A remote control is a device which can be used for controling a particular electrical gadget remotely without making any physical contact with the appliance which is being controled or simply the appliance can be controled wirelessly.
Although there are many remote control gadgets available in the market but these are highly priced or might be not legal to use freely.
What about making a homemade remote control that wouls easily fulfil the requirements and also provide a lot of fun while making it.
Refer the CIRCUIT DIAGRAM to know how to make an FM remote control
The idea is rather simple. weare not getting into complex circuits and setting procedures. Instead we are going to modify an existing FM radio so that it can be used for receiving the signals from a small FM transmitter built by you.
This audio reception over the FM radio can be effectively converted into outputs that can be used for switching electrical appliances connected through a relay mechanism.