Once you add a power supply for your micro, connectors, and an enclosure, you'll probably be hitting the $50 mark, if not more.
You also need to be very, very careful when working with the mains. I wouldn't route a board that works with it unless you know exactly what you're doing.
It'll probably be easier than making Linux deal with your relay
At least on the Beagleboard, GPIOs show up as files that you can write 'high' and 'low' to, making it easy to switch relays.
You also need to be very, very careful when working with the mains. I wouldn't route a board that works with it unless you know exactly what you're doing.
At least on the Beagleboard, GPIOs show up as files that you can write 'high' and 'low' to, making it easy to switch relays.