In this video I’m showing how I’ve built a very simple battery backup circuit for my home alarm system. The circuit charges a 12v lead acid battery and in an event of a power loss, it transfers the ...

A teardown of Dell’s Tower Plus EBT2250 prebuilt reveals a very direct response to the ongoing scrutiny around 16-pin GPU power connectors: Dell has implemented a mechanically fixed 12V-2x6 interface ...

In this video, I'm exploring the use of Mini PIR Sensors with ESP32 with both Arduino-based projects as well as making a movement sensor for Home Assistant by using ESPHome. The sensor is quite ...

TL;DR: Reports reveal that NVIDIA's GeForce RTX 5090 and other high-powered GPUs face risks of burning or melting 12V-2x6 power cables and connectors, even when undervolted. Adapter use and improper ...

Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don Welch] recreated a heading indicator of his own, using cheap ...

What do we make of the Lakers' run of nine wins in 10 games? Are they contenders? Is this defense something that can hold up in a playoff series, let alone three or four of them? With less than a ...

Who among us does not have a plethora of mains-powered devices on their workbench, and a consequent mess of power strips to run them all? [Jeroen Brinkman] made his more controllable with a ...

SparkFun code, firmware, and software is released under the MIT License. Please see LICENSE.md for further details. // to use hardware reset control, and to monitor the H_INT pin. // The H_INT pin ...

SparkFun code, firmware, and software is released under the MIT License. Please see LICENSE.md for further details. // to use hardware reset control, and to monitor the H_INT pin. // The H_INT pin ...

Abstract: This paper presents the concept as well as fabrication and measurement results for a new class of MEMS accelerometers that can be operated directly by a digital processor without the need ...