Example Code for Arduino-See Infrared

Hardware Preparation

• DFRduino UNO R3 x1
• IO Expansion Shield x1
• IR Transmitter Module x1
• Phone with camera x1

Software Preparation

• Arduino IDE

Wiring Diagram

Step by Step

• Open "Blink" example at rduino IDE
• Modify the pin of "int led = 13" to 3
• Upload

Result

In the darkness of the environment, you are going to see blinking blue light on phone's screen when use camera to shoot the infrared LED.