Practical
Electronics
Volume 49. No. 8
August 2020
ISSN 2632 573X
Contents
Projects and Circuits
Micromite LCD BackPack V3 by Tim Blythman
All the features of the V1 and V2 BackPacks, plus it supports both 2.8-inch and
. inch touchscreen displays and boasts five ne optional features.
16
Steering Wheel Audio Button to Infrared Adaptor by John Clarke
his adaptor lets you use most push button steering heel controls ith a ide
range of aftermarket head units.
25
Junk Mail Repeller by Allan Linton-Smith
s your letterbo full of un , even though you have a
you need to build our un
ail epeller
32
sign
lass
tereo l s
oofer Am lifier by Allan Linton-Smith
f e told you that you could get an assembled
W amplifier module for
you d probably thin it s un . ut in this circuit, that isn t the case
f so,
.
,
Series, Features and Columns
38
The Fox Report by Barry Fox
e tech norm
8
Techno Talk by Mark Nelson
he benefits of hindsight
10
Net Work by Alan Winstanley
12
n barely a dozen ee s e ve entered a different orld. his month, et Wor loo s
at the accelerated rise of video conference calls and ubico s latest ecurity ey.
Circuit Surgery by Ian Bell
spice
sing behavioural sources
Audio Out by Jake Rothman
o noise heremin o er upply
43
48
art
Make it with Micromite by Phil Boyce
art
ontrolling your
ith an
transmitter and animating its eyes
52
Practically Speaking by Mike Hibbett
ntroduction to surface mount technology
56
art
a s ool eans by Max The Magnificent
lashing
s and drooling engineers
art
59
Electronic Building Blocks by Julian Edgar
Battery capacity tester
64
Wireless for the Warrior
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Regulars and Services
Made in the UK.
Written in Britain, Australia,
the US and Ireland.
Read everywhere.
© Electron Publishing Limited 2020
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 September 2020 issue of Practical Electronics will
be published on Thursday, 6 August 2020 – see page 72.
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