Category Archives: CNC - Page 16

CNC Light Painting: First Attempt

backwards "J" light paintingAfter buying a Canon T2i camera a few months ago, I’ve been really excited to play around with different exposure settings and possibly some time-lapse photography.  The first trick that I’ve tried is something called “light painting.”  How this works is that your camera is held still and a light is moved around with the shutter open.  With the lens open it captures this light wherever it moves in the frame.  Alternatively, the camera can be moved around a light.

The photo to the right was made by moving the camera, but my idea was do light painting by moving the light.  As with making stencils for a bleach t-shirt, I don’t necessarily feel I have that much artistic skill, but I do own something that allows me to fake it, my CNC router.  The idea that I had was to attach a light to the X and Z axis and allow it to either be controlled manually or run a Gcode program Read more »

Swap the Y and Z Axes on a CNC router with Mach3

reverse Y and Z axes in Mach3For an upcoming project I needed to swap the Y and Z Axes on my CNC router.  There are two ways to accomplish this.

The first way is to go into the text editor on your Gcode after your CAM software generates it and do a “replace” command.  Replace Y with Z and vice versa.  Since you’re replacing one with the other, you’ll have to first replace Y or Z with another letter (like A or B) so you don’t end up with two Y’s or Z’s.  Replace this interim letter or symbol again with the actual letter you want (See this ZTW forum discussion).

The second, and best IMO, way to do this would be to swap the axes in your control software, Mach3 in this case.  In Mach3, just Read more »

Ultimate LED Nerd Glasses: Part 3 – Mechanical and PCB Construction

Wnerd glasses with LEDs on it with no tapehen building something like this, the first question I ask myself is “how can I avoid making the wires into a rat’s nest?”  OK, maybe that’s not true if you look back at such projects as the Pegleg Hexapod or Boxie the Creepster.  However, this was a wearable hack and has a very limited space to work with, so wires going everywhere on one’s forehead wasn’t really what I had in mind.

Instead of wires running everywhere, I decided to make my own CNC-routed PCB.  What it amounts to is three separate lines of copper cut to approximately fit the bridge section of the glases in question.  I measured everything and used Draftsight (see my Windows DS review) to draw the approximate shape with lines separating it into three isolated sections.  The middle will act as ground and the top and bottom section act as the positive for each set of LEDs.  It turned out better than I expected, and is mostly covered by the glasses.

From Amazon: Nerd Glasses Buddy Wayfarer Black Frame Clear Lens

I have no idea what brand or make the glasses that I used were, but I’ve listed a link above to some that are similarly styled from Amazon.  I’ve also listed Read more »