Combine binary counting and laser pointer skills while checking progress on a web page spawned by an local Wi-Fi hotspot.. nice for CTF events

This puzzle takes a new view on the segregation of tasks. This puzzle takes more than one person to open a brand new ultrasonic lock. Used in CTF style event.

Lua based interactive firmware for ESP8266, ESP8285 and ESP32

Personal code, mostly for my YouTube channel

Measure a water hight beneath a house with an ultrasonic sensor and compensate for temperature (which is quite silly at those distances.. but it is just fun)

I2C device library collection for AVR/Arduino or other C++-based MCUs

Blackbox puzzel