This board.
Schematics & PL at Cross Roads Electronics
Bare boards $6 mailed to US locations.
Will acceot all these 40-pin DIP chips:
ATmega164A
ATmega164PA
ATmega324A
ATmega324PA
ATmega644A
ATmega644PA
ATmega1284
ATmega1284P
offboard FTDI module, or onboard MIKROE-483 module
http://www.mouser.com/ProductDetail/mikroElektronika/MIKROE-483/?qs=%2Fha2pyFaduhQ%2FrcyPs7PmGdeFG1B7qIuGl16liNH8Zb3mCcKALPhoQ%3D%3D (less expensive than offboard modules - i think Mouser also has the best prices on uCs)
