Practical
Electronics
Volume 51. No. 9
September 2022
ISSN 2632 573X
Contents
Projects and Circuits
Touchscreen and Remote Digital Preamp with Tone Controls – Part 1
16
by Nicholas Vinen and Tim Blythman
his rea
has the est o oth orlds the enefits o digital control together
ith the lo noise and distortion o an analogue design.
Micromite to Smartphone Connector via Bluetooth by Tom Hartley
26
his ro ect de onstrates ho to use a icro ite as the heart o an o nternet
o hings device y connecting a icro ite to your ndroid s art hone.
20A DC Motor Speed Controller by John Clarke
his s all ut o er ul s eed controller has a
rating and is ac ed ith
eatures. t suits a ide range o a lications and is si le to uild and use.
30
USB-PD Triggers, Decoys and Testers by Jim Rowe
ollo ing on ro the article last onth on
charging odules e ll no
e a ine so e o the any lo cost
trigger decoy and tester odules.
40
Techno Talk by Mark Nelson
hat s in a na e
8
The Fox Report by Barry Fox
o accurate is s art eter advertising
10
Net Work by Alan Winstanley
round u o to ical technological issues and trends ro the
and around the
orld ro lithiu
attery fires to ho
hat ords can or or you.
12
Circuit Surgery by Ian Bell
lectronically controlled resistance
44
Series, Features and Columns
art
Make it with Micromite by Phil Boyce
art
sing in rared to synchronise ti e
48
a s Cool eans y ax The agnificent
lashing
s and drooling engineers
art
52
Audio Out by Jake Rothman
rans or ers in audio
art
58
Regulars and Services
Made in the UK.
Written in Britain, Australia,
the US and Ireland.
Read everywhere.
© Electron Publishing Limited 2022
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 October 2022 issue of Practical Electronics will be
published on Thursday, 1 September 2022 – see page 72.
Practical Electronics | September | 2022
Wireless for the Warrior
2
4
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NEW! Practical Electronics back issues DOWNLOADS – 2021 now available!
6
Reader services – Editorial and Advertising Departments
7
Editorial
7
igital rea ... he o er o atteries... and a arning... e issues and solutions
Exclusive Microchip reader offer
9
in a icrochi
uriosity ro valuation it
Teach-In bundle – what a bargain!
39
Practical Electronics PCB Service
64
s or ractical lectronics ro ects
PE Teach-In 9
67
Direct Book Service
68
uild your li rary o care ully chosen technical oo s
PE Teach-In 8
70
Classified ads and Advertiser inde
Next month! – highlights of our next issue of Practical Electronics
72
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