In this episode Shahriar & Rosanah investigate an Agilent power supply which does not appear to power on. It can be quickly observed that the fuse has failed on the unit. Using an isolation transformer a small amount of AC voltage is applied to the unit after the fuse replacement....

David Johnson-Davies @ technoblogy.com build a four-channel thermometer that monitors the temperature at four temperature sensors, and gives a continuous readout on a small 128x32 OLED display. It's a useful project for various applications like PSU or PC monitoring. The article...

DevDuino is a Fully Redesigned and Enhanced Arduino-Compatible Board with Plenty of Must-Have Features. It features a 128x64 OLED display, along with a variety of LED indicators, RTC module, a slot for a micro SD card, and many other convenient features. The project is live on...

A new research initiative between the University of Washington's Sensor Lab and the Technical University of Delft in the Netherlands has created a microprocessor that can power itself through stray radio waves and receive programmable updates in the same fashion. While the RISC-derived...

Our friends at educ8s.tv uploaded a new video about how to build a ESP32 Wifi enabled weather station: In this video, we are going to make this. It is yet another weather station project I know, but this time we use the new ESP32 chip! We also use the new BME280 sensor which measures...

ams (Graz, Austria) has posted details of the TSL2540, a very-high sensitivity light-to-digital converter. Evaluation kit is available: The TSL2540 is a very-high sensitivity light-to-digital converter that approximates the human eye response to light intensity under varying lighting...

Convert your KiCAD boards into nice looking 2D drawings suitable for pinout diagrams. Never draw them manually again! [via] Jan Mrázek created a Python script that takes a KiCAD board (.kicad_pcb file) and produces a 2D nice looking drawing of the board as an SVG file. This small...

Daniel Eindhoven build a usb powered Teslacoil able to produce small sparks. The coil of the device is printed on the board! A new and improved PCB spiral Teslacoil. This Teslacoil has etched windings on a print circuit board. It has a USB interface which also powers the coil. The...