| This distinctive variation of a Christmas tree is made from a thin printed circuit board, which is cut in the shape of a spiral. This is...
More in General (1466)
| With the help of a quad opamp, a bi-color LED and a few passive components you can quickly build a simple signal level meter which has thr...
| For a change, this simple touch-sensitive switch does not operate by detecting the resistance of the skin between two points or measuring...
| Hell! I moved my control stick left and my model veers off right! And down is up! Here’s a simple solution to the problem.
| Circuits that automatically turn off battery powered equipment after a set period are commonplace. To promote good battery life it’s imp...
| According to Wikipedia, ‘A gadget is a small tool such as a machine that has a particular function, but is often thought of as a novelty.’...
| Frustrated by the lack of an affordable, portable hi-res screen for the Raspberry Pi, Alex Eames partnered up with Dave Mellor of Cyntech to...
| With stress a proven cause of various illnesses and afflictions various forms of ‘autogenic’ training as a means of relaxation have hit...
| For occasional measurements of digital circuits there is no need to get hold of a real logic analyzer. With the help of several ICs it’s po...
| There must be many PC users out there with an old USB keyboard kicking around in a junkbox somewhere. Maybe it’s got a mechanical fault you...