The Signalyzer offers support for a wide variety of target voltages from 1.2V to
5.5V. A second connector provides access to a TTL level UART.
-* American Microsystem M5960 USB JTAG programmer.
+* TinCanTools 'Flyswatter' USB JTAG programmer.
* Turtelizer 2: http://www.ethernut.de/en/hardware/turtelizer/index.html
Another USB JTAG programmer, with freely available schematics. It supports