Micah Elizabeth Scott @ yoututbe.com does a teardown, repair, and mini-review of the 2007 vintage Protek B8010FD. Protek B8010FD Function Generator Teardown and repair -...

Here is a tutorial on how to use 433MHz RF modules to send data from an Arduino to another. The example code transmits a message to the serial port of receiver. The most practical and cool way of sharing data from 1 Arduino to another is by far using a radio transmitter and receiver....

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...