xTimer V1.0
This is a simply and easy build 4-channel timer, suitable for energy saving, simple hardware and nice firmware with c coding. Automatic power down mode, simple settings, optional buzzer for sound alarm.This project use ATMEL AT89C4051 and MAX7219 as the main parts.
   xTimer V1.0
Read more on xTimer V1.0 website
chaokhun.kmitl.ac.th