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Stepper motors (cnc, etc)

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Make Your Own DIY CNC. This instructable outlines the assembly process of my 2nd generation CNC machine which I designed to be simple to build and quiet enough to be apartment friendly.

Make Your Own DIY CNC

I have included example projects that I have made in the first two weeks of using the machine to demonstrate its capabilities. This is the second CNC machine that I have designed and built. My first machine was based off of oomlout’s instructable “How to make a Three Axis CNC Machine (Cheaply and Easily)” (by far my favorite instructable and the one that got me hooked on the site). It was moderately successful, cutting a number of parts from foam (a summary of parts made can be found on my abandoned blog here along with some build photos). The lack of overall stiffness and play in the linear mechanisms meant that plywood and plastics could not be cut effectively. 1) All of the drive mechanics are exposed. 2) The design has a low number of fabricated components and allows for low build tolerances. 3) Low operational noise.


Pocket laser engraver. I have been trying to get my hands on a laser cutter for some time but they always seem out of reach.

Pocket laser engraver.

All the great things that can be done with a real laser cutter tickle the imagination. I feel it's time to share my latest project - a low cost laser engraver,. The workspace is a bit small but none the less it works and comes so cheap that most will be able to replicate the result. I did take a few shortcuts, as I feel I don't have the knowledge to do all the electronics I opted for readymade but low cost in favor of trying to make my own (and most likely fail).

All parts used are however easy to find. I am pleased with the end result even if there is room for improvements. A word of warning is in place . DIY Laser Engraver / Cutter. If you ever wanted to do some laser engraving, this project might be of some interest to you.

DIY Laser Engraver / Cutter

The circuit is basically a variable voltage regulator that is powering a high power laser. I would highly recommend laser goggles when experimenting with devices like this. “This laser will immediately BURN AND CUT anything you put in front of it faster than a hot knife through soft butter. And, a laser is a light beam, so it will REFLECT OFF OF ANYTHING SHINY OR REFLECTIVE AND THEN BURN WHATEVER ELSE IS NOW IN ITS WAY. You’re not going to cut shiny foil or anything else that reflects light unless you want a quick trip to the Emergency Room. Put something under your work that won’t burn, or you don’t care about.

3D printers

Laser-Cut Wooden 4 Axis Positioning System. Cnc. EasyDriver Stepper Motor Driver. Description: The EasyDriver is a simple to use stepper motor driver, compatible with anything that can output a digital 0 to 5V pulse (or 0 to 3.3V pulse if you solder SJ2 closed on the EasyDriver).

EasyDriver Stepper Motor Driver

EasyDriver requires a 7V to 20V supply to power the motor and can power any voltage of stepper motor. The EasyDriver has an on board voltage regulator for the digital interface that can be set to 5V or 3.3V. Connect a 4-wire stepper motor and a microcontroller and you've got precision motor control! EasyDriver drives bi-polar motors, and motors wired as bi-polar. I.e. 4,6, or 8 wire stepper motors. This is the newest version of EasyDriver V4 co-designed with Brian Schmalz. Note: Do not connect or disconnect a motor while the driver is energized. Note: This product is a collaboration with Brian Schmalz. Features: Documents: Replaces: ROB-09402.