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Known Issues

Beta Versions

Rev A (2024-05-21)

This is the very first revision, shipped to testers only.

Issues affecting the users

  • Wrong crystal fitted (12MHz instead of 8MHz). Choose 12 MHz in Klipper's make menuconfig. A paper label has been placed on the board to document the proper settings.

  • Reverse polarity protection circuit has been bypassed as reworking would've been too tedious.

  • Silkscreen for the RGB headers is flipped 180° (5V is GND and GND is 5V). Has been blackened out on the shipped out boards

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Issues that need to be reworked

  • Wrong footprint for the constant current mirror
  • Wrong footprint for the reverse polarity protection P-channel mosfet
  • Replace 4 pin input connector with an option for a 6 pin input connector, so that 12V and 5V can be supplied externally without the need for the on-board step-down converters - saves a bit of cost and the board can be provided in 2 variants, depending on the needs of the user

QoL issues

  • RGB indicator LEDs are very bright
  • RGB indicators should be channel 0,1 and 2,3 instead of 1,0 and 3,2
  • Silkscreen hardly readable in several places
  • Silkscreen should be rotated in one direction
  • RGB debug LED cutouts are not perfectly aligned
  • Step-Down Converters are very close to the RGB and extension headers

Production Issues

  • SMD fuse is very close to through-hole pin headers. Move fuse to make soldering easier
  • JST PH Holes are a bit too big, making the connectors fall out
  • Step-Down Converter holes are way too big
  • Step-Down Converters could be fixated in place by a drop of silicone, but there's little space to do so