Scrolling led matrix for a light festival.
This was a prototype for the Radiance festival of light which was held in Glasgow for a few years until…
10w led efficiency test with a defective led!
This was originally going to be a graphical demonstration of how LED efficiency goes down with increasing current, but instead…
20w vs 50w led lux test in a 20w floodlight.
New toy! A generic ebay Lux meter from China for testing light levels. I decided to test the two 20W…
Using a ccfl tester to drive neon tubes.
I found this CCFL test unit while I was looking at other CCFL drivers on ebay. It was sleeved in…
Testing a tiny little ccfl driver for laptop displays.
Yet another CCFL driver video. This little unit was sold as a generic replacement backlight driver for laptops and I…
Hacking a dual ccfl driver for higher lamp current.
Dual cold cathode inverters are quite commonly used for driving decorative tubes in PC cases, arcade games and cars. They…
Using a geiger counter on uranium glass and thorium mantles.
A quick demo of a netIO GC10 geiger counter on uranium glass (vaseline glass) and thorium mantles.
The diy tupperware waterproof led garden light.
This is a little module I made some time ago. It's designed to be used for temporary illumination of garden…
Testing external ipad microphones. loud audio in parts.
UPDATE. It turned out to be a faulty iPad with defective audio circuitry that resulted in quiet recording from the…
Refilling a pilot v sign pen with inkjet refill ink.
My favourite pen ran dry unexpectedly, and since I can't get another quickly I decided to try refilling it with…