KY-034 7 Color flash-LED

int Led  =  13;
 
void setup  ( )
{
  pinMode (Led, OUTPUT)  ;  // Initialization  Output spin for the LED
}
 
void loop  ( )  //Main program loop
{
  digitalWrite   (Led, HIGH)  ;  // LED  is switched on
  delay (4000)  ;  // Wait mode for 4 seconds
  digitalWrite  (Led, LOW) ;  // LED  is switched off
  delay (2000)  ;  // Wait mode for another two seconds in which the LED is switched off
}

If this module is supplied with voltage, a color sequence is automatically emitted by the LED. The LED has 7 different colors and thus also all resulting mixed colors.

Technical data

Voltage range	3.3 V - 5 V

Pin assignment

Code example Raspberry Pi

Connection assignment Raspberry Pi

Raspberry Pi	Sensor
GPIO 24 [Pin 18]	Signal
GND [Pin 6]	GND

#  Required modules are imported and set up
import RPi. GPIO  as  GPIO
import time
  
GPIO.setmode (GPIO.BCM) 
  
# The input pin to which the sensor is connected is declared here.  In addition the PullUP resistor at the input is activated
LED_PIN = 24
GPIO.setup(LED_PIN, GPIO.OUT, initial= GPIO.LOW)
  
print ("LED test [press CTRL+C to end the test]")
 
# Main program loop
try:
    while True:
        print("LED 4 seconds on")
        GPIO.output(LED_PIN,GPIO.HIGH) # LED is switched on
        time.sleep(4)  # Wait mode for 4 seconds
        print("LED 2 seconds off") 
        GPIO.output (LED_PIN,GPIO.LOW) # LED is switched off
        time.sleep (2)   # Standby mode for another two seconds when the LED is switched off
 
# Tidying up after the program is finished
except KeyboardInterrupt:
    GPIO.cleanup ()

Sample program download

KY034-RPi-ON-OFF.zip

To start with the command:

sudo python3 KY034-RPi.py

# Load libraries
from machine import Pin
import time

# Initialization of GPIO18 as output
led = Pin(18, Pin.OUT)

# Endless loop for the ON/OFF switching of the LED
while True:
    led.value(0)
    time.sleep(2)
    led.value(1)
    time.sleep(10)