Of course. Let me know how you’re getting on.

The idea with the first valve is to drive it with an H-bridge. This allows for reversing polarity and is commonly used with motors to allow for spinning in two directions. This requires 4 MOSFETs. I’m not sure what type of MOSFET you are using but if you can find a simple dc motor to test this setup you can verify that it works with the one you have before you extend the circuit to an H-brigde configuration. This would be cheaper than buying another valve. You’d need two GPIO pins and careful design to not short circuiting the H-bridge.

So the setup you have is not going to work. Even if you managed to get the valve to engage, it’ll require a negative voltage pulse to disengage according to the specs you linked above.

Could you clarify a few things? The circle symbol is meant to represent the voltage supply? Is it connected correctly? When you say solenoid, you mean an electromagnet, right? If so, why does it require that specific pulse with? You say you swapped out the LED for the coil, was the LED tested with MOSFET and diode in place? Does the solenoid engage when you take the connection off the RP2040 and drive it high directly? How did you ascertain the functioning of the solenoid by means of measuring resistance?

That’s not uncommon in many other languages aside from German. Think of it as saving space(s).

Of all the things wrong with this, what sticks out to me how he seemed to be offended when you put down your boundaries. I feel sorry for your sister and i would share this with her. If he behaves like this with his own family, it doesn’t bode well outside of it. Yeah, perhaps replying wasn’t the best idea but i cannot put myself in your position vis-a-vis your state of mind at the time but it doesn’t take away the lack of appropriateness of his comments.

One day he was going on about Kiki, how she does things in a certain way and I kept him going by say how interesting it was. He then turned to me and asked “You know that Kiki isn’t real, right, I made her up?”. He doesn’t like lying or being lied to, so within that frame I guess he wanted me to confirm that it was just play.

Our child has one. Her name is Kiki and she lives on a farm where she drives her tractors in a village called Plamplams. She speaks also an imaginary language. It seems like she represents experience he lives through vicariously expressing some image he has on how he fits in this world. We as his parents have always encouraged him; it is wonderful how he develops such creative images.