Using a Current Shunt with a Panel Meter / Ammeter scale change
https://www.electronics-lab.com/using-current-shunt-panel-meter-ammeter-scale-change/
This video gives you the basics of how to calculate and use a simple resistive current shunt with an analog panel meter to change the current that is needed for a full scale deflection. The notes page for this video can be found here. Using a Current Shunt with a Panel Meter / Ammeter scale […]
ulibSD – a library for use SD cards in SPI mode with uControllers
https://www.electronics-lab.com/ulibsd-library-use-sd-cards-spi-mode-ucontrollers/
electronictechnician.wordpress.com has published a library for use SD cards in SPI completely written in C. It’s a library for use SD cards in SPI mode with uControllers, entirely written in C. This library can work with SD cards and also has the possibility to emulate the behavior in a PC file (GNU/Linux) using the macro […]
Hacking a UART on a blood pressure cuff
https://www.electronics-lab.com/hacking-uart-blood-pressure-cuff/
moamindustries.com hacked an Omron RS8 blood pressure cuff by adding a UART interface to it. As part of a prototype developed 12 months ago I was tasked with reading measurements from a blood pressure cuff [sphygmomanometer] in real time. Not surprisingly there are no consumer level devices that have a serial interface because what ‘normal’ […]
WISP – Wireless Identification and Sensing Platform
https://www.electronics-lab.com/wisp-wireless-identification-sensing-platform/
WISP, the Wireless Identification and Sensing Platform, is a family of sensors that are powered and read by UHF RFID readers. WISP, the Wireless Identification and Sensing Platform, is a family of sensors that are powered and read by UHF RFID readers. WISPs do not require batteries since they harvest their power from the RF […]
Hacking home weather station transmitter
https://www.electronics-lab.com/hacking-home-weather-station-transmitter/
Bob hacked a home weather station transmitter and made a home thermometer from it. He writes: Recently I’ve found this piece of electronic on the dumpster, it was looking interesting – compact case with battery holder, LCD display, temperature and humidity sensor. It has also radio transmitter, but I’m not interested in it since I […]
3W Stereo Audio Amplifier using TDA7266D
https://www.electronics-lab.com/3w-stereo-audio-amplifier-using-tda7266d/
Tiny stereo audio amplifier board has been designed around SMD TDA7266D IC from ST. The TDA7266D is a dual bridge amplifier specially designed for Portable Audio, LCD TV/Monitor, PC Motherboard, and TV applications. This circuit provides high quality audio output of 3W approx. on each channel with standard audio signal input. The circuit works with […]
Raspberry Pi Web Server using Flask to Control GPIOs
https://www.electronics-lab.com/raspberry-pi-web-server-using-flask-control-gpios/
In this article “Rui Santos” shows us how to configure Raspberry Pi as server and use it to toggle two LEDs over the internet. In this project you’ll create a standalone web server with a Raspberry Pi that can toggle two LEDs. You can replace those LEDs with any output (like a relay or a […]
Hot rods keep the die cool
https://www.electronics-lab.com/hot-rods-keep-die-cool/
Clemens Valens @ elektormagazine.com shows us a new IC Package that keeps the IC cool. Texas Instruments’ HotRod QFN is a thermally enhanced plastic package with solder lands on all sides as well as power buses for enhanced current carrying capability. Inside the package the die is mounted on a copper lead frame which eliminates the […]
0.8A step-up DC/DC converters in a tiny package
https://www.electronics-lab.com/0-8a-step-dcdc-converters-tiny-package/
Torex Semiconductor’s XC9141/XC9142 series of 0.8A step-up DC/DC converters come with an input–output disconnection function (load disconnection function) to prevent malfunctioning during standby, and for device functionality that enables power supply to RTC. When the output voltage is 3.3V, the IC can start from an input voltage of 0.9V with a resistance load of 100Ω, […]
App note: Transformers
https://www.electronics-lab.com/app-note-transformers/
All about transformers and its different uses in this application note from Murata. App note: Transformers – [Link]