I do not understand exactly everything you are explaining to me, I changed the connection of the transistor because it worked but indeed it was connected backwards.
I did some test with the base of the transistor and 1k ohm is already preventing operation.
I’m sorry I’m taking a long time because my health prevents me from concentrating at the moment (nothing serious, just binding ^^)
By copying onto a breadboard what I did on the components view, there is no problem. So I don’t quite understand. The 5v passes through the 2n2222 then puts the relay coil under tension with the GND on the other side. I put a diode as you had advised to avoid the return of the coil when it goes to OFF so why remove it now?
Yes I have to put a Maasedqais resistance of how many ohms so that it does not go below 12v?
I am really sorry for my dificulties in understanding between my lack of knowledge and the approximative translation problems of our friend google ^^
Here is where I am.Nouveau routage 5.fzz (76.8 KB)