led

The led is an object representing the red LED next to the USB port. Internally this LED is connected to pin 13 of the Circuit Playground.

Properties and Methods

• led.on() - Turn the red LED on
• led.off() - Turn the red LED off
• led.toggle() - Alternate between turning the LED on and off
• led.blink() - Blink at a given rate
• led.pulse() - Pulse at a given rate

Examples

Blink: Blink Buttons

Changes the rate of how fast the button blinks depending on which button is pressed.

//Changes the rate of how fast the button blinks depending on which button is pressed.
var blinkRate = 50;

onBoardEvent(buttonL, "down", function(event) {
  blinkRate = blinkRate - 10;
  led.blink(blinkRate);
});

onBoardEvent(buttonR, "down", function(event) {
  blinkRate = blinkRate + 10;
  led.blink(blinkRate);
});

Pulse: Pulse versus Blink

onBoardEvent(toggleSwitch, "close", function(event) {
  led.pulse(200);
});
onBoardEvent(toggleSwitch, "open", function(event) {
  led.blink(200);
});

Toggle: Button Lightswitch

onBoardEvent(buttonL, "down", function(event) {
  led.toggle();
});

On and Off: Lightswitch

The red LED light turns on when the switch is flipped open, and off when the switch is flipped closed.

//The red LED light turns on when the switch is flipped open, and off when the switch is flipped closed.
onBoardEvent("toggleSwitch", "open", function(event) {
  led.on();
});
onBoardEvent("toggleSwitch", "closed", function(event) {
  led.off();
});

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