DIY IR Remote Control Switch
Project 7: DIY IR Remote Control Switch Objective: To build a DIY Infrared (IR) remote control switch that can turn ON/OFF an LED (or appliance) using a TV/DVD remote. Components Required: IR Receiver Module (TSOP1738) Arduino Uno (or ATtiny85 for a compact design) NPN Transistor (BC547) Resistors – 220Ω, 1KΩ, 10KΩ Relay Module (5V) LED (or appliance) Power Supply (9V Battery / 5V Adapter) Breadboard & Wires Any IR Remote (TV, DVD, etc.) Circuit Diagram: (A schematic can be designed in Fritzing or Tinkercad.) Step-by-Step Instructions: Step 1: Connect the IR Receiver Module TSOP1738 has 3 pins : VCC → 5V GND → GND OUT → Arduino Digital Pin (D2) Step 2: Decode the Remote Signals Upload an IR decoding sketch to Arduino using the IRremote library . Open the Serial Monitor and press buttons on the remote. Note down the unique HEX codes of the buttons. Step 3: Control the LED/Relay Program Arduino to toggle the LED/Relay when a specific IR code is received. Step 4: Power th...