PCB v2

[andrewerrington]

A list of things to consider after PCB v1 has been made and tested.

1 add polarity symbol next to PSU input socket.
2 add footprint for HAT EEPROM, probably on underside of board.

[andrewerrington]

Add drawings to relay silk screen to show coil and contact configuration.

[andrewerrington]

Consider adding support for shutdown button on pin 5.

[andrewerrington]

Add polarity indication on fan header: +FAN-

[andrewerrington]

Rotate R44 & R43 180°.
Move Q1 away from P6 (FAN).
More space around U5.
Move U1 U2 U3 U4 labels outside footprint.

[andrewerrington]

Move C6 parallel to C7.

[andrewerrington]

Move R26 text on silkscreen for visibility.

[andrewerrington]

Add voltage to 10u cap in BOM.
Add package size to trimmers in BOM.
Add lead spacing to other caps in BOM.

[andrewerrington]

Consider swapping D2 and D3 GPIO pins to make contiguous group of four IOs.

[andrewerrington]

Consider placing sense inputs on 0.1" spacing if they aren't already.