isaac / Music Player - History

Moved PLL to own sheet and more

- Moved to Micro USB for now
- Fixed most issues in main power supply

Time spent: 20 minutes

More minor changes

- Connected more of SDRAM
- Moved degug and trace into own sheet
- Moved SD Card into own sheet
- Added more TODOs

Time spent: 20 minutes

Added a few more missing signals

Time spent: 15 minutes

Progress on battery charger

TODO: confirm PROG[1..3] resistors are correct

Time spent: 15 mins

Added MIDI circuits. Started battery circuit

Added 5V Boost convert from single LiPo cell.

Added charge controller IC, but didn't wire it up.

Added a MIDI RX and TX path.

Forgot to verify analog output signal path

Time spent: 45 mins

Finished analog power supplies

Also worked on line out and headphone out.

Next:
- Use correct topologty so line out works.
- Wire up connectors

Time spent: 1Hr

Added LT3093 and LT3045 symbols

Placed symbols on new analog_power.sch sheet

Copied a a few rescued symbols to Music Player.sch

TODO: Clean up libraries, clean up symobls, asign footprints
for LDOs (and more)

Time Spent: 30 mins

Reserved more pins, and migrated to new KiCAD version

Time spent: 30 minutes

Moved DAC components to sub-sheet

Also:
- added some decoupling caps
- Researched differential outputs

Time spent: 20 minutes