For 3 years I started an investigation in the field of ultra low power pulse motors. The first project was the Donut Motor with a 3V button cell as power supply. In 2019 more motors and pendulums were made and the technique became more refined. In the summer I started projects to run the motors continuously on solar energy. No battery, only a supercapacitor is used as energy storage. This website is published by Berto Aussems from Maastricht NL.