Working mode: positive pulse open valve, negative pulse off

[donburch888 (Don Burch)]

I have located a Latching Solenoid Valve with specifications including:

• Working voltage: DC 4.5V
• Working mode: positive pulse open valve, negative pulse off
• Pulse width: 30ms

Is there an existing module which can connect to ESP32 and provide +ve and -ve pulses ? I'm not into electronics (and at 66 not here to become a professional electronics engineer) and I don't trust my soldering - so an off-the-shelf module would be preferable.

I have been trying to figure this out but need a hint, or preferably a pointer to a explanation/tutorial.

Thanks in advance

[IOT7712]

Two wires. When it is positive, it is on. When it is not positive, it is off?

High inrush current. Kept open/closed by water pressure.

Sounds a bit different to what you want for battery operation.

ESP32 reboots when reading voltage from INA219

I'm not sure whether I have faulty hardware or have missed something in the configuration... I am adding a water sprinkler to my greenhouse ESP32. The solenoid is 12V but adafruit advise it works down to 6V. I don't want to drain my main LiPo by holding the solenoid open so thought I would use a common 9V battery for this - and of course to monitor the 9V battery voltage. I already have an INA3221 monitoring my LiPo voltage, and the INA3221 states it works up to 26V, so have wired it all up …

Thought it looked a bit familiar - why not continue in your existing thread?