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Keyestudio Super-bright BLUE LED module

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This is a special LED module. When you connect it to ARDUINO development board, after program, it can emit beautiful light. Of course, you can also control it using PWM. It will be like fireflies at night. Isn’t cool? We can also combine it with other sensors to do various interesting interactive experiments.

Note: You can also choose other LED to emit different color of light like yellow, red, green and white.



Module type: digital

Working voltage: 5v

Distance between pins: 2.54mm

Size: 35*20mm

Weight: 3g


Connection Diagram

Sample Code


int led = 3; 

void setup()


  pinMode(led, OUTPUT);     //Set Pin3 as output


void loop()

{      digitalWrite(led, HIGH);   //Turn off led


          digitalWrite(led, LOW);    //Turn on led




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