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BBC Micro:bit in Practice

BBC Micro:bit in Practice

By : Ashwin Pajankar, Abhishek Sharma, Sandeep Saini
5 (1)
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BBC Micro:bit in Practice

BBC Micro:bit in Practice

5 (1)
By: Ashwin Pajankar, Abhishek Sharma, Sandeep Saini

Overview of this book

This book is a one-stop guide for learning BBC Micro:bit with MicroPython, exploring many hardware components and programming techniques to provide detailed insights into developing practical applications with the Micro:bit. It will also show you how hardware components can be manipulated using a combination of Micro:bit and MicroPython for developing practical projects. BBC Micro:bit in Practice will help you gain a holistic understanding of the BBC Micro:bit platform and MicroPython programming, guiding you through mini projects aimed at developing practical knowledge of circuit design and writing programs. You’ll learn how to write programs for working with built-in LEDs and buttons, interfacing external LEDs, buttons, motors, buzzers, and much more. You’ll also work with built-in radio, speakers, accelerometer, and a compass. You’ll dive into concepts related to the Micro:bit filesystem, interfacing external displays, and working with libraries in detail before exploring sewable circuits and wearable technology. After reading this Micro:bit book, you’ll understand how to apply principles in electronics and MicroPython to create interesting real-life projects from scratch.
Table of Contents (22 chapters)
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1
Part 1: Getting Started with the BBC Micro:bit
6
Part 2: Programming Hardware with MicroPython
10
Part 3: Filesystems and Programming Analog I/O
13
Part 4: Advanced Hardware Interfacing and Applications

Working with radio

The Micro:bit comes with a built-in 2.4 GHz radio module. Using the built-in library radio, we can send and receive messages wirelessly. For demonstrations of the radio functionality, we do not need to create a circuit. We are ready to go by just powering up a few Micro:bit devices.

Turning the radio on and off

We can get started by turning the radio of a Micro:bit on and off with the following simple code executed in a REPL:

>>> from microbit import *
>>> import radio
>>> radio.on()
>>> radio.off()

Let’s learn to send and receive messages.

Sending and receiving messages

We can send messages with the built-in radio.send() method. The maximum length of the string that can be sent with this method is 250 characters. Let’s write the code for a transmitter routine:

from microbit import *
import radio
try:
    radio.on()
    while True:
    ...

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