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- All power input connectors are 2-pin Molex Micro Fit (with the correct GND/PWR orientation)
- Unless higher current is required, under special circumstances
- Easy attachment point for an oscilloscope probe GND - test points with the 'test point' part from digikey work well
- Make sure there are enough GND test points!
- Headers and pins for all communication protocols - for now, 0.1" headers, to standardize on a debug connector
- I2C
- SPI
- etc
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- For 2-layer boards, all vias >= 0.3mm hole, 0.6mm diameter
- For 4-layer boards, all vias >= 0.2mm hole, 0.45mm diameter
- Make sure vias do not interfere with internal layers (DRC should catch this)
- Thermal vias should be small and numerous - we want the greatest surface area between planes as possible
- For critical power traces, use multiple vias in parallel to reduce inductance and resistance
- In general for vias, make the diameter 2x the size of the hole.
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- All components are labeled in a logical manner
- Maybe get someone else to look at it and make sure that they can follow the placement if any names had to be placed in weird orientations, etc.
- Connectors are labeled
- With function on top side (power input, CAN, Thermistor, etc.)
- With pinout on bottom side (or top side if possible)
- MSXIV Logo is on the board
- Correct board Rev is listed
- Pin 1 labeled on all ICs
- Ensure bottom silkscreen is mirrored
- Optional parts (such as CAN termination) is labeled
- Ensure all polarized components are labelled
- Double-check all of silkscreen in 3D mode
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- Ensure that all parts are in the BOM, and have Supplier part numbers - ideally manufacturer part numbers as well
- Ensure the no components are ordered on tape and reel
- This just increases cost for no reason (since we don't have a pick and place machine)
- Digikey part numbers that end in DKR usually have tape and reel - watch out for them!
- The BOM must be generated and all parts put on digikey to make sure everything is in stock
After Generating Gerbers
- Go to JLCPCB and upload the gerbers: https://jlcpcb.com/quote#/?orderType=1&stencilWidth=100&stencilLength=100&stencilCounts=5&stencilLayer=2&stencilPly=1.6&steelmeshSellingPriceRecordNum=A8256537-5522-491C-965C-646F5842AEC9&purchaseNumber=
- Make sure that JLC detects all layers and that the gerber viewer looks correct
- Upload the gerbers to the board sendouts page when available.
- Make sure the output files are in the GitHub branch and are well organized so that we can easily find the most recent rev
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