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apakah Posted - May 26 2006 : 08:11:24 AM
how to make a rain detector circuits that connected to a wiper motor cars (12 volts)

din
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Aaron Cake Posted - May 26 2006 : 09:53:04 AM
The simplest way would be to have a sensor made of two wires about 1MM apart. When a drop of water hits both wires, an connection is made which will trigger a transistor through it's base (you probably actually want two transistors in Darlington configuration). That then triggers the wiper relay. For a little more sophistication, have it trigger a timer so that if the sensor dries off for a few minutes the wipers keep running.

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