A weblog focused on interesting circuits, ideas, schematics and other information about microelectronics and microcontrollers.
Super simple AVR ISP USB programmer
An in-system programmer for AVR microcontrollers built with ATTiny44 with virtual USB firmware.
Author says: "It's based on the USBtiny and V-USB firmwares, which allow the ATtiny44 to perform USB communication in software. Programming can be done through avrdude. The schematic (PDF) is super simple: USB connector, ATtiny44, and 6-pin ISP header, with assorted passive components."
Read more: FabISP, a fab-able in-system programmer