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In this article, we connect a KY-029 Dual Color LED to our Microbit – we will use Makecode and show the JavaScript and Python output as well
The KY-009 RGB Full Color LED module emits a range of colors by mixing red, green, and blue light.
This module consists of a 5050 SMD LED and a 4 pin header.
| Operating Voltage | 5V max Red 1.8V ~2.4V Green 2.8V ~ 3.6V Blue 2.8V ~ 3.6V |
| Forward Current | 20mA ~ 30mA |
| Operating Temperature | -25°C to 85°C [-13°F ~ 185°F] |
| Board Diemsions | 18.5mm x 15mm [0.728in x 0.591in] |
Depending on the input voltage, series resistors are recommended.
| Series resistor (3.3 V) [Red] | 180 Ω |
| Series resistor (3,3 V) [Green] | 100 Ω |
| Series resistor (3,3 V) [Blue] | 100 Ω |
Parts Required
| Name | Link | |
| Microbit | ![](http://ae01.alicdn.com/kf/Sc095f39f7e8c47be8df8b6d35e402d48m.jpg_140x140.jpg") |
|
| 37 in one sensor kit | ![](http://ae01.alicdn.com/kf/Scb660656a1534430bdd567806bc61643e.jpg_80x80.jpg") |
|
| Connecting cables |  |
Schematic/Connection
| MICRO:BIT | SENSOR |
|---|---|
| Pin 1 | R |
| Pin 2 | G |
| Pin 0 | B |
| GND | GND |
Example
All of these are from the Microsoft Makecode site – this example just cycles through red, green and blue
MakeCode
Python
def on_forever():
pins.digital_write_pin(DigitalPin.P0, 1)
pins.digital_write_pin(DigitalPin.P1, 0)
pins.digital_write_pin(DigitalPin.P2, 0)
basic.pause(1000)
pins.digital_write_pin(DigitalPin.P0, 0)
pins.digital_write_pin(DigitalPin.P1, 1)
pins.digital_write_pin(DigitalPin.P2, 0)
basic.pause(1000)
pins.digital_write_pin(DigitalPin.P0, 0)
pins.digital_write_pin(DigitalPin.P1, 0)
pins.digital_write_pin(DigitalPin.P2, 1)
basic.pause(1000)
basic.forever(on_forever)
JavaScript
basic.forever(function on_forever() {
pins.digitalWritePin(DigitalPin.P0, 1)
pins.digitalWritePin(DigitalPin.P1, 0)
pins.digitalWritePin(DigitalPin.P2, 0)
basic.pause(1000)
pins.digitalWritePin(DigitalPin.P0, 0)
pins.digitalWritePin(DigitalPin.P1, 1)
pins.digitalWritePin(DigitalPin.P2, 0)
basic.pause(1000)
pins.digitalWritePin(DigitalPin.P0, 0)
pins.digitalWritePin(DigitalPin.P1, 0)
pins.digitalWritePin(DigitalPin.P2, 1)
basic.pause(1000)
})