Stable climate in greenhouse: Temperature controlled windows of greenhouse and monitoring of humidity, light, rain and temperature.

Modded my daughter's Fisher Price Sea Turtle toy to play custom audio files.

Yes it is, but this one has Bluetooth and other great features!

Saving my parents marriage (metaphorically speaking).

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

Sniff-out the real tooter.

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.

It has some LEDs inside something that refracts.