QRP and homebrew by DL2YEO
2021-11-09
“My name is Udo and I am living in the small village called Spenge, about 15 km north of Bielefeld. The DARC radio club is ‘OV Widukind – N59’ andRead More
David Jones -Tronnort Technology
2021-10-01
PCB Design Tutorial – As published in Silicon Chip magazine Oct-Dec 2003. A very comprehensive three part tutorial on how to professionally design and lay out PCBs. Learn all theRead More
Science Hobbyist – Amateur Science
2021-09-07
Amateur Science, Cool Science, Gravity, Energy, Fusion, Tesla Coil Page. Neodymium Supermagnets, Science Toys. Significantly Worthwhile Books, Science Fair Ideas, Science Demos Articles, Experiments, Exhibits, Kids’ Science Projects, The ScienceRead More
Battery Monitor for your Boat or Car
2020-10-20
This is a colorful, useful and educative project from Erlich Industrial Development, Corp. You will learn using Op-Amps as comparators and also LED bar graph analog display. Voltage Monitoring isRead More
Perpandle improved with Pepper Cap and Knob
2020-09-18
Once upon a time i heard a story of pepper and pyramids. From that i concluded that the Gargantuan Pyramids were not built by punishment but by reward. This wasRead More
LED Lamp or Bulb with Flashlight option
2020-08-24
This is another LED lamp from China, these people make nice lamps and also good designs of the plastic enclosure. Here by a clever enclosure design it is both aRead More
Lauriers Handy Dandy Little Circuits
2020-08-10
A site for electronic hobbyists, includes all kinds of small electronics hobby circuits. Now in the wayback archive. Lauriers Handy Dandy Little Circuits Some of the Projects are Temperature ControlledRead More
Dial AVO Amps-Volts-Ohms meter
2020-07-16
This was designed, keeping in mind, that sometimes we have few components available and we could be flat broke. Even that you could not carry your DMM somewhere, but youRead More