Learn Micropython - 10 Code Examples & CST Typing Practice Test

MicroPython is a lean and efficient implementation of Python 3 designed to run on microcontrollers and small embedded systems. It enables developers to write Python code for hardware with minimal overhead while maintaining Python syntax and semantics.

View all 10 Micropython code examples →

MicroPython Counter and LED Theme Toggle MicroPython Temperature Sensor Monitor MicroPython Button Press Counter MicroPython LED Blinker MicroPython Light Sensor Alert MicroPython Buzzer Alert MicroPython Motor Control MicroPython Distance Sensor Monitor MicroPython Humidity Sensor Monitor MicroPython Multi-Sensor Dashboard

Learn MICROPYTHON with Real Code Examples

Updated Nov 21, 2025

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Code Sample Descriptions

MicroPython Counter and LED Theme Toggle

from machine import Pin

count = 0
isDark = False

led = Pin(2, Pin.OUT)

def updateUI():
    print(f"Counter: {count}")
    if isDark:
        led.value(1)
        print("Theme: Dark")
    else:
        led.value(0)
        print("Theme: Light")

def increment():
    global count
    count += 1
    updateUI()

def decrement():
    global count
    count -= 1
    updateUI()

def reset():
    global count
    count = 0
    updateUI()

def toggleTheme():
    global isDark
    isDark = not isDark
    updateUI()

updateUI()
increment()
increment()
toggleTheme()
decrement()
reset()

Demonstrates a simple counter with theme toggling using MicroPython variables and microcontroller GPIO control (LED indicator).

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MicroPython Temperature Sensor Monitor

import random
temp = random.randint(20,35)  # Simulated sensor
print(f"Temperature: {temp}")
if temp > 30:
    print("Warning: High Temperature!")

Reads temperature from a sensor and prints alerts.

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MicroPython Button Press Counter

presses = 0

def buttonPressed():
    global presses
    presses += 1
    print(f"Button pressed: {presses}")

buttonPressed()
buttonPressed()
buttonPressed()

Counts the number of button presses and prints the count.

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MicroPython LED Blinker

from machine import Pin
import time
led = Pin(2, Pin.OUT)
for i in range(3):
    led.value(1)
    print("LED ON")
    time.sleep(0.5)
    led.value(0)
    print("LED OFF")
    time.sleep(0.5)

Blinks an LED on and off three times.

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MicroPython Light Sensor Alert

from machine import Pin
import random
led = Pin(2, Pin.OUT)
lightLevel = random.randint(0,100)
if lightLevel < 50:
    led.value(1)
    print("LED ON")
else:
    led.value(0)
    print("LED OFF")
print(f"Light Level: {lightLevel}")

Monitors light sensor and turns on LED if it is dark.

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MicroPython Buzzer Alert

import random
sensorValue = random.randint(50,150)
if sensorValue > 100:
    print("Buzzer ON")
else:
    print("Buzzer OFF")
print(f"Sensor: {sensorValue}")

Activates buzzer if a threshold value is exceeded.

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MicroPython Motor Control

motorActive = True
if motorActive:
    print("Motor ON")
else:
    print("Motor OFF")
motorActive = False
if motorActive:
    print("Motor ON")
else:
    print("Motor OFF")

Starts and stops a motor based on a condition.

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MicroPython Distance Sensor Monitor

import random
distance = random.randint(5,20)
if distance < 10:
    print("Alert: Object too close!")
print(f"Distance: {distance}")

Reads a distance sensor and prints alerts if object is too close.

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MicroPython Humidity Sensor Monitor

import random
humidity = random.randint(20,80)
if humidity < 30:
    print("Too Dry!")
if humidity > 70:
    print("Too Humid!")
print(f"Humidity: {humidity}")

Monitors humidity and prints if it is too high or low.

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MicroPython Multi-Sensor Dashboard

from machine import Pin
import random
led = Pin(2, Pin.OUT)
temp = random.randint(25,35)
light = random.randint(0,100)
if temp>30 or light<50:
    led.value(1)
    print("LED ON")
else:
    led.value(0)
    print("LED OFF")
print(f"Temp: {temp}, Light: {light}")

Reads multiple sensors and updates LED/buzzer accordingly.

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Frequently Asked Questions about Micropython

What is Micropython?

What are the primary use cases for Micropython?

Embedded systems programming. IoT device prototyping. Sensor data acquisition and control. Educational microcontroller projects. Robotics and automation scripting

What are the strengths of Micropython?

Python syntax makes embedded programming accessible. Efficient for low-power, low-memory devices. Wide support for many microcontroller boards. Interactive REPL allows rapid testing and debugging. Strong open-source community support

What are the limitations of Micropython?

Limited performance for compute-intensive tasks. Smaller standard library than full Python. Memory constraints require careful code management. Fewer high-level abstractions compared to CircuitPython for beginners. Complexity increases with advanced peripheral integration

How can I practice Micropython typing speed?

CodeSpeedTest offers 10+ real Micropython code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.

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Code Sample Descriptions

MicroPython Counter and LED Theme Toggle

from machine import Pin

count = 0
isDark = False

led = Pin(2, Pin.OUT)

def updateUI():
    print(f"Counter: {count}")
    if isDark:
        led.value(1)
        print("Theme: Dark")
    else:
        led.value(0)
        print("Theme: Light")

def increment():
    global count
    count += 1
    updateUI()

def decrement():
    global count
    count -= 1
    updateUI()

def reset():
    global count
    count = 0
    updateUI()

def toggleTheme():
    global isDark
    isDark = not isDark
    updateUI()

updateUI()
increment()
increment()
toggleTheme()
decrement()
reset()

Demonstrates a simple counter with theme toggling using MicroPython variables and microcontroller GPIO control (LED indicator).

Let’s Try →

MicroPython Temperature Sensor Monitor

import random
temp = random.randint(20,35)  # Simulated sensor
print(f"Temperature: {temp}")
if temp > 30:
    print("Warning: High Temperature!")

Reads temperature from a sensor and prints alerts.

Let’s Try →

MicroPython Button Press Counter

presses = 0

def buttonPressed():
    global presses
    presses += 1
    print(f"Button pressed: {presses}")

buttonPressed()
buttonPressed()
buttonPressed()

Counts the number of button presses and prints the count.

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MicroPython LED Blinker

from machine import Pin
import time
led = Pin(2, Pin.OUT)
for i in range(3):
    led.value(1)
    print("LED ON")
    time.sleep(0.5)
    led.value(0)
    print("LED OFF")
    time.sleep(0.5)

Blinks an LED on and off three times.

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MicroPython Light Sensor Alert

from machine import Pin
import random
led = Pin(2, Pin.OUT)
lightLevel = random.randint(0,100)
if lightLevel < 50:
    led.value(1)
    print("LED ON")
else:
    led.value(0)
    print("LED OFF")
print(f"Light Level: {lightLevel}")

Monitors light sensor and turns on LED if it is dark.

Let’s Try →

MicroPython Buzzer Alert

import random
sensorValue = random.randint(50,150)
if sensorValue > 100:
    print("Buzzer ON")
else:
    print("Buzzer OFF")
print(f"Sensor: {sensorValue}")

Activates buzzer if a threshold value is exceeded.

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MicroPython Motor Control

motorActive = True
if motorActive:
    print("Motor ON")
else:
    print("Motor OFF")
motorActive = False
if motorActive:
    print("Motor ON")
else:
    print("Motor OFF")

Starts and stops a motor based on a condition.

Let’s Try →

MicroPython Distance Sensor Monitor

import random
distance = random.randint(5,20)
if distance < 10:
    print("Alert: Object too close!")
print(f"Distance: {distance}")

Reads a distance sensor and prints alerts if object is too close.

Let’s Try →

MicroPython Humidity Sensor Monitor

import random
humidity = random.randint(20,80)
if humidity < 30:
    print("Too Dry!")
if humidity > 70:
    print("Too Humid!")
print(f"Humidity: {humidity}")

Monitors humidity and prints if it is too high or low.

Let’s Try →

MicroPython Multi-Sensor Dashboard

from machine import Pin
import random
led = Pin(2, Pin.OUT)
temp = random.randint(25,35)
light = random.randint(0,100)
if temp>30 or light<50:
    led.value(1)
    print("LED ON")
else:
    led.value(0)
    print("LED OFF")
print(f"Temp: {temp}, Light: {light}")

Reads multiple sensors and updates LED/buzzer accordingly.

Let’s Try →

Frequently Asked Questions about Micropython

What is Micropython?

What are the primary use cases for Micropython?

Embedded systems programming. IoT device prototyping. Sensor data acquisition and control. Educational microcontroller projects. Robotics and automation scripting

What are the strengths of Micropython?

What are the limitations of Micropython?

How can I practice Micropython typing speed?

CodeSpeedTest offers 10+ real Micropython code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.