Rev 1 Schematic and BOM

[codeThatThinks]

Combine all subsystem schematics into one complete KiCAD project. Generate a BOM.

[codeThatThinks]

TODO before design review:

• [x] Microcontroller pin assignments
• [x] Finish adjustable regulator design
• [x] Level Shifter I/O pull-up/pull-down resistors
• [x] LEDs on microcontroller I/O to level shifter
• [x] Choose a connector for I/O pin connection to target device
• [x] Choose indicator LEDs for power rails, calculate resistor values
• [x] Add fuse or current shunt on main power input?
• [x] Add fuse on target device power output
• [x] Add test points for UART and built-in USB on microcontroller
• [x] Buffer on microcontroller DAC output for adjustable regulator

[codeThatThinks]

For rev 1, we can just go with a 0.1" female header. We can explore other connector possibilities for rev 2.

[codeThatThinks]

Minor schematic issues have been fixed. A FET was added on the power input circuit so that the DC jack is always used instead of USB whenever it is plugged in (before it was whichever was higher voltage).

The SPDT switch on the level shifter input circuit was replaced with a part that actually has a +/-15V operating voltage range.

Component values were updated and schematic text was revised.

[codeThatThinks]

The BOM is complete and the schematic is ready for a design review.