Hello,
This is a noob question but how would I replace the pushbutton on this circuit with a transistor like a BJT or MOSFET. Long strong short, I want the ability to trigger the latching circuit with an Arduino remotely and but also run independent of a MCU to reduce failure and be triggered by a liquid float switch (the button in this image)
Would it just be as simple as running the transistor in parallel to the button?
If you also want to keep the button then yes, run in parallel
yes I would still like to use the button/float switch. My main reason for posting this is I'm just trying to get my head around how it would work and trying to visualise it in a circuit diagram. I played around with a simulator and it couldn't get it working and got confused.
As theres a signal coming off pin 3 when ON I was unsure of how to orientate the transistor as it looked like the current flow flips depending on the state.
Also would there be a preference to using a BJT or a MOSFET in this situation. I have more MOSFET's available but unsure if I needed one or the other.
