so in short. I am building a redundant system of multiple atmega micro controllers.
The way it works is that they are all connected to a single bar, when the system is booted, the first micro controller will execute it's code and make the bar electrically charged. Once it has been, the system will shut down the universal power supply (The only that is powering all micro controllers at once) and only leave on the one that powers the micro controller that produced the signal.
If the first chip fails to produce the signal, because the second will try to produce a signal AFTER the first one, the second chip's power supply will be activated. Etc etc
The only problem I foresee is if micro controllers can fail and have all their digital pins turned on (Meaning that it would not be able to perform complex functions but would still leaving it's digital pins on)
So my question is, is this possible? Can a micro controller fail but still meet my power criteria. Thanks a lot!