Learn how to build a DIY current and voltage meter using Arduino Nano. This project demonstrates step-by-step instructions to ...

These devices have key drawbacks. Water level indicators require manual pump operation and often waste power as multiple LEDs ...

The image below shows the Arduino circuit diagram for building a smart bin. As you can see it is very simple, it just has an ultrasonic sensor and a servo motor connected to the Arduino UNO, and the ...

We must ensure the components are connected correctly as per the above circuit diagram. Note that we can't directly drive the water pump from the Arduino UNO R4 Wi-Fi peripheral pins. For that, we ...

The principle of a dry contact is that the relay contacts are not directly connected to the device’s power supply circuit. Instead, the contacts are isolated and require an external power source to ...

It uses a CT current clamp clipped over the building’s main power cables and connected to the local mains circuit for voltage and frequency measurement. The add-on board comes in two variants: IPEM ...

I noticed that a relay with a coil designed for use from an AC mains supply will consume around four times more energy than an equivalent relay driven from a DC supply. By using clever coil driving, ...

This repository contains the scripts that produce the libraries included with esp32-arduino. Tested on Ubuntu (32 and 64 bit), Raspberry Pi and MacOS. Install the ...

Let's explore the Internet of Things (IoT) and sensor-based applications! Here we cover an array of topics through practical DIY projects and in-depth technical articles. Read on for smart home ...

Connect a 4k7 kΩ pull-up resistor between the 1-Wire data line and 5V power. Note this applies to the Arduino platform, for ESP32 and 8266 you'll need to adjust the resistor value accordingly. For ...

The Arduino IDE has a bit of a split personality. On the one hand, it is a simple environment where you can just pick and choose a few libraries, write a few lines of code, and make lots of ...