All articles in 3D printing

Finding rotation speed using Arduino

Ooops, it’s been a while since I was last active here, sorry about that.

But to offer someting in retribution, here’s a device that can count revolutions or any other event that closes a switch, and tell you how many times that happens in a minute.

I have a need for this device, because I am building a dolly for timelapse images. The dolly has a 2m long worm screw that makes the dolly travel along an axis. If the trip takes, say, 3 hours, and the dolly carries a camera that is set to take an image every 5 seconds, we get a 3 x 60 x 20 image timelapse, ie. 4,800 images. With 25 images per second in a video, that gives you a 192 seconds, or, a little over 3 minute time lapse. During which the camera moves, you see, it’s not just a timelapse.

Continue reading Finding rotation speed using Arduino

Assembling a CoLiDo DIY 3D printer, part 1

Main parts
Main parts

As most of you know, I am not an engineer, despite my lofty ambitions of tinkering with all sorts of things.

So, the other day Jouko Lehtomäki from Suomen 3D-ratkaisut, the partner company of my university Haaga-Helia, brought us a brand new CoLiDo DIY printer in a crate. He said it’d be a piece of cake to assemble, and asked me to film a timelapse of the build. I fended off the task until one day I had no choice, I had to print something in PLA real quick, and the packed printer was the only one available. Continue reading Assembling a CoLiDo DIY 3D printer, part 1

Building a 2 way tiltable webcam stand

Hi again.

This time I thought I’d write up a little device I have put together with Arduino and printed parts so that I can point a webcam in two directions. (That’s the first use I thought of, after getting the idea of trying something with two 180° servos). To achieve this, I bought two potentiometers (adjustable resistors) and set up two servos to rotate the stand.

Here’s a little video of it in operation:

Continue reading Building a 2 way tiltable webcam stand