ini_set('display_errors',1);
Using an RFID module with an ESP8266

Using an RFID module with an ESP8266

The RC522 RFID module is a smart card reader which, among other things, allows to activate a mechanism when the right card is presented to the reader. In this tutorial, we will see the management of an RC522 RFID module with a NodeMCU ESP8266 card. Prerequisite:...
Using an RFID module with an ESP32

Using an RFID module with an ESP32

The RC522 RFID module is a smart card reader which, among other things, allows to activate a mechanism when the right card is presented to the reader. In this tutorial, we will see the management of an RC522 RFID module with an ESP32 NodeMCU card. Prerequisite:...
Using an AC Light Dimmer with Arduino

Using an AC Light Dimmer with Arduino

The AC light dimmer is a module that allows to vary the power of an alternating current. It has the same use as a transistor in direct current. It can be used to vary the brightness of a lamp supplied with 220V or to vary the speed of a fan, for example. Material...
Drive a brushless motor with Arduino

Drive a brushless motor with Arduino

One of the main objectives of robotics is to articulate objects. To do this, it is very common to use electric motors. In the case of flying robots, such as drones, the actuators need a high rotational speed to turn the propellers and allow flight. In this case,...
Summary of function definition in C

Summary of function definition in C

In programming, it is very common or even necessary to use functions that require special definition. This is especially true when code blocks are repeated in the same program. A set of functions and objects are usually collected in libraries. We will see in this...