Fantastic uv photochromic powder
These amazing pigment powders change from white to a colour when exposed to UV or near-UV light, and then gradually…
Chinese factory lamp base crimper
This is one of those weird things that you can get from AliExpress. It's one of the crimping tools you…
Testing a uv/uvc test card
I'm not sure how widely these were available before the pandemic, but they're now all over eBay due to the…
Moonshine vs sodastream – with science!
Having already discovered that white wine takes twice as much carbonation as water, I thought I'd push it to the…
Best side-glow fibre optic i’ve seen
Given that these came from a pound shop (UK dollar store) I wasn't expecting too much, even if they did…
Inside a huge faulty poundland lamp
I traded my brand new huge Poundland lamp with a local friend for his very dead and moist looking one…
Inside a wago connector and a clone
Wago terminals are here to stay. They have a long history, make easy, good connections and avoid issues with over…
Unusual masonlite neon tube psu with schematic
Masonlite was an iconic British supplier of neon equipment when the neon sign industry was at its peak. I think…
Inside a big pink lamp with schematic
I had high hopes that this lamp may actually have used LEDs that had their output colour chosen to match…
Fixing a faulty tachometer
As components get smaller and smaller I'm seeing an increase in a specific failure mode where equipment dies with a…