The KY-034 features a 7 color LED that flashes through a sequence of colors, creating a multicolored pattern of flashing light. The sequence is predefined and cannot be modified.This module can be used in decorative projects, and it is compatible with Arduino, ESP32, Raspberry Pi, ESP8266, and other popular microcontroller boards. SPECIFICATIONSWorking voltage3V — 5V DCLED modelYB-3120B4PnYG-PMLED type5mm round headBoard Size16.5mm x 18.5mm [0.65in x 1.73in] CONNECTION DIAGRAMConnect the KY-034’s signal pin (S) to pin 13 on the Arduino, then connect the ground pin (-) to GND.The middle pin and the (-) pin on the KY-034 are connected, and they both act as ground. You only need to connect one of the pins to GND on the Arduino.Keep in mind that there are similar modules with a different pin configuration. Always check the pins before connecting your board.KY-034 ARDUINO CODEIn the following sketch, we’ll use the pin 13 on the Arduino to repeatedly turn the LED on the module on for 3 seconds and off for a second. int ledPin = 13; // pin to control KY-034 void setup() { pinMode(ledPin, OUTPUT); // define pin as output } void loop() { digitalWrite(ledPin, HIGH); // turn LED on delay(3000); // wait for 3 seconds digitalWrite(ledPin, LOW); // turn LED off delay(1000); // wait for a second }12345678910int ledPin = 13; // pin to control KY-034void setup() { pinMode(ledPin, OUTPUT); // define pin as output } void loop() { digitalWrite(ledPin, HIGH); // turn LED on delay(3000); // wait for 3 seconds digitalWrite(ledPin, LOW); // turn LED offdelay(1000); // wait for a second} DOWNLOADS http://• Fritzing Part: KY-034 Automatic Flashing Color LED
