Device Switching By Using the TV Remote System

Aim:The aim of Device Switching by Using The TV Remote System project is to controlling the device switching (i.e. ON or OFF) by using the using micro controller with TV remote.

 Hardware Description:The block diagram of the Device switching by using the TV remote method is shown in figure. As shown in the block diagram ,the main circuit is a combination of two sub circuits.

   1. Zero crossing detector circuit. 

   2. IR sensor(TSOP1738).

 After getting an interrupt 89C52will switch ON/OFF the device based on key pressed on TV remote. 

During power on condition all three devices are in OFF condition.When you press Key ‘1’ on TV remote device 1 switched on. Again when you press key ‘1’ on TV remote.

Device 1 switched off. When you press Key ‘2’ on TV remote device 2 switched on. Again when you press key ‘2’ on TV remote device 2 switched off. When you press.

Key ‘3’ on TV remote device 3 switched on. Again when you press key ‘3’ on TV remote Device 3 switched off. 

The user can press the TV remote, the TSOP1738 decode the command depending on the pressed key the control signal for the pressed key ,already programmed into the microcontroller flash memory, sending to the Buffer IC(Relay driver ULN2003) IC ,depending on the  controlling signal respective device is switched ON/OFF.

download  Device Switching by Using The TV Remote System embedded system  Project .

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