The working of IR remote and the TSOP1738 can be covered in detail in this article: IR Transmitter and Receiver This TSOP1738 sensor can sense 38Khz Frequency signal. For detecting IR remote signal, we use TSOP1738 IR Receiver. Here in this project we control home appliances using IR TV remote. There are many types of IR Remote are available for different device but most of them are worked on around 38KHz Frequency signal. Here in this project we have used 3 bulbs of different colors, for demonstration which indicates Fan, Light and TV. If any match occurs then Arduino perform relative operation and the corresponding result is also displayed on 16x2 LCD by using appropriate commands. These pulses are received by TSOP1738 sensor and read by Arduino and then Arduino decodes received train of pulse into a hex value and compares that decoded value with the predefined hex value of the pressed button. When we press any button of IR Remote then remote sends a code in form of train of encoded pulses using 38Khz modulating frequency. Working of this project is easily understandable.

After receiving signal from IR remote, Arduino sends related signal to relays which are responsible for switching ON or OFF of the home appliances through a relay driver. We send some commands to the controlling system by using IR TV/DVD/MP3 remote for controlling AC home appliances.

In this project, Arduino is used for controlling whole the process. In this project, we are using IR based wireless communication for controlling home appliances. Previously we have covered many types of Home automations using different technologies like DTMF Based Home Automation, PC Controlled Home Automation using Arduino, Bluetooth Controlled Home Automation.

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