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How to run two CNC shields (other one as clone) with one Arduino UNO

I learned a nice thing about Arduino CNC shield today. I have a project coming up where I need 3 axes. On each axis, there will be 2 motors (cloned, running in sync). That means I need a total of 6 motors and drives, but CNC shield only supports 4 drives (axes). So I needed

Gallery of timing belt clamp ideas for linear motion

There are several ways to clamp open loop timing belt ends together. Here are some of them gathered into one post with images and some with comments. Most of them here are for GT2 belts, but some ideas work for others too. A quick overview to get ideas flowing and images for quick reference. It

Wiring and running TB6600 stepper driver with Arduino

A quick post about wiring TB6600 stepper driver which is based on TB6600HG chip. Here I use one without black plastic casing. It has model marking on the back that says “BL-TB6600-v1.2″. Stepper motor used in this demo is 23HS22-2804S (2.8A, NEMA23). Drive looks like this and it’s rated for 4.5A. Looking for more info and photos?

How to use H-bridge HG7881 (HG7881CP) module with external power supply and Arduino UNO

First-time use of H-bridge HG7881 (HG7881CP) module was pretty confusing for me. I didn’t find good (if any?) information about wiring this module up and running it with Arduino. But same time it seems to be quite popular. Here I share how I connected it to an external 12V power supply. You can use any other voltage

Arduino CNC shield version 3.0 with GRBL v0.9

My experience with arduino cnc shield was bit frustrating at start. This article is about version v3.0 CNC shield. I didn't know anything about this shield, GRBL software and how gcode is sent to CNC machine. So I was pretty unsure about everything I was doing.

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