[CNC router] How I connect two boards for a spindle with Marlin

#diy #3dprinting #cncrouter #marlin #cnc #spindle #speedometer #tachometer
This episode is the 2nd video of the Marlin setup for the spindle.

The 1st episode of CNC router marlin setup
https://youtu.be/xaSNTNoWYAQ

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