esp-now | Random Nerd Tutorials

ESP32 CYD with ESP-NOW: Receive and Display Data From Multiple Boards

Sara Santos — Thu, 10 Jul 2025 13:23:01 +0000

In this project, you’ll learn how to use the ESP-NOW communication protocol with the ESP32 CYD Board (Cheap Yellow Display) to receive and display data from multiple ESP32 sender boards. ...

The post ESP32 CYD with ESP-NOW: Receive and Display Data From Multiple Boards first appeared on Random Nerd Tutorials.

MicroPython: ESP-NOW with ESP32 (Getting Started)

Sara Santos — Thu, 19 Jun 2025 13:48:55 +0000

Learn how to use ESP-NOW communication protocol with the ESP32 programmed with MicroPython. ESP-NOW is a connectionless communication protocol created by Espressif, designed for short packet transmission. It is one ...

The post MicroPython: ESP-NOW with ESP32 (Getting Started) first appeared on Random Nerd Tutorials.

ESP32 I2C Master and Slave (I2C Communication Between Two ESP32) – Arduino IDE

Sara Santos — Thu, 20 Jun 2024 11:35:29 +0000

In this guide, you’ll learn how to exchange data between two ESP32 boards using I2C communication protocol. One ESP32 board will be set as an I2C master and the other ...

The post ESP32 I2C Master and Slave (I2C Communication Between Two ESP32) – Arduino IDE first appeared on Random Nerd Tutorials.

ESP32 Wireless Communication Protocols

Sara Santos — Fri, 28 Oct 2022 13:55:56 +0000

The ESP32 supports several different wireless communication protocols. Each protocol has its advantages and disadvantages and one can be more suitable than the other depending on the application. This guide ...

The post ESP32 Wireless Communication Protocols first appeared on Random Nerd Tutorials.

ESP32: ESP-NOW Encrypted Messages

Sara Santos — Thu, 20 Oct 2022 09:42:01 +0000

In this guide, you’ll learn how to encrypt ESP-NOW messages exchanged between ESP32 boards. ESP-NOW uses the CCMP method for encryption using a Primary Master Key (PMK) and Local Master ...

The post ESP32: ESP-NOW Encrypted Messages first appeared on Random Nerd Tutorials.

ESP-NOW: Auto-pairing for ESP32/ESP8266 with Bidirectional Communication and Web Server

Sara Santos — Thu, 13 Oct 2022 14:58:24 +0000

This guide shows how to build an ESP32 web server and use ESP-NOW communication protocol simultaneously. We’ll show you how to establish a two-way communication between the master (web server) ...

The post ESP-NOW: Auto-pairing for ESP32/ESP8266 with Bidirectional Communication and Web Server first appeared on Random Nerd Tutorials.

ESP32 BLE Server and Client (Bluetooth Low Energy)

Sara Santos — Thu, 11 Nov 2021 14:41:59 +0000

Learn how to make a BLE (Bluetooth Low Energy) connection between two ESP32 boards. One ESP32 is going to be the server, and the other ESP32 will be the client. ...

The post ESP32 BLE Server and Client (Bluetooth Low Energy) first appeared on Random Nerd Tutorials.

VS Code Workspaces with ESP32 and ESP8266 Projects

Sara Santos — Wed, 14 Jul 2021 12:54:58 +0000

In this tutorial, you’ll learn how to deal with workspaces on VS Code to organize your ESP32 and ESP8266 projects. You’ll learn what is a single-folder workspace, a multi-root workspace, ...

The post VS Code Workspaces with ESP32 and ESP8266 Projects first appeared on Random Nerd Tutorials.

ESP8266 NodeMCU Plot Sensor Readings in Charts (Multiple Series)

Rui Santos — Wed, 05 May 2021 15:11:14 +0000

This project shows how to build a web server with the ESP8266 NodeMCU board to plot sensor readings in charts with multiple series. As an example, we’ll plot sensor readings ...

The post ESP8266 NodeMCU Plot Sensor Readings in Charts (Multiple Series) first appeared on Random Nerd Tutorials.

ESP32 Plot Sensor Readings in Charts (Multiple Series)

Sara Santos — Wed, 28 Apr 2021 13:31:18 +0000

This project shows how to build a web server with the ESP32 to plot sensor readings in charts with multiple series. As an example, we’ll plot sensor readings from four ...

The post ESP32 Plot Sensor Readings in Charts (Multiple Series) first appeared on Random Nerd Tutorials.