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Send an email with Arduino and a web interface

Send an email with Arduino and a web interface

When a microcontroller has a remote connection, it is interesting that it can communicate with the outside world and, in particular, send information in the form of mail. We will see in this tutorial how to send an email using an Arduino with a Wifi connection and a...
Using a multi-channel relay module with Arduino

Using a multi-channel relay module with Arduino

When developing a home automation system, it is common to use a multi-channel relay module. These modules have several relay outputs (2, 4, 8 or 16) and offer an easy connection. This makes it possible to control several devices with a single microcontroller. Material...
Using a relay module with Arduino

Using a relay module with Arduino

If you are doing home automation, you will inevitably come across, at one time or another, an electrical relay module. The relay is a controllable switch that allows to isolate the control part from the power part. It is a very used component when you want to make the...
Create a web interface to control your Raspberry Pi

Create a web interface to control your Raspberry Pi

The Raspberry Pi is a very powerful microcomputer that has the particularity of integrating a chip to manage the Wifi connection. This makes it an ideal object to develop connected objects and, in particular, web servers. In this tutorial we will see how to create and...
Using a 4×7 segment display with Arduino

Using a 4×7 segment display with Arduino

In order to get information from the Arduino without connecting it to the computer, it is common to use an interface like the 4×7 segment display. We will see in this tutorial how to connect and program the Arduino to display information on the display. It is possible...
Generating Sounds with an Arduino MIDI Interface

Generating Sounds with an Arduino MIDI Interface

In order to generate synthetic sounds on your computer using an interface and create music, it is possible to transform an Arduino into a MIDI device. Material ComputerArduino with USB port Introduction to the MIDI protocol MIDI (Musical Instrument Digital Interface)...
Managing a 4×4 Analog Keyboard with Arduino

Managing a 4×4 Analog Keyboard with Arduino

Whether it’s a calculator or a building keypad, we commonly use numeric keypads. The 4×4 numeric keyboard is a matrix of 16 buttons whose states can be detected by a microcontroller. This module requires only one analog input from the microcontroller unlike the...
Using the PN532 RFID reader with Arduino

Using the PN532 RFID reader with Arduino

The NFC module PN532 is a smart card reader that, among other things, activates a mechanism when the correct card is presented to the reader. It can be found in smartphones, for example. The RC522 module is certainly the best known RFID module in the Arduino world,...
Force measurement with Arduino and the HX711 module

Force measurement with Arduino and the HX711 module

There are force transducers that are quite simple to use and compatible with microcontrollers such as Arduino. They consist of a load cell and a conversion module. The load cell is a strain gauge sensor that measures force in one direction in space. It is usually...
Communication between two ESP32 via WiFi

Communication between two ESP32 via WiFi

The NodeMCU ESP32 is a small microcontroller with a Wi-Fi chip. It is possible to establish a communication between two ESP32, when they are connected on the same network. In this tutorial, we will see a Master/Slave architecture, in which one ESP32 will play the role...