Countdown Timer

02/01/2010

Important!

A bug found in the placement of transistors T1, T2, T3 in PCB.
The correct is the reverse of the drawing in silkscreen. The schematic it’s ok.

timer.sch

A countdown timer designed for my PCB development box. The time range is between 1 to 90 minutes.
Read more…

Be the first to like this post.

Comments are closed.

Projects with Atmel's AVR micros