If you are planning to make AVR USB-ISP programming adapter you may want to consider this version which is compatible to USBasp hardware.
Major features adapter has:
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small hardware design;
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STK500v2 compatible;
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AVR910 Support (alternate Firmware or Atmega168) ;
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Single side usable;
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Has 10 pin,6 pin and connectors;
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1 kHz – 3 MHz ISP frequency ;
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Target Status LED´s;
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Target can be supplied with 5V @ 100 mA max from the programmer;
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Automatic shutdown when current is to big;
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Automatic detection of highest ISP Speed if wished (only with Atmega168);
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ANSI and VT100 compatible Terminal mode to make Settings and view Target Information without Programmer Software
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USB/RS232 Converter(optional);
- Bootloader Support.
Files are available in Eagle CAD format, PDF for convenient view. Also you may find Target 3001 format and Sprint-Layout. Project itself is well documented and easy to follow. Hardware and firmware are constantly improved what makes this tool even more useful.
