Arduino relay control

259

02:41:09

For a solar powered irrigation system. Lamps represent solenoid valves. Still working on it so any advice appreciated. Can code but electrical theory not so great ;)

published 8 years ago

KE4CPC

8 years ago

You can adjust your speed to simulate real-time. Currently it's set to about 10ms/s. Also you can adjust your lamp settings to simulate the lamp you are using, however you are suggesting they are sprinkler solenoid rather than lamps. With Arduino you might choose to use a FET or even a high power bipolar transistor to drive the solenoid rather than using a relay, it's far more efficient. But should you decide to use a relay, do put a diode, such as a 1N1001 in reverse across the relay coil to prevent the backlash that comes with it. The same goes for your sprinkler solenoids.

KE4CPC

8 years ago

Heres a circuit to demonstrate the example I was giving: http://everycircuit.com/circuit/5296675951476736

nim73

8 years ago

I can definitely see the advantages of using a transistor instead, your example is perfect, thank you - off to read up for a bit!

ciberjuanjo

8 years ago

Sin diodos en los reles arduino craaaaak bye bye

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