Detecting a higher voltage on a Raspberry PI pin In a Raspberry PI application I made recently I wanted to detect if a 24 volts circuit was powered. As you probably know the Raspberry PI pins can only handle […]
Fun with Raspberry PI, Node.js and websockets I recently did a cool proof of concept; a raspberry PI running Nodje.js with a PIR sensor that emits messages if there is movement, and a Node.js webserver that serves […]
Aplifying stuff with an non-inverting op-amp Just a quick reminder note. I needed to amplify a CV trig signal from my Eurorack system because the Roland SH-09 needed more than 7,5 volts. I did a little […]
Arduino button class I’m currently working on power control and switching system for a model railway, and I was in the need of a good way to handle buttons, so I created a […]
Modernizing a vintage tv set Some friends of mine are starting a cafe whose interior style will be inspired by the the swedish fifties (“funkis”). She bought an old vintage television set and asked me […]
Driving a 12V led from a 5V Arduino pin Today i ordered some big illuminated arcade style push buttons for a project. Each button has a built-in led that should be powered with 12 volts, but the Arduino pins […]
Step Brother 16 Step Brother 16 was a DIY x0x-style step sequencer based on Arduino and Renoise that i designed and built a prototype of in 2011.
Metalphoto panel tryout I tried out having a front panel made using a technique called metalphoto. It’s a simple, cheap and extremely durable
DIY CV mixer design For practice and fun I made a design for the diy cv mixer I built previously using Synovatron´s kit and DinSync´s schematics. I have made a 10HP eurorack panel using […]