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Wednesday, May 27, 2009

IR Transmitter for Serial Interface

How to make IR Transmitter for your serial interface ( RS232 , COM)

What IR range do you want to send using your serial port? You should select IR Emitting diode with your IR range. If you want to control your CD players, DVD players, TVs, VCRs, Cable Boxes, Receivers, Tape Decks, DVRs, home automation, etc. You can use consumer standard IR devices like 510E850C , TIL31 or you can try with your old Remote control Infrared LED. Use this simple circuit to connect your IR LED to serial port.

IC1 = 78L05

Q1 = 2N2222
or try with C945

D1 = 1N4148

R1 = 1K

R2 = 47Ω


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