
pinMode(9, OUTPUT); | |
digitalWrite( 7, HIGH ); | |
digitalWrite( 9, LOW ); | |
} | |
else if( iLedNum == 15 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, INPUT); | |
pinMode(7, INPUT); | |
pinMode(8, OUTPUT); | |
pinMode(9, OUTPUT); | |
digitalWrite( 9, HIGH ); | |
digitalWrite( 8, LOW ); | |
} | |
else if( iLedNum == 16 ) | |
{ | |
pinMode(5, INPUT); | |
pinMode(6, INPUT); | |
pinMode(7, INPUT); | |
pinMode(8, OUTPUT); | |
pinMode(9, OUTPUT); | |
digitalWrite( 8, HIGH ); | |
digitalWrite( 9, LOW ); | |
} | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
var five = require('johnny-five'); | |
var board = new five.Board(); | |
board.on("ready", function () { | |
var leds = new Array(5); | |
for (var i = 0; i < 5; i++) { | |
leds[i] = new five.Led({pin: i + 5}); | |
} | |
setInterval(function () { | |
for (var i = 0; i < 5; i++) { | |
var on = Math.random() > 0.5; | |
leds[i][on ? "on" : "off"](); | |
} | |
}, 33); | |
}); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Video at https://www.youtube.com/watch?v=XjCsDosGghA