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RE: Raspberry Pi Robots with Python
Another interesting application, do you know of relays or switches that could be controlled this way. Particularly, thinking of an extension of this idea could be applied to controlling an irrigation system of sorts in a greenhouse setting. Possibly opening and closing baffles for air flow as well. I suppose their are catalogs of parts that could be added here, sensors, switches, more.
Yes, relays work similarly and are simpler, they just don't switch as fast repeatedly but are ideal for things like irrigation. A relay takes power in and power out, then you connect a pin for the signal to turn the power on or off.