ESPNOW Mix With ESP32 and ESP8266

Learn how to create a network of wireless sensors using ESP32 and ESP8266 boards with ESP-Now protocol in this comprehensive 26-minute tutorial. Explore the fundamentals of ESP-Now, a wireless communication protocol developed by Espressif for ESP devices. Discover various network designs and follow along with practical examples of transmitting data from an ESP32 to multiple ESP8266 receivers. Set up the Arduino IDE for ESP32 boards, examine transmitter and receiver sketches, and troubleshoot common errors. Gain hands-on experience in modifying existing sketches to work with both ESP32 and ESP8266 boards, enabling you to build versatile wireless sensor networks for your projects.

Introduction
What is ESP-Now?
ESP-Now network designs
ESP-Now example with esp32 and esp8266s
Example sketches for tx to multiple rx
Connecting ESP32 boards to Arduino IDE
ESP-Now transmitter sketch for esp32
ESP-Now receiver sketch for ESP-Now
esp32 and esp8266 header file errors
ESP_OK to ERR_OK error
esp_now_register_receive_cb error