IR On/Off Switch Using Microcontroller

Turn ON or OFF
electrical devices using remote control is not a new idea and you can
find so many different devices doing that very well. For realization of
this type of device, you must make a receiver, a transmitter and
understand their way of communication. Here you will have a chance to
make that device, but you will need to make only the receiver, because
your transmitter will be the remote controller of your tv, or video
…This is one simple example of this kind of device, and I will call it
IR On-Off or IR-switch.

How it works:
Choose one key on your remote controller (from tv, video or similar),
memorized it following a simple procedure and with that key you will
able to turn ON or OFF any electrical device
you wish. So, with every short press of that key, you change the state
of relay in receiver (Ir-switch). Memorizing remote controller key is
simple and you can do it following this procedure: press key on
Ir-switch and led-diode will turn ON. Now you can release key on
Ir-switch, and press key on your remote controller. If you do that,
led-diode will blink, and your memorizing process is finished.

To make this device will be no problem even for beginners in electronic,
because it is a simple device and uses only a few components. On
schematic you can see that you need microcontroller PIC12F629,
ir-receiver TSOP1738 (it can be any type of receiver TSOP or SFH) and for relay you can use any type of relay with 12V coil.

Click here to download source code for PIC12F629-675 . To extract the archive use this password

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