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 = 78L05Q1 = 2N2222
or try with C945
D1 = 1N4148
R1 = 1K
R2 = 47Ω
LED1 = IR LED
510E850C
TIL31
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