Two weeks ago, I set off to a business trip to Germany, which is also my home country. I always try to have a few days of vacation included in such a trip in order to be able to visit my family. And what does a father with his son living in another country...
Here's a video of the project:Here is a diagram of the main components:The system is comprised by a computer, a webcam and a video projector. The camera is placed on the ceiling, above the pool table. It's very important that the camera is positioned...
Fermentation control is probably the most important aspect of brewing good beer. You can make incredible wort, but if you ferment it wrong it's not going to taste like you want it to. By properly controlling fermentation you're controlling the most important...
I've wanted to build my own amp for quite a while. For bass guitar, the selection of amplifiers you can buy is pretty lack-luster, and mid-volume studio amps are hard to find. It seems like most of what's available is either a practice amp or a stadium...
When a visitor to our site requests to control Sid our Node.js server adds them to the queue. When it's their turn they send movement commands and receive feedback in realtime using socket.io. These commands are relayed from Node.js to the Rapsberry...
HydraBus v1.0 Rev1.5 In Stock on DigiKey:https://www.digikey.com/en/products/detail/benjamin-vernoux/hydrabus-v1/15652912 Features of the HydraBus board: Very small board only 60mm x 37mm size (extensible with shield which can be connected on top or...
The MeArm is an Open Sourced Robot Arm. It's small, like pocket sized and that's for a reason. It can be cut entirely from an A4 (or more accurately 300x200mm) sheet of acrylic and built with 4 cheap hobby servos. It's live on our site for about $35...
A bendulum is topped with a weight. If you give the top a push, it sways back and forth periodically. The motion is much like a pendulum, except that instead of swinging rigidly from a pivot and moving the most at the bottom, the bendulum’s stem flexes...
So, where I stand now. I ended up using a Mesa 5i25 PCI card and a 7i76 step/dir control card. The Yaskawa servos have pretty good auto tune so I decided to leave the PID loop up to the servo drives.Speaking of servo drives, that and the servo motors...
I picked up the vacuum system from Portland State two weeks ago from a professor I know. It was too big for the little things they do and by the time it warms up and pumps down there is no time left. So they decided to get rid of this system and build...
14.03.2014. I must admit that I was partially wrong. We just tried a more powerful stun gun 800,000 volts. We installed two sewing needles on it and pierced the carbon tape. On the needles remained voltage of about 150 volts. The person will feel the...
In the original configuration, the airswimmer is propelled by the tail fin, which can be flapped left-to-right using the remote. The whole fish can also be tilted up or down by moving the gondola, which holds the battery and receiver, forward and back...
IntroductionVaporization is done by off-the-shelf ultrasonic atomizers, either really cheap ones (the black ones in the picture below, 2.50 $ each) or some more rigid ones (the silver one, a Fogstar 300, 290 € each), air is moved by an array of...
The first thing I noticed is that by twisting the line until it self-coils into a tight spiral doesn't work very well, since the tight coil doesn't have much room to stretch out and retract like a spring. What I did was twist the line to the point just...
I've been busy with other projects, summer and the day job, but here's an update on the Pinstax. After weeks of perking this project through my brain, I enjoyed some frenzied productivity as ideas came to 3D printed reality. One of the problems...