We just started the BAP-project. Busware AVR Programmer. This is probably the smallest native USB programmer for AVR processors. The board is equipped with an AT90USB162 and bidirectional levelchangers for all of its PORTB I/Os available on the 10-pin 100mil connector.

The module itself can be flashed via USB (dfu-programmer/FLIP). So its possible to implement any other interface (like JTAG) at a later stage.

Forgot: a LED and switch for multipurpose is also available

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