Using Eagle, I designed the board to be compact but with essential break out pads . I broke out 4 analog pins and 2 digital pins. The 4 Analog pins are great to drive the servos and sensors, I also included the USB jack just for power and a LED for debugging. You only need to solder the pins that you frequently use. I left ISP and FTDI pins exposed for programing.
You can download the Eagle drawing here. ATmega328-8mhz
I used http://fabmodules.org and Roland mill to create my board, using the 1/64 End mill to cut out the trace, and 1/32 to cut out the outlines (cutting the entire board out)
Trace with 1/64 end mill
Outline with 1/32 end mill
After milling out the trace and cutting out the board we are ready the stuff the board.
You will need FTDI cable, to program, get serial data and mainly provide power. You can also program with just AVR Programmer, but you will still need to provide your board power.
AVR ISP MKII Programmer (ISP, Xmega, TDI) to burn the boot loader.
AVR programer does not provide power.
#1. Here are the json URLs for all Mega & Attiny board with all sorts of processor speed (1, 8, 16, 20 mHz)
#2. Burn Boot Loader using your FabISP from previous class or AVR MII
All you need to program now is the FTDI cable, you can also use ISP pins to do all your programing and take out the FTDI cable all together (you might want to break out the TX/RX if yo wanna do serial tutorial communication)
Atmel ATMEGA328P-AU X1
10K Ohm Resistor X2
0 OhmResister X3
1µF Capacitors X1
0.1µF Capacitors X2
Total: Under $5
One stop shop
2×3 Male Pin Header
2×2 Male Pin Header
Male Pin, 1 Row: For FTDI
More Details at
You can also use FAB ISP and USB Tinny