AVR910 programmer - easy Atmel AVR programmer with RS-232 connector and support for Atmel AVRPROG

This programmer is cheaper alternative for Atmel's AVRISP programmer. Works with Atmel's AVRPROG programming utility which is part of AVR Studio IDE. 
 Programmer schematic :

PCB  (Download : avr910.pdf)

Components placement:

Assembled programmer :

Programmer firmware
 Firmware for programmer You can download from http://www.mikrocontroller-projekte.de/  but I modified PCB. You must change two lines in source file :
 .equ MISO = PB7 (line number 299)
 .equ SCK = PB6 (line number 303)
 Modified ASM file : avr910_asm.zip
 Compiled Hex file for 7,3728 MHz crystal and 115200bps baudrate: avr910_hex.zip