Digital Volt Meters from Santa's workshop
I don’t know if you follow the Engineer in Wonderland series on Electro-ramblings, but when Alice gets into the workshop the content is worth sharing – consider Alice an uber-Gadget Master!
Test and measurement
How to build your own Geiger Counter
Here’s a very interesting project, with a very worthy motive behind it, reports Technabob. Some engineers at Libelium, a wireless sensor network company, decided to help the people of Japan, around Fukushima, determine levels of radiation for themselves.
Dangerous laser pointer? Find out at home
Poorly-made green laser pointers can damage you eyesight, and mighty US tech lab NIST has devised a home table top experiment to help separate the dangerous from good.
Shaping waveforms gets turntable in a spin
A reader writes that he had a need to generate a single cycle of a very low frequency near sign wave, which was to be used to test software that measured the parameters of a waveform generated by a sensor.
iPhone app reads your PicoScope
Video: Testing is a crucial part of the development cycle, as any gadget master will have suffered, and here’s a cool app to help the process, when you find yourself turning to use a PicoScope.
Video: MCU turns the gears of time
This great looking gear clock tells the time in a unique way. A PIC 16F628A microcontroller with an external 20MHz crystal oscillator times a stepper gear, which drives a minute display, which also drives an hour display…
Hotbox temperature logger
Here’s a great project, recommended to Gadget Master by our own indomitable device-builder, EW’s Technology Editor Steve Bush. It’s the Hotbox temperature logger.
Richard had a flash of inspiration
Now he’s got the power to cut lightning down to size People have always been fascinated by the fury of the heavens. Electronics prodigy Richard Hodgkinson created a lightning distance timer so he would no longer have to manually calculate the approach or retreat of a thunderstorm. He recycled…