Countdown Timer Answered
Hey guys, first forum post.
I have just gotten into the electronics field, and I have made a few circuits that I have read schematics from. There's something I want to make, and it's a countdown timer.
This is want I want it to have:
Be able to count down from at least 15 seconds and be able to change the amount of time
Have some 7 segment displays
Use the least amount of voltage possible (ie: not need to use the mains or some 12 volt power supply, id rather use a couple of AA's)
Have a relay capable of turning on or off a light.
And to be as simple as possible.
Because I am rather new to this I would rather a schematic, rather than just some help on which components I need to use, because I don't know where they need to solder to where.