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Infrared Transceiver for the PC (1)

combined remote control and data link

Infrared Transceiver for the PC (1)
This article does more than just describe an IR transceiver that you can use with your PC for remote control and data transfer. Based on the successful Elektor Electronics ‘PC Peripheral Design’ series, it also provides information about the principles of the infrared transfer technique used and interface technology, which you can use for your own projects.Infrared data transfer is becoming increasingly more important. Television remote controls use infrared light, but so do PC mice, keyboards, printers and other peripherals. Infrared light is also used in fibre-optic cables. In a sense, the PC infrared transceiver presented here is a practical application that represents a continuation of the series of articles on PC interfaces and Visual Basic that appeared in the ‘PC Serial peripheral Design’ course (Elektor Electronics 9/2000 through 3/2001).
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

R1,R2,R5 = 4kOhm 7
R3 = 100kOhm
R4 = 470Ohm
R6 = 27kOhm
R7 = 1kOhm
R8 = 22Ohm
P1 = 2kOhm 5 preset
C1 = 4µ F7 25V radial
C2 = 100nF
C3 = 10nF
C4 = 22nF
C5 = 1µ F 25V radial
D1,D2,D3,D6,D7 = 1N4148
D4,D5 = IR-LED, e.g. LD271
T1,T2 = BC547
T3 = BC337
IC1 = 78L05
IC2 = 555
IC3 = TSOP1836, SFH506-36
K1 = 9-way sub-D socket (female), angled pins, PCB mount
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