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IrOn-Off

 

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.

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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 IrOn-Off or Ir-switch.

 
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schematic IrOn-Off

Elektronika Kifo

 

circuit board

components

 

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.

Instructions

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.

Program code for this device is used from IrLightDimmer and it’s only a subroutine, which is used for memorize and recognize ir-protocol.

I hope you will find a place to use this simple and usable device.

 

hex file can be downloaded here: hex IROn-Off-629 - hex file for PIC12F629
  hex IrOn-Off-675 - hex file for PIC12F675
Circuit board can be downloaded here: IrOn-Off-Protel - file in Protel 99 SE
  IrOn-Off.pdf - circuit board in pdf format

 

Since I have noticed that there is a problem with programming these microcontrollers you should read the short how-to for programming PIC12F629/675 microcontrollers.

If you have any difficulty in making this device, feel free to mail me.

 

Elektronika Kifo

IrOn-Off v.2 infrared control

This is another simple example how to control electric devices with remote controler from tv, dvd,... On left pictures you can see device with two relays, which you can turn on or off two different electrical devices.
IrOn-Off v.2 infrared control works like above described device, but with two outputs. Device works with two mode, who are selected with jumper "Mode". One way is: with every short press of remote controler key, you change the state of relay in receiver (IrOn-Off v.2). Another way is: relay is turn on only if you press and hold remote controler key. When you release key on remote controler, relay will be off.
Memorizing remote controller keys is simple and you can do it following this procedure: press key on Ir-switch "Store" and led-diode will turn ON. Now you can release key "Store", and press two keys one by one on your remote controller. If you do that, led-diode will blink, and your memorizing process is finished.

 
upload 09.01.2008
Elektronika Kifo
 
Shema IrOn-Off v.2 infrared control
Elektronika Kifo

Circuit board is made in one layer technology with characteristical blue colour. You can use two type of ir receiver TSOP2238 (small) or TSOP1738 (big), or you can use any other type of IR-receiver which has frequency of 38KHz, but you must direct attention to pinout.

The hard of device is microcontroller PIC12F629 in Small-Outline Integrated Circuit (SOIC) package.

For more information about circuit board and programming microcontroller PIC12F629, feel free to mail me.

Hex file can be downloaded here:IrOn-Off v.2.hex
With this hex file you can use microcontroller PIC12F629 or PIC12F675

Elektronika Kifo

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