Hi! I want to control a 0.5 hp water pump for a sprinkler system using esp32. I tried searching online how to do it but all i see are the small 12v dc motor pumps being used.
This is the water pump that im planning to buy.
What relay module should i use and how can i control the on/off using esp32?
Great add for a pump lousy for electrical information. For single phase motors like this I use solid state relays with zero cross. They are not that expensive and I do not have to fight the EMI from the contacts. I place the relay in a metal grounded box and use metal jacketed cable or condulet. Use at least a 25 amp relay.
Yes, a lousy advertisement. But, notice it is a booster pump, meaning it is not self priming. But then they say it has suction. But that only can happen after the pump is primed, but you probably already know that.
If you use a solid state relay, you need to have a good heat sink because the relay will get hot. That is why they have an aluminum mounting plate.
i appreciate the reply. The water pump will be used for supplying the water for the sprinklers from a rain reservoir. Does a self priming water pump work better for it?
I would use a contactor like this link:
Contactor
And an SSR module to switch the coil voltage.
SSR module
Will the pump be mounted higher than the reservoir?
No, it is beside the rain reservoir.
Can you explain the purpose of this contactor? Thank you❤️
So, the pump will always have water above it's suction port?
Can you post a diagram?
The advertisement claims a 6 meter "suction force", so it may not be a centrifugal pump and may be able to lift water a few meters.
Should be OK (IMHO).
It is only intended for sprinklers. And also, the water comes from a rain reservoir tank right beside it. Would it be sufficient for that intended purpose?
Can you elaborate more on this and how the wiring diagram should go? I just want to be able to turn the water pump on/off using my mobile phone with esp32. Thanks for the response
Would it not be important for your mobile phone to KNOW if the pump was on or off before you turned it off? Or if it actually turned on or off when you commanded it?
If you can turn an LED on/off with an ESP32 and your mobile then you have your work cut out for you.
(An LED on the one hand and a low current relay to turn on a high current contactor to turn on a sprinkler pump, on the other, are basically the prospect.)
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