K40 RPI-CNC V1.0

by MrSurly.
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2 layer board of 0.91x1.50 inches (23.11x38.10 mm).
Shared on July 6th, 2016 04:38.

K40 Ribbon Cable to RPI-CNC adapter. Since the RPI-CNC has strong pull-ups on the limit switch inputs, this board uses transistors to invert and amplify the signal.

This board also breaks out the X-axis stepper pins.

Source (KiCAD)

BOM:

  • 1 TE connectivity 1-84534-2 connector
  • 2 3K3 0805 SMD resistors
  • 2 MMBT2222A SMD transistors
  • 1 1x2 0.1" pitch header [OPTIONAL]
  • 1 1x4 0.1" pitch header [OPTIONAL]
  • 1 0805 SMD capacitor (noise reduction) [OPTIONAL]

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