I am wondering if someone has a nice simple solution for a battery backup picaxe.
What I'm after is a picaxe controller that runs of a mains power supply (ie. not running batteries flat), but if mains fails the controller will retain a set point and just simply resume as normal if the mains returns. I'm guessing the battery backup could be rechargables, but might also be a watch type battery that provides a failsafe. It doesn't need to be too complex, just be capable of maintaining a setpoint for a few hours as a worst case.
Any ideas?
thanks, Arnie
What I'm after is a picaxe controller that runs of a mains power supply (ie. not running batteries flat), but if mains fails the controller will retain a set point and just simply resume as normal if the mains returns. I'm guessing the battery backup could be rechargables, but might also be a watch type battery that provides a failsafe. It doesn't need to be too complex, just be capable of maintaining a setpoint for a few hours as a worst case.
Any ideas?
thanks, Arnie