If you want to program an AVR chip as inexpensively as possible, then [Ian’s] solution might just be for you. He built an AVR programmer using only four components. This design is based on the ...

The project allows an easy transfer of hex programs to most Atmel AVR microcontrollers without the need for high cost and constraint time. The project allows an easy transfer of hex programs to most ...

The circuit of AVR In-System-Programmer (ISP) has been modified to function with USB connection to a PC. The modification of the old AVR ISP includes the replacement of two transistors which will be ...

In retrospect it may have been a better choice to use a 2×3 IDC connector and route the signals using the AVR ISP standard (from AVR: In-System Programming PDF).