Despite my background in chemistry, I always had great interest in electronics in general. Never leave from time to time, return to do projects and build something electronic interest of the moment.The last project I drafted and built was the Sealer in late 2011 and was the last assembly Photoduino on April 2012. I think this electronic timer was the first seriously electronic object I did. In 1978, I made to control the exposure time for prints contact at a lab photo that was improvised. Works until today, I had to change some seven segment LED display that burned.

I wanted to build a CNC machine and this controller stepper motors. There’s an old IBM laptop that runs a program that interfaces with the controller.