Vermes
Advanced Member level 4
It is a simple USB → 1 Wire adapter based on Atmega8 microcontroller. USB support was implemented using V-USB driver from Objective Development. Converter was made after reading documentation of DS2490 chip, that is why some of the constructions and way of sending/receiving data may look similar to solutions used in the processor.
The whole cooperates with digitemp in version 3.5.0 patched.
A few words about the annexes (attached in the original thread):
- wirereader-1.02.2.tar.gz contains the device's firmware (with the amended PCB model)
- digitemp_wirereader_ebuild.tar.gz contains an ebuild for Gentoo Linux users
- digitemp-3.5.0-wirereader_support.patch.gz contains a patch for digitemp
- wirereader_schem.pdf schematic diagram of the adapter
- wirereader_pcb.pdf scheme of the board
Link to original thread (useful attachment) – Przejściówka USB->1 Wire na ATmega8