February 3, 2013

SWR meter

Bought a "QRP-SWR-Meter" off ebay, but it didn't quite work as expected. So I designed a new circuit and built a prototype Manhattan style on a copper board. Pads are double sided PCB material soldered to the ground plane (works nicely, but I guess would be a pain to desolder).

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January 17, 2013

Mind Machine

In approximately five hours, we constructed a visual mind machine. It consists of hypnotic goggles (type "Ganesha") and a small aluminium box that contains a frequency generator controlling three red LEDs per eye. The blinking frequency can be adjusted between 3 Hz and 25 Hz by means of a potentiometer.

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February 24, 2013

My new soldering desk

A bit less chaos, maybe faster development – reasons to rebuild the soldering work place. Especially the solder iron stand is really nice, much fewer charred plastic parts on my desk!

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"Good enough is enemy of the best."
An old engineering saying, author unknown.