I²C is one of the easiest ways to send data between microcontrollers. ESP32 and ESP8266 both support hardware I²C, and you can connect them directly using just two wires: SDA and SCL and common GND. This guide shows a complete…
ESP-NOW is a fast, connectionless communication protocol developed by Espressif. It allows ESP32 boards to exchange small packets (up to 250 bytes) with extremely low latency and very little overhead — perfect for sensors, dashboards, wireless controllers, and battery-powered devices.…
(Universal method — works with any ESP8266 board) ESP-NOW is one of the fastest and most reliable ways to send data wirelessly between ESP32/ESP8266 devices.Unlike Wi-Fi or MQTT, it requires no router, no pairing, and has almost zero latency (1–3…