All Boards

• OK HL Standard silkscreen requirements
  • OK HL All text right side up or 90 rotate if needed
  • OK HL All ref des same height (default 0.07")
  • OK HL No visible text under footprints
• OK HL All schematic symbols use consistent property "Catalog Number" i.e. for mfg part number
• OK HL Check hole size for terminal block (should be 2mm per drawing)
• OK HL Arrows for daughter board orientation
• OK HL Mounting holes
  • OK HL Confirm whether connected to GND or not
  • OK HL Confirm hole/pad size (pad size large enough for standoff/nut/screw head)
• OK HL Check ALL copper areas
  • OK HL proper coverage (completely surround thru-hole pads connected)
  • OK HL Reasonable width for current required
• OK HL Fill out PN/Supplier fields

Auxiliary Board

• 5V regulator
  • OK HL Check thermal requirements for estimated power dissipation
  • OK HL Check capacitor requirements
  • OK HL Make sure there is room for a heatsink and put it on the BOM
    • OK HL (add a heatsink part to schematic for BOM)
• OK HL Confirm with Brandon that the input is 12V
• OK HL Move traces away from mounting hole
• OK HL Check ALL copper areas
  • OK HL proper coverage (completely surround thru-hole pads connected)
  • OK HL Reasonable width for current required
• OK HL Expand 12V area across board at Y=2.5 in
• OK HL Move R1, R2 up a bit and align them
• OK HL Move P1..P6 references out from under PWM board outline
• OK HL Remove random via in SW corner of M4
• OK HL632 Standoff size
• OK HL Move MH out from under M3
• OK HL Heatsink on U2
  • flat package
  • OK HL move regulator
  • OK HL heatsink mounting hole connection
• OK HL RJ14 footprint

Motherboard

• Renumber references:
  • OK HL Male connectors (P1-P16 are perfect)
  • OK HL Resistor packs should be RP1...
  • OK HL USB and RJ-14 should be J1...
• OK HL Delete R6 and R7 from the design (A, B) go in parallel to the two RJ14 jacks
• OK HL Re-route (A, B) to run next to each other (they are a differential pair)
• OK HL Delete or hide the reference designators "MH1" etc on mounting holes on the silkscreen
• OK HL USB footprint has spacing errors
• RJ-14 footprint is wrong. Mechanical holes should be above signal holes with pin 1 in upper left.
• OK HL Hole size for power jumpers is wrong. See drawing for 952-2207-ND. Recommended hole size is 2mm.
• OK HL Change P/N for 16 pin headers (P1-P16) to increase height.

• OK HL Double check USB footprint
• OK HL Mark out rectangle on Arduino footprints to designate uUSB connector
• OK HL Bigger Pin 1 Markings on Daughterboards
• OK HL Change MH to 632 size (0.3 pad, 0.15 drill)

Pi hat

• OK HL Double check circuit
• OK HL Resistor Jumpers for direction signal
• OK HL Pi hat move RJ away from conn.
• OK HL rotate GPIO breakout headers
• OK HL label signals on headers

Vial Board

• OK HL no text cut off
• OK HL label thermistor
• OK HL Bring back ref. designators
• OK HL Change PWR/GND to +/-
• OK HL label IR LED
• OK HL Check header SS size
• OK HL Move R4 to the right
• OK HL Diagonal lines to PWM, TACH(FS?) labels
• OK HL Move header pin to the right
• OK HL Move ID text upwards
• OK HL Add row definitions (+/-) to both sides of header
• OK HL Add SS outline for Thermistor
• OK HL Thermistor DNP
• OK HL Delete D1, D2
• OK HL Move traces away from MH's
• OK HL Set R1 to 82
• OK HL Get R3 from Brandon