Thus, a transistor is used for switching the relays. You may find this helpful - Working of Relays TransistorĪrduino can operate the low current components like LED and Buzzer, but relays need high current (100 mA to 250mA) to switch appliances. A transistor is using for switching the relay and a diode is connected parallel to the relay but in reverse bias, which is used for limiting the reverse current. In the project, a12-volt relay used for switching the home appliances.
This sensor have three pins 1st is Vcc 2nd is GND and third is OUT the operating voltage of the sensor is 3.7 to 5 volt. This is an IR sensor, which receives the signal of IR Remote. 12-volt relays are used for switching the appliances. Output pin of sensor is connected to the Arduino, when any button of the remote is pressed, IR LED of remote sends a unique encoded signal, this signal is received by sensor and sent to the Arduino, The Arduino decode the signal and turn on and off the lights according to the signal. A TSOP 1838T sensor is using for receiving signal from the remote. In the project, an Arduino is using as controlling unit. IR Remote Control Home Automation – Components Used Component The project is not very easy but you can make easily, because PCB designed on EAGLE, so you just need to print the PCB. Arduino decodes the signal and turn ON and OFF the appliances accordingly. A 3-pin sensor TSOP 1838T is connected to the Arduino, which reads the signal and sends to the Arduino. Arduino control the relays according to the button pressed on the remote. If you are a pro in Arduino, you can use any other Arduino according to your choice. Refer : Home Automation Using Arduino & GSM Module Bluetooth Home Automation Using AVR & Android AppĪn Arduino Nano is used in the project, because its size is small and does not require any external programmer. Other articles on Home Automation have also been published.
Our article on Switchboard for Home Automation will give you a clear idea on the subject. But to automate and control home appliances, you must have a basic idea of connecting them to switchboards, and must learn on what to do if the remote malfunctions. The circuit provided below is designed to switch the relays. The project deals with the automation of four home appliances, like Tube lights, fan, bulbs, and of course TV. To automate them, four relays must be used. This same principle can be applicable in offices and industries as well. In this project, we are going to show you how to control home appliances using a TV Remote.
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