Build this simple Cmos 4060 timer yourself - using cheap off-the-shelf components.

Breadboard Layout Choosing Parts Testing Your Timer More Timer Circuits Firefox Optimised

24-Hour Timer No.1 - Photograph

Free Circuit


Circuit Board

This is a photograph of the First Cmos 4060 Multi-Range Timer. It will adjust from about 30-seconds to 24-hours and beyond. It's designed to provide a single output period - but it's easily modified to produce a regularly repeating output. I used an SPCO/SPDT relay in the prototype - you can use a multi-pole relay if it suits your application.
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