Build units for Rev A

[fluffy]

• [ ] Cut box windows
• [x] Glue in box windows
• [ ] Solder display to blink boards
• [x] Solder headers & Osc
• [x] Engrave labels
• [x] Init flash and firmware
• [ ] Rough Calibration
• [x] Assemble box
• [ ] Burn in
• [ ] Final Calbration
• [ ] Final Test