USB Infrared Toy v2 is back in stock at Seeed Studio. You can use it as a remote control with your computer, view infrared signals on a logic analyzer, capture and replay remote control buttons. You can get IR Toy v2 for $22.05, including world wide shipping.
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I wanted to check out the schematics but the link to the files doesn’t have any files.
https://code.google.com/p/dangerous-prototypes-open-hardware/source/browse/#svn/trunk/USB_IR_Toy/hardware
Not sure about the SVN but the schematic is on the doc page.
http://dangerousprototypes.com/docs/File:Cct-USB-IRToy-vii.png
http://dangerousprototypes.com/docs/USB_IR_Toy_v2#Hardware