Aren't they stunning?

Landje Robot is an fully open source STEM robot. It deviates in two aspects from many other builds. See here where...

A cap used to detect and notify you if someone from behind comes closer to you in offices, grocery shops, public transport places, etc.

Open a garage door using only hand gestures!

Make it play "La Cucaracha" when your door closes

Our Gnome is ready to follow you in your travels and keep track of all the places you visit, thanks to a GPS shield and the Nano Every.

It has some LEDs inside something that refracts.

Use your Arduino board and drive as many nixie tubes you want.

This stroboscope is a precise and versatile instrument which can be used to analyze periodic or fast motions.

A flexible, extensible platform for COVID-19 testing - quick and easy detection and tracing in the developing world using CRISPR tests.

Data logging from two electricity meters (type "eHZ") simultaneously and store data (time and value of reading) to an SD card.

A physical and portable LED sign in the shape of the Astralis logo.

This is my Clyon Raider kit to which I added Arduino controlled internal lighting.

Two stepper motors and an Arduino to turn around an SMD part.

Saving my parents marriage (metaphorically speaking).