Add button 2, LEDs, TVS diode
Add button 2, LEDs, TVS diode
* Add button 2; rewire to match the prototype
* Add a TVS diode across the 12V rail; value TBD
* Rework power nets into the power sheet; don't use the globals
inside the sheet, expose the rails as pins.
* Move power protection inside the power sheet.
* Add power LEDs