Aldi ferrex cordless hot melt glue gun teardown
This hot melt glue gun was seized by security when I took it through as hand luggage (for safety!). They…
Very minimalist light sensor with flicker issue
Dave sent this for our exploration. It's a dusk sensor that was built into a wall mounting bulkhead light, but…
Mini meteor lights – with schematic
These are a super-minimalist version of the classic meteor shower Christmas lights. They are very simple and operate from about…
Inside a spliceline push in cable connector
A look at an alternative to the classic Wago style push-in wire connectors. The design is reassuringly simple, with what…
Can we fix a dead nebula projecting spaceman?
This unit is completely different from the other unit I looked at. It has different circuitry and a very odd…
High power ultraviolet led experiments
Some experiments to see how a selection of series capacitors affects the power dissipation and output of a 50W near-ultraviolet…
Inside a weird rechargeable silica gel dehumidifier
This very stylish dehumidifier branded Prem-I-Air (not a sponsor) consists of a base that blows a gentle stream of hot…
Speed camera stealth jammer teardown – with schematic
A very affordable device that jams any speed or red light camera, allowing you to floor it at all times…
2032 lithium cell charger with reverse polarity test
These USB powered chargers are only suitable for charging the LIR2032 rechargeable versions of the lithium button cells. Do not…
Inside a bumble ball – with schematic
The circuitry in this toy was more sophisticated than I was expecting. Mainly for safety and electrical interference reasons. These…