📡 ESP8266 UART Communication (Transmit Data) — MicroPython

🧠 Overview

This project demonstrates UART serial communication using the ESP8266 and MicroPython.
The ESP8266 transmits the message "Hello" every 2 seconds through the UART interface at a baud rate of 115200 bps.
This data can be viewed on the Thonny Shell, Serial Monitor, or software like RealTerm, PuTTY, or CoolTerm.

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⚙️ Hardware Setup

Component	ESP8266 Pin	Description
UART TX	GPIO1 (TX)	Serial transmit
UART RX	GPIO3 (RX)	Serial receive
GND	GND	Common ground

🔹 The UART0 interface on the ESP8266 uses GPIO1 (TX) and GPIO3 (RX).
🔹 Connect a USB-to-UART converter (if needed) or monitor through the built-in serial port in Thonny IDE.

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🧩 Code

from machine import UART
import utime

uart = UART(0, baudrate=115200)

while True:
    utime.sleep_ms(2000)
    uart.write('Hello\n')