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In a previous post i've explain AVRlirc (by Paul Fox) configuration. Here is a little hack getting it to work with USB, giving a simple USB IR receiver.

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Using DIY IR receiver with GNU/Linux is quite simple. All you need is a TSOP receiver, a diode, a resistor and a78L05 regulator as explained here. But this wont work with USB/serial adapter and it need a kernel module to directly drive DCD line.

But there is Paul Fox's avrlirc project, using AVR Attiny2313 to connect IR receiver to the serial RX line. It can be used with USB/serial and embedded system with simple serial port like... La Fonera.

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