Practical
Electronics
Volume 50. No. 1
January 2021
ISSN 2632 573X
Contents
Projects and Circuits
utu e iniature alve tereo Pream lifier by John Clarke
14
Korg and Noritake Itron of Japan recently released their Nutube 6P1 twin triode.
t’s party piece is that it can operate from ust a few
Complete Arduino DCC Controller by Tim Blythman
26
Build this fantastic Arduino-compatible controller shield that forms the basis of a
CC system t can also be used as a CC booster or high-current motor driver
Intelligent 8x8 RGB LED matrix by Jim Rowe
34
Master a module with an
matri of
‘intelligent’
B E s he E s are
controlled via a single wire and multiple modules can be cascaded
7
6
5
4
3
2
1
0
SCL
SDA
AREF
GND
13
12
11
10
9
8
Series, Features and Columns
DIGITAL
POWER
ANALOG IN
5V
RES
3.3V
5V
GND
GND
VIN
A0
A1
A2
A3
A4
A5
UNO
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 February 2021 issue of Practical Electronics will be
published on Thursday, 7 January 2021 – see page 72.
Practical Electronics | January | 2021
The Fox Report by Barry Fox
HDMI capture dongle update
8
Techno Talk by Mark Nelson
Bad boy bulbs
10
Net Work by Alan Winstanley
he latest news on electric cars tips and tric s for running an Android-based V
system and advice on setting up a two-screen indows PC
12
KickStart by Mike Tooley
Part M S E switching devices in linear applications – introducing the 2
38
000
PIC n i by Mike Hibbett
Part P C
development board
43
Audio Out by Jake Rothman
heremin Audio Amplifier – Part
46
Make it with Micromite by Phil Boyce
Part 2 Counting pulses rotary encoders and a digital safe
50
Circuit Surgery by Ian Bell
Interference and noise
54
a s Cool eans y ax The agnificent
lashing E s and drooling engineers – Part
58
Visual programming with XOD by Julian Edgar
ight Column hermometer
63
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