dear mr aaron, i have tried a rain detector that are listed in your web. i change the buzzer (12 V) to a wiper motor. but the circuits are "ON" without using the sensor. please help me..... can you teach me how to make it better. i mean can you teach me how to "on" the circuits with the sensor.
I edited the topic subject to something a little better. Just posting "help" doesn't really describe what is in the topic and peope tend to ignore topics with generic titles.
That said, you need a relay. The motor cannot be driven directly.