Homebrew Multimode Digital Voice Modem adapter

Homebrew Multimode Digital Voice Modem adapter

Florian Wolters made his own version of MMDVM adapter: During experiments with digital voice mode in hamradio I discovered a nice...


Not a battery or a supercap, but a ‘thin laminate energy device’

Not a battery or a supercap, but a ‘thin laminate energy device’

Murata’s UMAL is a low-profile high capacity energy device.


How To Select an Inductor

How To Select an Inductor

Sanket Gupta pointed us to his latest article, on how to select an inductor and discuss about the various types of them.


VXO – based PLL frequency synthesizer for 7 MHz

VXO – based PLL frequency synthesizer for 7 MHz

Vasily Ivanenko made a VXO-based synthesizer: To make a VXO to mix with a ~7 MHz VCO, you’ll need a crystal that is higher in f...


The future of IC design

The future of IC design

R Colin Johnson @ edn.com discuss about the future of IC design and the different technologies that can extend Moore Law.


PCB Business Card

PCB Business Card

alex.puffer @ hackaday.io designed a nice PCB business card with onboard 555 timer IC.


Arduino ESP8266 Tutorial: Send an email easily with your Wemos D1 board using a PHP script!

Arduino ESP8266 Tutorial: Send an email easily with your Wemos D1 board using a PHP script!

educ8s.tv uploaded a new tutorial on their youtube channel.


3D printing tool is all-in-one pen, precision solder, burner, and cutter

3D printing tool is all-in-one pen, precision solder, burner, and cutter

Able to fit in the palm of your hand and provided with several changeable tips, the 3DSimo Mini allows you to 3D print using one...


850nm infrared LED outputs 770mW at 1A

850nm infrared LED outputs 770mW at 1A

by Julien Happich@ edn-europe.com Designed for infrared illumination for cameras, surveillance systems or machine vision, the Oslon Black SFH 4715A...


Heat Activated Cooling Fan Controller

Heat Activated Cooling Fan Controller

Heat activated cooling fan controller is a simple project which operates a brushless fan when the temperature in a particular...


Limiting Inrush Current

Limiting Inrush Current

aimtec.com has a basic article on how to limit inrush current using passive components.


Make the PCB from your design using Altium CircuitStudio

Make the PCB from your design using Altium CircuitStudio

AshokRao guide us through the process of creating a PCB out of your Schematic, using Altium – CircuitStudio OK, further to Part 1 ...