Cat5 Cable Checker
Exposure Timer 2 Solder Station
MP3 Player Touch
Can Bus Schield for Banana Pi
Exposure timer 2
OverviewSome time ago i published a version of an exposure timer based on the AT90S2313 for a single sided exposure unit on this site.
Meanwhile a friend of mine helped me building a new double-sided exposure unit, which created the needs of a new timer. In this new version i also got rid of some design flaws in the previous version.
The Classic-AVR (AT90S2313) has high sesitivity in the reset circuit which makes it reset sometimes when the fluorescent tube are switched. The Software bypasses the problem as good as possible, but with the new Mega and Tiny series of the AVR microcontroller this can be enhanced.
FeaturesWith this timer some new features are accompanied:
|last change to timer_mega8.html: 2004/09/03|