Introduction

What is MicroPython?

MicroPython is a lightweight version of Python 3 that runs on microcontrollers like:

• ESP32
• ESP8266
• Raspberry Pi Pico
• STM32, and more.

It lets you control hardware using Python, making embedded programming more beginner-friendly and fun compared to C or C++.

Why use MicroPython?

Feature	Benefit
✅ Python-based	Easy to learn and write
✅ Lightweight	Designed for low-memory microcontrollers
✅ Interactive	You can test commands live using the REPL
✅ Cross-platform	Runs on many microcontroller boards
✅ Fast prototyping	Great for beginners, makers, and IoT projects

What Can MicroPython Do?

With MicroPython, you can:

• Blink LEDs
• Read sensors (temperature, motion, light, etc.)
• Control motors, buzzers, and relays
• Build web servers (Wi-Fi enabled boards like ESP32)
• Store data in files or memory
• Communicate with other devices (I2C, SPI, UART)

Simple Example:

Here’s a basic LED blink program in MicroPython:

from machine import Pin
from time import sleep

led = Pin(2, Pin.OUT)  # Use GPIO2 (common onboard LED pin)

while True:
    led.on()
    sleep(1)
    led.off()
    sleep(1)

💡 This code turns an LED on and off every second.

📦 Tools You Use With MicroPython

Tool	Use
Thonny IDE	Simple Python IDE with MicroPython support
uPyCraft	Lightweight IDE for MicroPython
esptool.py	For flashing firmware
WebREPL	Remote access over Wi-Fi

📌 Key Concepts

• REPL: Read-Eval-Print Loop — test code live.
• Flash: Install firmware onto your board.
• GPIO: General Purpose Input Output — control pins.
• Libraries: MicroPython has built-in and custom modules.

🎯 Summary

MicroPython = Python + Hardware Control

It’s perfect for:

• Students learning coding and electronics
• Quick prototyping of IoT projects
• Makers and hobbyists
• Teaching real-time systems with ease