XO4 A2 B1 Changes
These are the changes planned for the XO-4 B1 prototype, from the A2 prototypes.
Contents
A2 Electrical Fixes
These changes fix problems in the A2 prototypes:
For now, see XO-4 A2 ECOs
A2 Layout Fixes
Planned Feature Changes
Add second serial port
Connect UART 1 up to a serial connector. As it is a +1.8V signal, add a level translator on the output signal and a voltage divider on the input. This can be depopulated for production.
