Overview
The Traffic Light Micro:Bit cycles through three LEDs, red, yellow, and green, simulating a traffic light!
Code
basic.forever(function () {
pins.digitalWritePin(DigitalPin.P0, 1)
pins.digitalWritePin(DigitalPin.P1, 0)
pins.digitalWritePin(DigitalPin.P2, 0)
basic.showString("Traffic")
pins.digitalWritePin(DigitalPin.P0, 0)
pins.digitalWritePin(DigitalPin.P1, 1)
pins.digitalWritePin(DigitalPin.P2, 0)
basic.showString("Light")
pins.digitalWritePin(DigitalPin.P0, 0)
pins.digitalWritePin(DigitalPin.P1, 0)
pins.digitalWritePin(DigitalPin.P2, 1)
basic.showString("Program")
})