Hi, I'm working on a power control for some of the devices in my room like computer, printer, amplifier, etc. The platform will be an AVR processor, because the unit will also do other things that reuiqre an AVR. The unit will have a primary power button which would shut the main AC power input. Each of the devices will have it's own switch. I want the AVR to "remember" which devices where on upon shut down of the system, and to turn them on the next time I will start the system. How can I do this? Thanks in advance very much!
Have the AVR shut the power off after you push a main off button. Have it save its data and then turn off the main relay.