Electronics Design
I used the Eagle to design this board, base on original "Hello world board", add a button, LED and our logo on it. - Eagle
I try to use the "Tools >> Aotorouter" to ouput a png image but the circuits didn't very will. So I have to darwing it by hand.
I PS our "Fablab Beijing Logo" on it. I used the Web version Here is my parameters setting below:
Solder the Mini USB Header first . Solder the micorcontroller second . Solder the Crystal and capacitors . Solder 1k resistor . Solder two Diodes, attation please the diode has polarity. Solder Jumpers . Solder 6 pin programming header . Solder button Solder LEDs