LED
Allows user to interact with LEDs through digital output and PWM (Pulse Width Modulation)
For more information click here.
How To Connect
Cylon.robot({
connections: {
arduino: { adaptor: 'firmata', port: '/dev/ttyACM0' }
},
devices: {
led: { driver: 'led', pin: 13 }
},
});
How To Use
This example turns an LED on and off.
var Cylon = require('cylon'); Cylon.robot({ connections: { arduino: { adaptor: 'firmata', port: '/dev/ttyACM0' } }, devices: { led: { driver: 'led', pin: 13 } }, work: function(my) { every((1).second(), function() { my.led.toggle(); }); } }).start();
Commands
turnOn
Writes a HIGH (1) value to the pin, turning the LED on.
Also sets this.isHigh to true.
Params
-
[callback] (
Function) - (err, val) triggers when write is complete
Returns
- (
undefined)
turnOff
Writes a LOW (0) value to the pin, turning the LED off.
Also sets this.isHigh to false.
Params
-
[callback] (
Function) - (err, val) triggers when write is complete
Returns
- (
undefined)
toggle
Toggles the LED on or off, depending on its current state
Params
-
callback (
Function) function to be invoked when done
Returns
- (
undefined)
currentBrightness
Returns the current brightness of the LED.
Params
-
[callback] (
Function) invoked witherr, valueas args
Returns
- (
Number) the current LED brightness value (0-255)
brightness
Sets brightness of the LED to the specified value using PWM.
Params
-
value (
Number) - PWM value to set the brightness to (0-255) -
[callback] (
Function) - (err, val) triggers when write is complete
Returns
- (
undefined)
isOn
Returns whether or not the LED is currently on
Params
-
[callback] (
Function) invoked witherr, valueas args
Returns
- (
Boolean) whether or not the LED is currently on
Circuit
