It is a USB charger that turn complacently off after 3.5 hours. After one presses the power button (the red one) a relay is turned ON and...

A simple 3d printed Magic Wand. The images are not very good, nevertheless the school children found it funny.

For a small project, I needed a rectangular pulse generator that could generate positive and negative voltage pulses. These...

I was planning to build a 8x8x8 RGB LED matrix, however due to several complications only the half was finished. The frame is 3d printed...

At the moment the FDM 3d printing industry is moving towards 2 print head system, or it is already there. The main issue with this...