Neumi

Open Source echo sounder / depth sounder / SONAR for bathymetry and research. Arduino based and compatible.

A relatively robust, simple, optical communication system built on Arduino.

Testing ADC performance of different popular microcontrollers.

An affordable Arduino-based board designed for straightforward (industrial) logic control, ideal for building small-scale automation and control solutions. FastLOGIC! is designed to cater to the automation needs of various small applications.