My new Nano breakout board (V3)
I have a new Nano breakout board.
Headers are included for all of the IO pins. It has room for pullup resistors for SDA (A4) and SCL (A5). The regulator space is for the 1117 LDO type 5v/1a. The regulator is optional and the VIN header goes to the VIN pin of the Nano and lets the onboard regulator do the powering. You will have to solder the jumper pad to use a regulator. If a regulator is not used, then VIN EXT can be used for external "V" pin header powering. This will allow for more power/voltage for servos or other devices.
The gerbers can be found here https://github.com/jscottb/pcbs along with others I have made.