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Using an RFID module with an ESP32

Using an RFID module with an ESP32

by | 3 May 2021 | Tutorials

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

by | 23 Apr 2021 | Tutorials

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...
Control 8 relays using ESP32 and serial monitor

Control 8 relays using ESP32 and serial monitor

by | 26 Jan 2021 | Projects

In this tutorial we will see how to address each relay individually with a NodeMCU32S microcontroller and 74HC595 shift registers. At the end of this tutorial you will also be able to control each relay using the serial monitor. This tutorial follows on from the...
Controlling 8 relays with ESP32 and shift register

Controlling 8 relays with ESP32 and shift register

by | 26 Jan 2021 | Projects

In this series of tutorials, we will see how to drive a multitude of relays with a NodeMCU32S microcontroller and 74HC595 shift registers. We will then see how to address each relay individually. Finally, we will create a web interface to control each relay via the...