Vermes
Advanced Member level 4
A lot of programmers for AVR processors can be found on the Internet, but they mostly operate in low-voltage programming mode (ISP). It is really difficult to find a programmer which operates on HVPP/HVSP.
This project was inspired by „fusebit doctor” **broken link removed**. Spider was based on the fusebit doctor's schematic and looked like that:
You can also create similar device with more advanced technology with use of universal boards adn kynar. Atmega8515L is the main element of this version of project. This version is presented in the following pictures:
There is ISP header on the board, but there was no space left for buffer (74HC125) and it was placed on a smaller board, soldered to the bigger one.
The programmer's schematic consists of fusebit doctor's electronics with another processor clocked by resonator 7,3728MHz and added ISP (buffer from USBasp-yuki programmer: LINK.
Connector for additional modules with bases is compatible with the FD.
There are some drawings which are enough to create that system:
Firmware for AT8515L was made in C (compiled using GCC).
Link to original thread (useful attachment) - Programator HVPP/HVSP/ISP dla procesorów Atmel AVR