Today I’m going to teach you how you can build your own RGB LED Glasses very easily and cheapThis has always been one of my biggest dreams and it finally came true! A huge shout out to EasyEDA for the amazing PCB’s and personal support! 🙂 The parts you will need for this project are the following: …
With all the different ways capacitors are labeled, figuring out the values of your capacitors can be challenging. Especially if you don’t have a digital multi-meter to test them. In this tutorial, I’ll show you how to build three different capacitance meters using an Arduino and a couple resistors. After finishing this project, you’ll be able to measure all …
First steps in circuit design for the budding electrical engineer. San Francisco, CA (October 25, 2018)—A Beginner’s Guide to Circuits ($17.95, 80 pp., October 2018) introduces beginners to the magic of electronics. With easy-to-follow instructions, it’s sure to be the perfect book for young readers who want to understand the everyday electronics around them and gain the …
My MQTT network at home moves up and down a lot of messages: sensor values, triggers, notifications, device statuses,… I use Node-RED to forward the important ones to PushOver and some others to a Blynk application. But I also happen to have an LED display at home and that means FUN. LED displays are cool. …
A recent ebay fishing expedition yielded an interesting little part for the very reasonable sum of about five pounds. It’s a voltage regulator module from a Dell PowerEdge 6650 Xeon server. I originally bought this because I had the idea of salvaging parts from it to use in another project. These are high quality modules …
Reverse engineering a server CPU voltage regulator module Continue Reading
While most of my microcontroller designs run on 3.3 volts there is still the ocasional 5 volt design. Or I do something with an Arduino. So the need may arise to interface between logic working at different voltage levels. There are several ways of doing this, depending on your needs. Things are relatively simple as …
Inrush current or input surge current refers to the maximum, instantaneous input current drawn by an electrical device during its initial turn on. Power converters also feature high inrush currents relative to their steady state currents that may be several times their normal full-load current when first energized. The inrush current of a power converter …
Eliminated materials and changed processes to reduce thickness and costs to below $1 Sydney, Australia – May 18, 2015 – CAP-XX (LSE:CPX), developer of flat supercapacitors for burst and back-up power in space-constrained electronic devices, today launched its Thinline series of single-cell supercapacitors. The world’s thinnest at 0.6mm thick, and with prices starting at less …
CAP-XX launches 0.6mm Thinline supercapacitors Continue Reading
