Smallest seismic sensor uses vibration spectral analysis
Graham Prophet @ eedesignnewseurope.com discuss about a new small seismic sensor from Omron: Omron Electronic Components believes it has the world’s smallest class size seismic sensor, specifically designed to trigger the shutdown of potentially hazardous or easily damaged systems...
Continue ReadingSimple circuit indicates a low battery
James Wood @ edn.com writes: The Design Idea in Figure 1 indicates a low-battery condition in an audio test instrument that is powered by four AA cells. As the instrument was otherwise an all-discrete design, this same approach seemed more in keeping with the spirit of the project...
Continue ReadingESPurna-H, A Compact Open Source Hardware Wireless Power Wall Switch
Controlling your AC loads using wireless power switch is not a new concept. Several commercial products from several vendors can be found on the market such as Xiaomi’s Mi Smart Socket Plug, SAMSUNG’s SmartThings Power Outlet and Sonoff Pow WiFi Switch from ITEAD. Using ESP8266...
Continue ReadingExploring Eagle CAD ULPs #5 – Place50.ULP Place All Parts of The Board to The Position in The Schematic
Welcome to the 5th post of the “Exploring Eagle CAD ULPs” series. Each post will be about one useful ULP in Eagle CAD. “ULP” User Language Program is a plain text file which is written in a C-like syntax and can be used to access the EAGLE data structures and to create a...
Continue ReadingARM Compiler 6 With A Safety Package
Developed by ARM, the latest C/C++ compiler "ARM Compiler 6" had been announced with a safety package in a move to help developers to meet functional safety requirements. ARM Compiler 6 is based on the modern LLVM framework and Clang technology, in close collaboration with...
Continue Reading10km ESP32 WiFi Using Directional Antenna
[Jeija] was playing with some ESP32s and in true hacker fashion, he wondered how far he could pull them apart and still get data flowing. His video answer to that question covers the Friis equation and has a lot of good examples of using the equation, decibels, and even a practical...
Continue ReadingMightyWatt: 70W Electronic Load for Arduino
Jakub designed and built a programmable electronic load for Arduino, the MightyWatt R3: MightyWatt R3 is a programmable electronic load. That means you can use it for testing batteries, power supplies, fuel cells, solar cells and other sources of electrical power. You can also make...
Continue ReadingMPPT solar charger
Lukas Fässler from Soldernerd has been working on revised version of his MPPT Solar charger project: Over the last few weeks I have been quite busy with my MPPT Solar Charger project. I’ve built up a first board and started writing firmware for it. Since the last version was not...
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