I'd like your opinion if this is a feasible way to achieve my goal.
I'm powering a load (~1A) with 12V and switching it with a low side logic-level MOSFET connected to an Arduino digital out pin. I have a 220ohm resistor in mind between Arduino and the gate to prevent high currents, and a 10kOhm pull-down resistor to GND to ensure that the MOSFET is off should the Arduino not be powered.
I have the idea of adding a SPDT switch to be able to bypass the Arduino+MOSFET and effectively have the connection be always on. Even if the Arduino is completely removed from my circuit, I still want to be able to switch the load ON. Does this schematic make sense to achieve that effect?
I imagine that while switching, every so briefly the circuit will be disconnected. I don't want my load to shut down so I thought... add a capacitor? If this isn't a naive idea, what capacity would make sense?