Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi with an ESP8266 ESP-01 module. With ...

Hello, I’m excited to review the ESP32 display modules and HMI touchscreens from Elecrow with sizes ranging from 2.4 to 7.0 inches. For this review, Elecrow kindly provided me with both 3.5-inch and 7 ...

In a previous article, we looked at connecting various kinds of Arduino hardware to your Mac. Here's how to get started programming on them to create your own projects. In order to program your ...

This example demonstrates how to virtually connect together Serial and Serial1. This tutorial can be so loaded on boards that have two different UART interfaces on the 0 and 1 pins and the USB port ...

Update, 1/2/21: It's New Year's weekend, and Ars staff is still enjoying some necessary downtime to prepare for a new year (and a slew of CES emails, we're sure). While that happens, we're resurfacing ...

This is an automatic liquid vending machine based on radio-frequency identification (RFID) system. A fixed amount of liquid can be dispensed by swiping an RFID tag across the RFID reader. An ...

Read and Write NDEF messages on Mifare Ultralight NFC Tags with Arduino connected to MFRC522 RFID card. NFC Data Exchange Format (NDEF) is a common data format that operates across all NFC devices, ...

This is a project for a voice controlled home automation system to control appliances with your voice through an Android app. An Arduino Mega board is used for controlling the relay through which an ...

This is the simple method to setup serial communication between Arduino and MATLAB. Here we will simply send the data from MATLAB to the Arduino serially using command window and then Arduino read the ...

The ESP8266-01 has been a great module to quench all our thirsts for IOT projects. Since its release, it has developed a strong community and evolved into an easy to use, cheap and powerful Wi-Fi ...