hackspace_issue37.pdf

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hsmag.cc
December
2020
Issue
#37
RASPBERRY PI
We take a look
at the latest
tiny computer
400
Rob
Paper engineering
and the power of
doing your own thing
Ives
Design and make a perfect
robotic companion
DESIGN
Get started
with FreeCAD
3D
CONTROLLER
ADD
CHOOSE YOUR
SELECT
THE PERFECT
MOTORS
SENSORS
DIY
CHASSIS
Dec. 2020
Issue #37
£6
PICK YOUR
CONTACTLESS
Use NFC in your projects
RESTORATION
HOME AUTOMATION
3D PRINTING
MUSIC
WELCOME
EDITORIAL
Editor
Welcome to
HackSpace magazine
Robots – our electromechanical assistants – can come in all
shapes and sizes, from hulking great beasts that do things no
human could (such as manoeuvring heavy objects in a factory),
to tiny little marvels that do things no human could (such as fit
through small gaps). The point of robots is that we can control
them to do things we can’t (or don’t want to) do.
Well, that’s not the only point – there’s also the fact that
robots are fun to make. This issue, we’re looking at how to
make a wheeled robot – one that can scurry around your
house. There are loads of ways of doing this, so we show you
how to pick the right parts for your bot. What you do with it is
up to you, but here are a few things I don’t like doing that I
might create a robot for:
• vacuum-cleaning
• mowing the lawn
• robot fighting
OK, that last one is a little different, but it’s still a great reason to
build a robot. Those are just my ideas. What will you build a
robot for?
BEN EVERARD
Editor
Got a comment,
question, or thought
about HackSpace
magazine?
Ben Everard
ben.everard@raspberrypi.org
Features Editor
Andrew Gregory
andrew.gregory@raspberrypi.org
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, Jo Hinchliffe,
Lorraine Underwood, Mayank
Sharma, Gareth Branwyn, Matt
Bradshaw Marc de Vinck, PJ
Evans, Helen Leigh
PUBLISHING
Russell Barnes
Publishing Director
russell@raspberrypi.org
Advertising
Charlie Milligan
charlotte.milligan@raspberrypi.org
DISTRIBUTION
Seymour Distribution Ltd
2 East Poultry Ave,
London EC1A 9PT
+44 (0)207 429 4000
SUBSCRIPTIONS
Unit 6, The Enterprise Centre,
Kelvin Lane, Manor Royal,
Crawley, West Sussex, RH10 9PE
ben.everard@raspberrypi.org
PAGE
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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
3
Contents
06
06
18
20
26
28
30
74
SPARK
Top Projects
Brilliant things made by brilliant people
33
34
48
54
62
66
LENS
Build a robot
Motors, sensors, actuator
Objet 3d’art
Shake it (automatically) like a Polaroid picture
How I Made:
A scrolling face mask
Combine Covid hygiene with reactive blinkenlights
Meet the Maker:
UNIQ Furniture
Upcycling done right, by Andrew Smith
Interview:
Rob Ives
On the limitations and possibilities of paper
Columns
A remedy for anti-social media
Improviser’s Toolbox
Cardboard
The best bit of any new toy is the box
Letters
Music! Robots! Requests!
Making a maker business
Today: an idea. Tomorrow: Omni Consumer Products
Kickstarting
Where cake meets 3D printing
Tutorial
Restoration
Cover Feature
Take control of every single
component and build
the perfect mechanical
companion
72
Bring tools back to life
76
34
4
CONTENTS
86
Direct from Shenzhen
Belt sander
110
06
Interview
Rob Ives
20
106
71
72
74
76
78
82
86
92
Can you get cheap, reliable
machine tools from China?
FORGE
SoM
Restoration
Give new life to old tools
54
Teaching the world engineering…
using paper
SoM
Copolyester
Tough and good-looking printing filament
99
100
106
108
110
112
FIELD TEST
Best of Breed Tindie
Our picks of the maker marketplace
Tutorial
Raspberry Pi
Read RFID and NFC tokens with a HAT
Tutorial
Home Automation
Let the machines control your house
Direct from Shenzhen
Belt sander
An essential tool for making knives
Tutorial
Laser etching
Adapt a laser cutter to etch into glassware
Review
Raspberry Pi Compute Module 4
A Raspberry Pi for embedded applications
Tutorial
FreeCAD
Customise your wheels
Review
Raspberry Pi 400
Our favourite new desktop Linux machine
Tutorial
Found sound
Find unexpected musical treats everywhere
Review
NVIDIA Jetson Nano 2GB
A cheap and accessible platform for AI
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.
5

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