Motherboard Notes 18 Feb 2016 Size / shape of board Positronic Mixed Density Connectors Drop Wt PIC 5 June 2014 Possibly use: INA226 for current monitoring ( I2C) ChipCap 2 for Humidity and Temp Sensing ( I2C ) Honeywell TruStability for Pressure ( I2C ) Murata BNX023-01 for filtering MAX3250 for RS232 - iso 3DM-Gx4-45 Questions: Is the " Power On Clear to CPU Card Keyboard " necessary ? What PIC to use ?