Welcome to the N1IR Electronics Website. Totally off the cuff, one take, unrehearsed video projects for anyone interested in amateur radio, electronic design, makers, hardware hackers and science.


Get off you duff and build something!
Training the hand and mind since 1982.

Thursday, December 21, 2017

Project Camping Candle

This project was designed and built by one of my seniors, we wanted to make a fake candle using LED's.

We came up with two LM555 astable multivibrator oscillators at two different frequencies and diode OR'ing the outputs to an blue LED, these two frequencies would beat together and cause the flickering effect you see on the video below. The student designed the circuit in GEDA and made a PCB using Protel to the T-Tech 5000 PCB Milling Machine.

This proved our rapid design process, the whole circuit form conception to working product was done in under 6 hours.

 PCB one of a kind proto type


Candle in action