Re-organised top sheet. Lots of parts just changed their component designator. I had to patch up the PCB manually, but now it imports from the schematic OK. Also adds two PSU rails for the RTC (so you can pick DS1307 which is a 5V part, or MCP7940N which is a 3.3V part).

Changed LEDs to have NFET drivers. Moved power output header. Change TO-92 BJTs to SOT-23.

Use N-FETs to control case LEDs. Avoids putting 12V on STM32 I/O pin.

LED and Switch updates. Case LEDs are now driven by VDC and 1K. Allows higher Vf LEDs to work. Added 6mm buttons. Fiddled with tracking around CODEC. Change I2S pin ordering. Closes: #42 #60 #46

Merge pull request #86 from Neotron-Compute/change-battery-holder Swap to an Adam Tech battery holder.

Swap to an Adam Tech battery holder. Pretty sure it'll just fit on the Keystone 103 footprint so I didn't change it.

Merge pull request #85 from Neotron-Compute/feature/remove-cpl-parts PCB updates

Removed all CPL parts, and changed standby PSU. The Holtek was a SOT-89 that had a completely different pinout to every other SOT-89 3.3V LDO out there. To avoid confusion I wanted to replace it, but the only other basic JLCPCB parts were the AMS1117 (huge quiescent current) and something only rated to 7V input voltage (this LDO gets the full VDC in). So, I used a TO-92 footprint and picked an LP2950N. This, however, needs some ESR on the output cap, so I made that a 2.2uF electrolytic. I also removed the 2x 10uF output caps on the K7805 and set just one 22uF as specified in the datasheet.

Add I2C pull-ups. Also revised the Neotron Pico symbol to put all the GPIO on one side and all the GND at the bottom. Closes: #61

More PSU details in README