User Manual

24
Lesson 6 Infrared Transmitter
Introduction
An infrared transmitter module (as shown below) is a device that uses 38K modulation signal
generated by MCU to emit infrared rays.
Components
- 1 * SunFounder Uno board
- 1 * USB data cable
- 1 * Infrared transmitter module
- 1 * LCD1602
- 1 * Potentiometer
- Several jumper wires
Experimental Principle
An infrared transmitter is a device applied in remote control. It can emit rays within a certain
range through an infrared transmitting tube so as to control signals. Infrared transmitter is
widely used in consumer electronics, industry and communication, etc.
In this experiment, connect pin S of the infrared transmitter module to D3 to build a simple
circuit. When the coded value for an infrared ray is input by programming and then the
infrared transmitter module emits the infrared ray, the LED attached to pin 13 will light up. In
addition, the coded value of the infrared ray will be displayed on LCD1602.
Experimental Procedures
Step 1: Build the circuit
Infrared Transmitter Module SunFounder Uno
S -----------------------------------------D3
- ----------------------------------------- GND
LCD1602 connection: connect pin RS to digital pin 5; R/W to GND; E to digital pin 4; D4-D7 to
digital pin 9 to 12; VSS to GND; VDD to 5V; A to 3.3V; K to GND
SunFounder