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DIY adjustable circle cutting jig for router made of plywood

Like every new router owner ever I am starting to need some jigs to make work easier and more creative. The first project in my mind needed a circle cutting jig. Here is my take on how to build adjustable circle cutting jig for a plunge router. I own a BochPOF 1400 ACE plunge router. It’s

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 clamp ideas 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

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