28 April 2015
BUILD IT YOURSELF
By Frank Muratore
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Have you ever built a project that needed a
load to be switched on or off at regular
intervals? Or, do you have a use for an accurate
timer to facilitate switching of lights or another
device with repetitious on/off cycles? Don't
have the money or time to buy or build such a
device? Then, the "Super Timer" is for you.
This timer not only requires a minimum parts
count, but can be built in one evening. The
timer is programmed via thumbwheel switches
and — besides having eight modes of operation
— it can run from milliseconds to 9,999 hours.
(That's over a year!) The unit is built around the
Omron H3CA-A timer module.
BUILD THE SUPER KISS
■ Super Timer (front view).