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FREE DUAL-CORE MICROCONTROLLER
hsmag.cc
February
2021
Issue
#39
INTRODUCING
LOW-COST • HIGH-PERFORMANCE • FLEXIBLE I/O
A NEW MICROCONTROLLER BOARD
FROM RASPBERRY PI
Feb. 2021
Issue #39
£6
WELCOME
EDITORIAL
Editor
Welcome to
HackSpace magazine
We’ve been waiting for months to be able to shout about this
issue, so it’s exciting to finally be able to talk about it. Pico is
the latest member of the Raspberry Pi stable and, if you’ve got
a paper version of this magazine, you should now be holding
one in your hands. It’s a thoroughly modern board, designed to
bring the Raspberry Pi ethos to the world of microcontrollers.
It’s cheap ($4), powerful (dual core running at up to 133MHz),
and comes with an innovative Programmable Input/Output
system that lets it do amazingly fast I/O.
We’ve got a whole load of information on how to get started
with this, starting on page 30, but for a sneak peek at what
you can achieve, take a look at page 14 for a game (inspired
by the 1980s classic Zarch) programmed by Eben Upton, and
ported to Pico by Graham Sanderson.
We look forward to seeing what you create with your Picos.
Send pictures of your creations to
hackspace@raspberrypi.com
or tag
@HackSpaceMag
on Twitter.
BEN EVERARD
Editor
ben.everard@raspberrypi.com
Ben Everard
ben.everard@raspberrypi.com
Features Editor
Andrew Gregory
andrew.gregory@raspberrypi.com
Sub-Editors
David Higgs, Nicola King
DESIGN
Critical Media
criticalmedia.co.uk
Head of Design
Lee Allen
Designers
Sam Ribbits, James Legg,
Ty Logan
Photography
Brian O’Halloran
CONTRIBUTORS
Lucy Rogers, Drew Fustini,
Jo Hinchliffe, Mayank Sharma,
Gareth Halfacree, Emily Velasco,
Marc de Vinck, PJ Evans,
Helen Leigh
PUBLISHING
Russell Barnes
Publishing Director
russell@raspberrypi.com
Advertising
Charlie Milligan
charlotte.milligan@raspberrypi.com
DISTRIBUTION
Seymour Distribution Ltd
2 East Poultry Ave,
London EC1A 9PT
+44 (0)207 429 4000
SUBSCRIPTIONS
Got a comment,
question, or thought
about HackSpace
magazine?
PAGE
FREE PICO
WHEN YOU
SUBSCRIBE
46
Unit 6, The Enterprise Centre,
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get in touch at
Subscription queries
hackspace@subscriptionhelpline.co.uk
GET IN TOUCH
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raspberrypi.com
hackspacemag
hackspacemag
This magazine is printed on
paper sourced from sustainable
forests. The printer operates an
environmental management system
which has been assessed as
conforming to ISO 14001.
HackSpace magazine is published
by Raspberry Pi (Trading) Ltd.,
Maurice Wilkes Building, St. John’s
Innovation Park, Cowley Road,
Cambridge, CB4 0DS The publisher,
editor, and contributors accept
no responsibility in respect of any
omissions or errors relating to goods,
products or services referred to or
advertised. Except where otherwise
noted, content in this magazine is
licensed under a Creative Commons
Attribution-NonCommercial-
ShareAlike 3.0 Unported (CC BY-NC-
SA 3.0). ISSN: 2515-5148.
ONLINE
hsmag.cc
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Contents
06
06
20
22
24
26
SPARK
Top Projects
Special things made by human beings
29
30
48
54
62
LENS
Raspberry Pi Pico
74
Say hello to the new microcontroller from Raspberry Pi
Objet 3d’art
Brilliant engineering to fetch power from plastic
How I Made:
Optical sound decoder
Squeezing sound out of squiggles on tape
Columns
Reuse, recycle, remake, remodel
Interview:
Eben Upton
The boss of Raspberry Pi on why Pico exists
Letters
Send us your musings on making
Improviser’s Toolbox
Magnets
Add clean stickiness to anything
Kickstarting
A hydroponics platform powered by MicroPython
Tutorial
DIY music
Cover Feature
RASPBERRY PI
LOW-COST • HIGH-PERFORMANCE • FLEXIBLE I/O
84
Build an instrument that sounds
and looks unique to you
102
30
4
CONTENTS
26
Direct from Shenzhen
Hot air gun
110
06
Interview
Eben Upton
108
67
68
74
78
84
90
96
Sometimes cheap isn’t cheerful
– sometimes it’s DANGEROUS!
112
54
On why the Raspberry Pi Pico
came into existence
FORGE
SoM
Traffic lights
SoM
Raspberry Pi 400
FREE PICO
with your
subscription
PG
Flash coloured LEDs on a Pico the easy way
More ways to play with this does-it-all machine
101
102
108
110
112
FIELD TEST
Best of Breed
The best tiny gaming platforms
46
Tutorial
FreeCAD
Design parametric parts
Tutorial
DIY music
Build a capacitive touch musical sculpture
Direct from Shenzhen
Hot air gun
Melt solder paste with only a slight risk of electric shock
Tutorial
NeoPixels with PIO
Flash coloured LEDs on a Pico the hard way
Review
Bangle.js
Massive amounts of programmability on a human wrist
Tutorial
Lasers
Add touchscreen control to a laser cutter
Review
micro:bit version 2
The BBC’s physical computing platform levels up
Some of the tools and techniques shown in HackSpace Magazine are dangerous unless used with skill, experience and appropriate personal protection equipment. While we attempt to guide the reader, ultimately you
are responsible for your own safety and understanding the limits of yourself and your equipment. HackSpace Magazine is intended for an adult audience and some projects may be dangerous for children. Raspberry
Pi (Trading) Ltd does not accept responsibility for any injuries, damage to equipment, or costs incurred from projects, tutorials or suggestions in HackSpace Magazine. Laws and regulations covering many of the topics
in HackSpace Magazine are different between countries, and are always subject to change. You are responsible for understanding the requirements in your jurisdiction and ensuring that you comply with them. Some
manufacturers place limits on the use of their hardware which some projects or suggestions in HackSpace Magazine may go beyond. It is your responsibility to understand the manufacturer’s limits.
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