Daniel Grießhaber @ hackaday.io has published his build of a USB power meter. His device is based on ATTiny 85 mcu and 0.96" OLED Display and is able to measure voltage, current and power output from USB port. Since USB has become more and more a power delivery standard, it...

Current Sensing Switch is designed to operate a Relay Contact when there is a DC current through the sense resistor exceeds the set point, Set point adjustable from 1A to 3Amp using on board potentiometer. This circuit can offer over current protection to your...

Konstantin Dimitrov has published an Arduino tutorial on how to make an voltmeter using SH1106 OLED display: I'm going to show you how to make a voltmeter with Arduino UNO, an OLED display, 2 resistors and 9 jumpers for less than 5 minutes. With it you will be able to measure...

This project is an Arduino shield able to measure ECG and respiration. The shield is equipped with a LCD display to show measured signal in real time. It's based on ADS1292R ECG Front End from TI. Recently i made shield for arduino which can measure ECG, respiration, eventually...

Sanket Gupta @ blog.octopart.com has written a capacitor select guide. The article goes through aluminum electrolytic capacitors, ceramic capacitors, Tantalum Capacitors, mica capacitors, film capacitors and Polymer Capacitors. In this blog, we will explain all the different types...

This detailed tutorial shows how to program an ATtiny45, ATtiny85, ATtiny44 or ATtiny84 microcontroller using the Arduino software. The ATtiny45 or 85 is a great option for running simple Arduino programs: it’s small, cheap and relatively easy to use. It does, however, have some...

webboggles.com has designed a SSD1306 OLED Screen based game kit using an ATtiny85 microcontroller. They also sell it as a kit to assemble it yourself. The new snap case has been updated to allow enough height for the screen header as well as a factory made CR2032 battery...

Iain Sharp build this port of online Circuit Simulator based on Paul Falstad’s simulator, however Sharp’s version is built using HTML5 and requires no plugin to run. Think of it like animated Fritzing circuits, with a slew of pre-built circuits and components available for...