[really need help] Our projet

[Civiziled]

Hi everyone, I have a problem with my project that I'm about to finalize.

I have a Raspberry pi 400 and cables and valves with 3 pins, and the problem is that how can I know if the valves send a signal through the GPIO, here is an example.


https://prnt.sc/QAcgCIvC5HBC
https://prnt.sc/Y2JIJ16Z4Jih
https://prnt.sc/4gIz3NXW9an3

I could really use some help as I've been trying to find a solution for weeks and it's a project for school, thanks!

[mahjongg]

The picture shown in https://prnt.sc/QAcgCIvC5HBC is NOT a "3-pin valve", but a simple Single-pole dual-throw micro switch.
so I'm not able to help, as I don't get what you want to do.

also valves are electrically operated valves, they do not "send a signal"

instead they are operated with an electrical signal, but as this signal needs to power the valve and the PI (any kind of pi even the Pico) only controls a minute signal (3,3Volt, about 10mA max) a "driver IC" is needed to convert the logical signal out of a GPIO pin to a signal that can drive the valve.

[ame]

The picture shown in https://prnt.sc/QAcgCIvC5HBC is NOT a "3-pin valve", but a simple Single-pole dual-throw micro switch.
so I'm not able to help, as I don't get what you want to do.

also valves are electrically operated valves, they do not

It is possible that OP is not a native English speaker and has made a minor mistake. A switch is essentially a valve for electric current.

What OP probably needs is some basic information, like this:
https://www.circuitbasics.com/how-to-se ... pberry-pi/

[W. H. Heydt]

It is possible that OP is not a native English speaker and has made a minor mistake. A switch is essentially a valve for electric current.

In that case, one would expect the "valve" to be what is called a vacuum tube on my side of the Pond. And, if so, its operating voltages are *way* different from anything that should be connected directly to a Pi.

[ame]

It is possible that OP is not a native English speaker and has made a minor mistake. A switch is essentially a valve for electric current.

In that case, one would expect the "valve" to be what is called a vacuum tube on my side of the Pond.

No, one wouldn't.

[thradtke]

I have a Raspberry pi 400 and cables and valves with 3 pins, and the problem is that how can I know if the valves send a signal through the GPIO, here is an example.

Here's an example in Python:

https://youtu.be/pXouJLbG0PA