ButtLoad 1.3 - Butterfly AVRISP Replacement
Buttload is a replacement for an official AVRISP, but is open source and has more features. All you need to get it going is a AVRButterfly board, avaliable from our very own Smokey (www.smileymicros.com) or the current AVRFreaks T-Shirt offer. Once loaded, the system's ready to go - no hardware modifications, existing programmers or bootstrap cables to worry about! Since all the changes are in software, all you need to revert your butterfly back into its previous condition is just reload your old firmware.
Because the firmware can be loaded via the Butterfly's existing bootloader, this programmer design does not suffer from the "chicken and egg" problem of other homemade programmers.
ButtLoad is a cheap alternative to the more expensive programmers, and is faster to build. Not only that, but it offers more features than the official AVRISP - and you can always use the Butterfly as a development board afterwards!
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Features:
* AVRISP Emulation - works with AVRStudio
* Self powered - does not need to be connected to a circuit to interface with AVRStudio
* Transparent support for large flash memory AVRs (up to 256KB)
* No extra parts or modifications required for 3V programming
* Can directly program and read any Atmel dataflash
* Can store a 256kb HEX file, EEPROM, fuse and lockbytes in non-volatile memory
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Link to Site: http://www.avrfreaks.net/index.php?module=...em_type=project
Buttload is a replacement for an official AVRISP, but is open source and has more features. All you need to get it going is a AVRButterfly board, avaliable from our very own Smokey (www.smileymicros.com) or the current AVRFreaks T-Shirt offer. Once loaded, the system's ready to go - no hardware modifications, existing programmers or bootstrap cables to worry about! Since all the changes are in software, all you need to revert your butterfly back into its previous condition is just reload your old firmware.
Because the firmware can be loaded via the Butterfly's existing bootloader, this programmer design does not suffer from the "chicken and egg" problem of other homemade programmers.
ButtLoad is a cheap alternative to the more expensive programmers, and is faster to build. Not only that, but it offers more features than the official AVRISP - and you can always use the Butterfly as a development board afterwards!
---------------------------------------------------------------------
Features:
* AVRISP Emulation - works with AVRStudio
* Self powered - does not need to be connected to a circuit to interface with AVRStudio
* Transparent support for large flash memory AVRs (up to 256KB)
* No extra parts or modifications required for 3V programming
* Can directly program and read any Atmel dataflash
* Can store a 256kb HEX file, EEPROM, fuse and lockbytes in non-volatile memory
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Link to Site: http://www.avrfreaks.net/index.php?module=...em_type=project