A Raspberry Pi Pico and KY-034 7 color flashing LED

In this article, we connect an KY-034 7 color flashing LED to a Raspberry Pi Pico, any Rp2040 type board will be suitable. We actually tested this with a Cytron Maker Pi Pico

The KY-034 7 color flashing LED module can emit red and green light. You can adjust the intensity of each color using a Pico PWM pin or simply switch the LED on/off using standard GPIO.

We will use Micropython for these examples but of course you can use the Arduino IDE as well if you have Raspberry Pi Pico support enabled

The sensor looks like this

Parts Required

You can connect to the module using dupont style jumper wire.

Name		Link
Raspberry Pi Pico		Aliexpress link Amazon Ebay
37 in one sensor kit		Aliexpress link Amazon link
Connecting cables		Aliexpress link Amazon Ebay

 

Schematic/Connection

Pico	SENSOR
GPIO0	S
GND	–

 

Code Examples

Basic example in  thonny

from machine import Pin
import time

# Initialization of GPIO0 as output
led = Pin(0, Pin.OUT)

# switching on/of the LED
while True:
    led.value(0)
    time.sleep(2)
    led.value(1)
    time.sleep(10)

 

REPL Output

N/A

Links

https://github.com/getelectronics/rp2040learning/tree/main/Sensor%20Kit/KY-034_7_Color_Flash