I'm looking for a design for a very very cheap power supply for use with an atmega 328. Basically, I want 7vdc (will drop to 5v with a LM7805) and up to about 140mA from a 110/120vac mains. My components need 80mA on paper and I want a little headroom.
I realize that cap based power supplies are not isolated, but the project has inexpensive components so I'm not concerned. The plans I find online are only good for about 1/2 the current I could draw.
Any help appreciated greatly! Thanks