ini_set('display_errors',1);
Generating and uploading BIN files for ESP32

Generating and uploading BIN files for ESP32

When you have a number of microcontrollers to flash with the same program, it can be interesting to flash the compiled BIN file directly. This has two interests. It saves you time on uploading and it allows third parties to upload a program without using the Arduino...
Using an AC dimmer with ESP32

Using an AC dimmer with ESP32

In home automation, it is interesting to be able to manipulate alternating current in order to control different electrical appliances such as lamps or fans. The AC voltage dimmer is a module allowing to vary the power of an alternating current. It has the same use as...
Using the EEPROM with the ESP32

Using the EEPROM with the ESP32

The EEPROM is an internal memory of the ESP32 microcontroller that allows to keep in memory data after restarting the board. When working with microcontrollers, it is interesting to keep data in memory especially when the card turns off whether it is wanted or not, as...
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:...
Programming an ESP32 NodeMCU with the Arduino IDE

Programming an ESP32 NodeMCU with the Arduino IDE

ESP32 NodeMCUs are more and more used to make connected objects thanks to their embedded Wifi and Bluetooth links and their computing power. We will see how to use the Arduino IDE to program a NodeMCU. The way to configure the Arduino IDE is similar between these...