Category: Projects

  • Using Helmholtz Coils to measure the remanent magnetization of a permanent magnet

    Using Helmholtz Coils to measure the remanent magnetization of a permanent magnet

    While working on my first product for sale, the StackMag, I bought a lot of neodymium magnets. For the first batch, I ordered 50 magnets from Aliexpress. After gluing them all in place, I noticed that they were significantly weaker than expected. They should have been N35 grade which is basically the lowest you can […]

  • Hacked digital caliper writes measurements in Excel sheet

    Hacked digital caliper writes measurements in Excel sheet

    For my bachelor thesis I needed to take a lot of manual measurements with a caliper. As a side project I decided to spend some time on interfacing the caliper via a connection bus that basically every cheap caliper has. Most of the time they are just hidden and a hole needs to be drilled […]

  • Reinventing a magnetic toy – the Levitron

    Reinventing a magnetic toy – the Levitron

    Levitation is one of these things that everyone thinks is cool. As a kid, I already tried out many times finding the right arrangement of magnets so they would float on top of each other. Finding out that some mathematician already proved this to be impossible hundreds of years ago was quite disappointing (Earnshaw’s theorem). […]

  • Perdope – a double pendulum with too much electronics

    Perdope – a double pendulum with too much electronics

    After seeing a video by “Make Anything” about his double pendulum I was immediately fascinated by the pattern that it generated and I wanted to build this myself. He also made a 1-hour version with the pendulum swinging, but he had to start the movement again and again by hand and it was clearly visible […]