Practical
Electronics
Volume 50. No. 10
October 2021
ISSN 2632 573X
Contents
Projects and Circuits
Mini Wi-Fi LCD BackPack by Tim Blythman
16
Wireless comms is a useful feature to have in a microcontroller system. This project
uses an ESP8266-based module as a powerful and inexpensive way to add Wi-Fi.
USB SuperCodec – Part 2 by Phil Prosser
ast month we introduced our new S SuperCodec sound card desi n ow it’s
time to describe the details of the circuitry behind its phenomenal performance.
24
High-power Ultrasonic Cleaner – Part 2 by John Clarke
34
This large and powerful Ultrasonic Cleaner is ideal for bulky items such as mechanical
parts and delicate abrics his month we’ll ocus on the build and ettin it oin
Colour Maximite 2 (Generation 2) – Part 1
by Phil Boyce, Geoff Graham and Peter Mather
The latest, turbocharged iteration of our retro home computer.
42
The Fox Report by Barry Fox
Pingdemic blues
8
Techno Talk by Mark Nelson
Hacker heritage
10
Net Work by Alan Winstanley
This month, a warning to readers to beware of fake, false or misleading
CE markings; plus a look to the future of metering and power.
12
Audio Out by Jake Rothman
A question of balance – Part 2
46
a s Cool eans y ax The agnificent
Flashing LEDs and drooling engineers – Part 20
50
Circuit Surgery by Ian Bell
Electrical Overstress Protection for Circuits
54
IoT Cricket by Md. Khairul Alam
Part 2: Working with Node-RED and Raspberry Pi
58
KickStart by Mike Tooley
Part 5: Getting to grips with EMC
64
Wireless for the Warrior
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Next month! – highlights of our next issue of Practical Electronics
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4
6
7
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Series, Features and Columns
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Regulars and Services
Made in the UK.
Written in Britain, Australia,
the US and Ireland.
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41
57
70
72
Read everywhere.
© Electron Publishing Limited 2021
Copyright in all drawings, photographs, articles,
technical designs, software and intellectual property
published in Practical Electronics is fully protected,
and reproduction or imitation in whole or in part are
expressly forbidden.
The November 2021 issue of Practical Electronics will be
published on Thursday, 7 October 2021 – see page 72.
Practical Electronics | October | 2021
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