• Practical API design - JavaZone 2015

    Here is my talk I gave on JavaZone 2015 about Practical API design. Practical API design - Sebastian Dehne from JavaZone on Vimeo.


  • How to build a 22kW charging station + soft starter for a 25kVA transformer

    To enable faster charging of our EV, I needed 3 phase 400V. But in Norway, most houses only get 3 phase 230V (IT earthing system). In order to get 400V, a transformer is needed. In this project, you can see how I built my own 22kW charging station using a...


  • How to solder a thermal fuse

    For my next project, I needed to build in sme thermal protection which would cut off the power in case of overheating. The way to do that, is to use a thermal (cut off) fuse which is a one time use circuit breaker which disconnects the circuit once it reaches...


  • Smart phone controlled LED lamp

    I was meaning to put this up for quite a while now. Back in 2011, I designed and built a ceiling lamp which I wanted to share. Goal It started out when we wanted to improve the lighting situation in our living room and I was initially looking for an...


  • Garage door controller – part 2

    The finished PCB has arrived quite a while ago now and has been assembled as well. Time to upload the final part of this project to see some results. I selected Beta Layout as the PCB manufacturer for this project with quite satisfying results. I especially liked that they sent...