You'll learn how to create an automation system to communicate 3 Arduinos via RS485.

This is a simple square-wave generator that basically uses the TimerOne library allow you to generate a PWM signal at pin 9.

Relay VS Transistor.

Discharge a fully charged Lithium-Ion cell through a resistor while measuring the current flowing through the resistor to calculate capacity

A very simple but useful device for your lab.

This device serves for accurate measurement of small resistances in the range of 0.1 ohm up to 50 ohms.

In this tutorial I am looking at using millis function in the code. Describing the advantages it has over using delay function.

"how to hook NRF24 Modules with an Arduino Correctly without killing the module"

Another simple to build useful instrument in you lab.

Simple to build and useful instrument for your lab.

Inexpensive, precision, autorange capacitance meter with a large range.

The device is sufficiently accurate and uses minimum number of external components.

A cheap $10 UPDI programmer for Mircochip's new avrTiny processors.

Android app to control Arduino's inputs outputs

Android app of frequency counter using Arduino.

Measure and record mains frequency on the SD card along with the timestamp.

Oscilloscope for Android device and Arduino.

A useful tool for accurately measuring long distances.

Need to control hundreds of relays with your Arduino, ESP8266, Pi, PC or Mac and activate them simultaneously within < 1 ms time window?

An arduiNOOB friendly tutorial for beginners on daisy-chaining.

A quick and compact Arduino Nano setup with four DIP switches to allow for mode selection. Power is provided by CR2032 battery package.

Probably the most useful Arduino project I've ever made! A automatic tester for a product I sell.

Use the IO Expander and Relay Expander with the Arduino to control up to 65,280 relays!

A study for a linear measuring device with Arduino and photoelectric rotary encoder.