Mechanical solder paste dispenser – not a complete fail
I wanted to get an idea of the precision required to dispense tiny amounts of solder paste. Unfortunately, my local…
Quick and dirty 2.5v supercapacitor charger
My supercapacitor powered joule thief is a kind of stress-reliever. I play with it (replacing the supercap every few minutes)…
8-bit computer teardown and repair mostly cleaning
Firstly, a little guessing game - from what popular computer is this printed circuit board. Then, the keyboard barely works,…
10v led desk light from lidl – overclocked
Will this LED desk light from Lidl, supplied with a 10V mains PSU, survive being powered from my 13V solar…
Make a knight rider circuit on breadboard
Build the infamous Knight Rider scanning LED light on the front of the KITT car.
Julian’s electronics postbag: #115 – pink wedding leds
This is the video in which I open my post :) Huge thanks to the wonderful people who support my…
Very brief cos it’s cold garden update
One of my 80W solar panels fell off its frame last night - it must have been very windy. Also,…
Joule thief – new inductors – fewer turns
How many turns of wire are needed in the inductor of a Joule Thief?
Led traffic lights
An unusual implementation of LED traffic lights. This is a programmable unit employing a 2k byte CMOS static RAM chip…