First project with micro controllers other than some of the tutorial ones.
I have a Groundfos UP15-29SF 115v AC circulating pump connected to my hot water heater. Ive already written some code on a Nodemcu v3 board that toggles 3.3 DC on from a web page. What hardware do I need (solenoids, capacitors, etc) to use that 3.3v to toggle on the pump.
I think i can just jump the N and L wires on the pump (correct me if you think there Is a better/more correct way I have not tried it yet) to turn it on.
A relay board contains both relay and controller interface. However the relay coil likely needs 5 or 12 volt. I don't remember 3.3 volt ones.
Fiddling with the phone now.
Goggle on Relay boards! Polulu, Ebay sell stuff like this.
Not entirely sure how that's relevant. Even if I wasn't I could hire someone who was and give them all the information/hardware and tell them to verify/do it for me.
It's the voltage of the logics, the digital output level, that counts, for communication. Make sure the board can use a 3.3 volt digital level.
Never use any controller 5 volt pin as power supply.
I would only add that I would consider using a SSR having a 3.0 to 30.0 volt control. Long as the SSR can handle the pump peak starting current. Quiet simple and a single part.
I finally found the pump specs. 0.12 HP, 2 pole single phase motor with 10uF/180 volt cap. So the cap will pull a large starting current if the AC cycle is just right.
