Simple nimh battery charger with pcb files
A gloriously dumb USB powered NiMH and NiCad battery charger that will guarantee a full charge every time, but only…
High voltage sign leds
A look at some 220-240V LED sign illumination modules. If you want to see what they look like inside, the…
Inside a high voltage led
A look through a microscope at a high voltage 24-LED array in a tiny 2835 style package. Quick correction, I…
Fast-print tool battery connector
This 3D printed battery connector is for a very common cheap power tool battery sold in Europe. It goes by…
Simplest ryobi and parkside battery connectors
I got the urge to make a battery connector that fits on my Ryobi or Parkside power tool batteries. Thingiverse…
Resistor firework fuse ignition
A very cheap way to remotely light wireworks. Use a quarter watt, 10 ohm, carbon film resistor. When 12V is…
2w resistor burnout
A 2 Watt carbon film resistor being overloaded with 27W for your viewing pleasure.
Foot kittens
Just kittens on my feet. They seem to like it there. The kittens have their own channel here:- https://www.youtube.com/channel/UCSNCFCglLxZzeEdEErBxT6A
Ip65 led tape coating fail
I was using this tape above my computer for ambient illumination. Over time it imperceivably changed from warm white light…
240v led sign module teardown with schematic
These strings of LED modules are commonly used for illumination in signage with 12V and 24V power supplies. But these…