Stepoko: Powered by grbl Hookup Guide

Contributors: MTaylor

Hardware: Overview

The Stepoko is a complicated board. First, let's take a look at the whole thing, then the various parts will be broken out by function and discussed.

Parts of the top side:

• LEDs
  • X, Y, Z Direction -- Denotes polarity of movement
  • X, Y, Z Step -- Flashes each time the associated channel steps
  • X, Y, Z Limit -- Illuminates when a stop switch is active
  • E-Stop -- Illuminates when the stop button is active (shows axis lock has been removed)
  • Probe -- Illuminates when probe switch is active
  • Step En -- Illuminates to show the controller is ready to step its axes
  • Power -- Illuminates when the bulk rail is energized. Shows when back emf is also charging the unpowered rail.
  • TX, RX -- Shows communication over the USB.
  • Reverse protection -- Illuminates when power has been connected backwards -- Remove power
• Axis connectors
• Switch connectors
• Switch active polarity switch
• Power connectors
• Uno-type 328p
  • Reset switch
  • USB connection
  • Pin Breakout
• Axis drivers -- DRV8811
  • Step switches
  • Heatsinks
• Power regulation
• Fan connection

Parts of the bottom side:

• Arduino pin map
• Arduino pin breakout
• Heatsink