This is a turorial on how to create a programmable scale for weighing objects, parts counting, even directing product flow on a conveyor system.  Parts used are a load cell, an Arduino, and an INA125P amplifier. Arduino Load Cell / Scale -...

Jakub has designed and built a USB breakout board with current monitor – USBuddy: Do you sometimes develop with USB? I do. So I need to access data lines, bus voltage and I’d like to easily monitor the current too. I made myself a small companion (43.5 mm × 22.5 mm, 9.5 g) to do...

Yahya tipped us with his latest tutorial about flashing EFM32 MCUs with OpenOCD using FT2232H adapter. Old MCUs from vendors like ATMEL and MICROCHIP, like the PIC16F and Atmega family, tend to have a special programming interface to program internal flash. For example, Atmega used...

A Smart Night Lamp for kids. Tutorial and source code available: Few weeks ago I heard my nephew (aged 7) complaining of the dark at night. Basically he was afraid. So I decided to put knowledge into practice and build a night lamp for kids. Since the project was intended for kids, I...

In this video we learn how to drive the new, low cost big, 3.5" Color TFT display for Arduino Uno and Mega. For the written tutorial please check here. A few weeks ago, I discovered this promising new display on Banggood.com and thought that it might be useful in some of our projects....

This video describes and demonstrates the 4-wire resistance measurement (Kelvin connection) - what it is, and when & why it is used for making low valued resistance measurements. 4 Wire Resistance Measurement - Kelvin connection -...

Ardumotive.com shows us how to build a 2-digit countdown timer using Arduino. In this Instructables guide I will show you how to make your own Arduino two digit countdown timer. I made my own circuit by using the ATmega328 micro controller but this is an optional step. In this guide...

"Kai" is in the process of building a Geiger counter based on BPW34 photodiode and explains his first step for the sensor circuit. The common approach to protect the photodiodes from light is to use one layer of tin foil and connect it to ground. This should also protect the...