Hi all, I realized in a pattern on the internet using a toggle button and ne555 monostable mode so everything is ok. Now, I’d like to add the ability to simulate pressing using digitalWrite from Arduino (which could be very useful in many situations), and I thought to use the classic means of a transistor (which should act as a switch) but it does not work, the circuit is closed but not ‘clicks’ as if it were closed by pressing the button. I am a neophyte electronics and certainly do not have the appropriate knowledge on the operation about ne555 to make arguments like this, the problem is probably due to the logic of charging and discharging of the capacitor, i have attached schematic. I noticed that every time I press the button, the polarity of the two ends of the button are reversed and so I added a diode to avoid a short, this system would be fine (if it worked) only when the polarity of the terminals A and B (indicated in the diagram) were respectively + and -, and not the opposite. On a site I noticed that they use a relay to do something like that but I would avoid this solution.
what do you think?
Happy New Year to all.