Hi, I am a software guy building embedded stuff that I deem meaningful. And then all the IoT stuff just for buzz.
To control my CNC machine to move the cutter downwards until it made electrical contact with my metallic milling table, I added an ATMEGA168 and a DAC inside of a Joystick, to create custom input signals.
Old graduation project: A demonstration of encrypting messages, decrypting messages and breaking RSA encryption on Atmel microcontrollers, with nice buttons and TFT. Obviously, the RSA keys were extremely bad...
Another old project, that was a copy of the "Time Fountain", that "froze" fluorescent water drops mid-air using stroboscope effects with UV LEDs.
I wanted that same setup in a matrix version, to create 3D images. <a href="https://derjulian.net/luciddrop"; target="_blank">https://derjulian.net/luciddrop</a>;
An old project that made it to HackADay: <a href="http://hackaday.com/2008/11/22/tennis-ball-fetcher/"; target="_blank">http://hackaday.com/2008/11/22/tennis-ball-fetcher/</a>;
With camera-tracking and Omniwheels, it was quite some fun: <a href="https://www.youtube.com/watch?v=HKDY3f4z3a4"; target="_blank">https://www.youtube.com/watch?v=HKDY3f4z3a4</a>;