Prototype board revisions

[VIPQualityPost]

• fix BOM from XL1509-5.0 to XL1509-ADJ
• determine why MCP I2C pullups are missing (turns out I placed two of each, somehow, and it did not make any ERC/DRC violation?
• increase trace width out of 5V/3V3 regulators
• User I2C port is vertical, find horizontal part and fix footprint
• 12V rail showing 4V when only plugged in via USB, determine if we need to fix this (jp identified as protection diode in XL1509)
• Adjust LED resistor values to match brightness across colors
• Fix silkscreen for logic-level signals on 3v3 breakout

[t0mpr1c3]

Apart from the trace width from the regulators, did you notice any thermal issues? I generally just throw in lots of vias and hope for the best.

[VIPQualityPost]

No, no thermal issues (yet). The total consumption is pretty low (we would need working FW to gauge accurately) and I can measure shunted current out of regulators later, but it's only a few hundred mA at most. But I set a net class for the thickness of the trace, and I would hate for the place that a trace to burn up would be right at the power supply becuase it was routed poorly...

[VIPQualityPost]

I think we can mark this closed since bringup is done, and instead handle the new requested changes in #38 .