The drunken history of theatrical fog effects
I'm guessing very few of you will have even heard of the vintage sal ammoniac haze pots. They weren't all…
Inside a very british ioniser. and how they fell out of favour.
I've always loved the slightly mystical technology of ionisers. When I was a kid I asked for one for Christmas…
How to use a uvc germicidal lamp safely.
It's become very clear that a lot of people have been buying UVC germicidal lamps from online sellers without really…
Live-build 3kv positive ion dust collector psu.
I think this might be the first live build I've done from the bench. It's a high voltage step up…
3kv test of cheap disco light with circuit analysis.
This light was generously sent by Aramus for our edutainment. It's a classic eBay/aliexpress/amazon special and actually usable for some…
Flickering blue led cast into glowing resin obelisk.
I've cast blue LEDs into glow in the dark resin in the past, buit after a recent video about using…
Ebay’s cheapest pile of crap usb rechargeable led head torch.
Who even came up with idea of a head torch that can't even be aimed into your field of view?…
Very useful led pin-spot light that is a good base for customisation.
I've looked at one of these before, and the only real change is the better choice of cable and the…
Radioactive health pen from ebay.
There's a certain irony when something is being sold as a way to protect yourself from harmful mobile phone radiation,…
Inside a uk compliant dusk sensor switch. with schematic
This unit is clearly made down to a price, but it still manages to be a good logical design. In…