And my Mini-uino boards, 1.3" square, with ICSP pins for downloading bootloader via FTDI Breakout, or Arduino as ISP, or Mdfly programmer.
Ground next to each IO pin aslo.
Need to install ATMega328P-AU, 16 MHz xtal, two 22 pf caps, 3 100nF caps, 10K resistor, header pins to suit your needs.
