I ordered some MOSFETs today and I also ordered some relays, will try both and see what sticks.

Thank you all for your help, love the community.

Yep I have done that but 12volts seems to be too much for the boost convertor on 3.7v input, so I have ordered some stronger lipos and serial them to see if high voltage helps or parallel them to see if its current. I am going to buck convert down if needed for the esp32. At least its working now th...

Thanks for the reply, I will go back to trying to get the transistor switch working, need to do a bit of reading on what resistor to use in line with the transistor (222A i think I have).

Hi, I have an esp32 linked up to a 3.7 1200 mAh lipo, I then have a buck boost converter attached to gnd and pin 5, to the other end of the buck boost converter i have a 12v solenoid 300 mA. The buck is configured to convert the input voltage to 12 volts, which on measuring works fine. In software I...