Erector sets helped to spark lifetime passions for building things. Take a trip down memory lane and follow the construction of a classic 1950’s Gilbert Erector set Ferris wheel with some new bells and whistles added from today’s technology.
This article was written specifically for the newcomer to the field of digital electronics. If you want to know how the digital world works, then discover how the numbers “1” and “0” changed the universe of all electronics – digital and analog. Plus, you don’t need to know calculus, algebra, or any complex formulas to understand.
I love restoring old electronic equipment. A while ago, I was excited to find a vintage Heathkit EC-1 analog computer for a reasonable price on eBay. It definitely needed a little TLC. Here’s how I brought it back to life.
Signal generators are devices used to make the signals used in testing and troubleshooting of radio receivers and other circuits, so are of primary interest to almost everyone interested in electronics.
In the US, the DC volt is legally defined by the Josephson array — a super conducting quantum device with a highly repeatable output voltage. Banks of standard cells and temperature-stabilized zener diode references are used by the National Institute of Science and Technology (NIST) to calibrate DC meters for scientific and industrial customers. So how is the AC volt defined?
How many times each day do you pick up a probe to measure a DC voltage? The meter reads, say 4.65 volts, and we usually accept it without question. But just what is a volt and how is it maintained? Here's a fascinating look at the search for increasingly more accurate methods of building a “standard volt.”
It’s not all that often that a new piece of hardware comes along that immediately captures the attention of the builder community. The ESP8266 is the newest example of this. It’s only about the size of a nickel, yet contains a powerful 32-bit microcontroller and a Wi-Fi interface, plus you can buy it for around $4.
Keeping tabs on relative humidity and temperature is important in a variety of situations. The DHT22 is a recent contribution to the lineup of joint humidity/temperature sensors, and is particularly attractive to DIYers thanks to its low cost. Uncover its secrets to get it working for you.
With the wild fluctuations in fuel prices over the last few years, world concern over global warming, and simply the idea of creating new and more sustainable technologies, immense interest and progress has developed recently in the world of battery development.
As an experimenter, I use wall warts all the time to power circuit boards, microcontroller boards, and even finished projects. However, during the checkout phase of a new circuit, wall warts present a problem. How do you measure their output when they’re plugged into a board or project box?
Electronic designers are familiar with the apparent perversity of Nature in the tendency of amplifiers to oscillate and oscillators to amplify.
The Macchiato Mini Synth is a fun, great-sounding, easy-to-use versatile little 8-bit synthesizer that fits in the palm of your hand.
Build a Propeller-Based Mentoring Platform for hours of fun with your kids or grandkids making simple computer games or exploring computer-controlled hardware circuits together.
A fun take on an old favorite - Build this Entertaining and Educational Digital LED clock and learn “Charlieplexing” to control 180 LEDs.