[sc:3dclub-intro] 3D printers are an exciting new technology just starting to gain a foothold in schools. Once built, a printer facilitates many creative endeavors and links to math, science, art, and more. Building a 3D printer is a great project…
To install the heated print bed for my reprap, I placed the PCB on top of the plywood top print plate (which is slightly larger than the PCB), clamped it in place, and then used the holes in the PCB…
OpenSCAD apparently doesn’t have an easy way to make an arc or wedge, or any way to do a partial rotate_extrude. This presented a problem when I started to design my Parametric Encoder Wheel, because in order for it to…
Well, I discovered that Popsicle is a brand name, so I’m officially renaming this little guy “StickBot” so the Popsicle police don’t come after me. To be clear, this little bot has nothing to do with Popsicle brand ice pops,…
Here’s a video of my very hackable 12-channel logic level shifter/translator with a voltage regulator. This video demonstrates how it works. There’s more detail here at the post. In this example, it’s translating from 7.5V to 3.3V. In another example…
40-pin female headers are inexpensive and easy to trim down to size, and with a dot of CA glue (super glue), you can even easily make other configurations, like 2×4. Sometimes they’re even described as “break-away” headers, although admittedly they…
The goal was to crawl on the cheap, and what’s cheaper than popsicle sticks craft sticks and fishing line? Next we’ll wire up a 555 circuit so it can roam untethered, but until then, here’s how to make one of your…
Here’s a list of common abbreviations for electronic components on circuit boards (PCBs). AE Aerial (antenna) B Battery BR Bridge rectifier C Capacitor D, CR Diode DSP Digital signal processor F Fuse FET Field effect transistor IC integrated circuit J…
If the hot shoe (flash mounting point) on your Canon Digital Rebel camera is loose, then your flash might not be stable on the camera or operate properly. It may not be immediately obvious how to fix it. This video…
Here’s a hot wire foam cutter that I made from scraps, following a general design I saw in Make magazine a couple years ago. I picked up 20 feet of 30-gauge nichrome (nickel chromium) wire on ebay for $2.09, shipping…