At the end of this tutorial you find a step by step example of the UART communication between an Arduino Uno and an ESP8266 NodeMCU Table of Contents UART is the only asynchronous serial communication protocol and used in RFID card reader modules as standalone communication interface.We have other tutorials about ESP-NOW with the ESP8266 As an example, two ESP8266 boards will exchange DHT sensor readings. Learn how to establish a two-way communication between two ESP8266 NodeMCU boards using ESP-NOW Protocol.Serial Communication between ESP2866-12 (NODE-MCU) and Arduino to increase the number of analog pins as my primary work.Data Bits : 8 A serial port transmits data bit by bit over a single line. In the serial port context, "115200 baud" means that the serial port is capable of transferring a maximum of 115200 bits per second. The baudrate is the rate at which information is transferred in a communication channel.
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