LFSR Random Number Generator Using Logic ICs - October 2020

Outer Front Cover
Contents
Subscriptions: PE Subscription
Subscriptions: PicoLog Cloud
Back Issues: PICOLOG
Publisher's Letter
Feature: The Fox Report by Barry Fox
Feature: Techno Talk by Mark Nelson
Feature: Net Work by Alan Winstanley
Project: HIGH-POWER 45V/8A VARIABLE LINEAR SUPPLY by Tim Blythman
Back Issues: LFSR Random Number Generator Using Logic ICs by Tim Blythman
Project: PRECISION ‘AUDIO’ SIGNAL AMPLIFIER by Jim Rowe
Project: ARDUINO-BASED DIGITAL AUDIO MILLIVOLTMETER by Jim Rowe
Feature: Circuit Surgery by Ian Bell
Feature: Practically Speaking by Mike Hibbett
Feature: Max’s Cool Beans by Max the Magnificent
Feature: Make it with Micromite by Phil Boyce
Feature: Pedal Power Station! by Julian Edgar
PCB Order Form: Max’s Cool Beans by Max the Magnificent
Feature: AUDIO OUT by Jake Rothman
Advertising Index

This is only a preview of the October 2020 issue of Practical Electronics.

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BACK ISSUES Circuit Surgery Cool Beans Transistor theory and practice Auto gadgets Designing a 4-bit computer WIN! Microchip PIC-IoT WG Development Board WIN! GPS-synced Frequency Reference Exciting new series on stepper motors DCC Programmer for Decoders WIN! $50 of PCB prototyping from PCBWay LS3/5A Crossover design Opto-isolated Mains Relay See our Super Summer Sale! PLUS! Net Work – Look back to the start of the Internet Techno Talk – Two cheers for 5G The Fox Report – Finding free 4K content via satellite www.epemag.com <at>practicalelec Oct 2019 £4.65 10 9 772632 573009 practicalelectronics JANUARY 2020 – N NE E EW W P E D NA – ES M IG E N ! The UK’s premier electronics and computing maker magazine LS3/5a crossover Electronic Building Blocks Circuit Surgery Micromite Understanding Logic levels Digital mains meter Serial data communication WIN! Microchip MPLAB PICkit 4 In-Circuit Debugger Tiny PIC circuits Awesome Audio DSP Bipolar stepper motor drivers WIN! $50 of PCB prototyping from PCBWay Isolated Serial Link Controlling an 8×8 LED matrix Using your Maximite PLUS! PIC n’ Mix – Temperature and humidity sensing Net Work – The growth of smart metering Techno Talk – Energy from the heavens: at night! www.epemag.com <at>practicalelec MARCH 2020 PROJECTS • Diode Curve Practical Electronics Plotter • Audio DSP – Part 3 • Steam Train Whistle / Diesel Horn Sound Generator • Using Cheap Asian Electronic Modules – Part 22 FEATURES • The Fox Report • Techno Talk • Net Work • PIC n’ Mix • Circuit Surgery • Audio Out • Make it with Micromite • Visual programming with XOD • Max’s Cool Beans • Electronic Building Blocks Jan 2020 £4.99 01 9 772632 573016 practicalelectronics Circuit Surgery Micromite Differential amplifiers Fun with LEDs Fonts, files and temperature Choosing and identifying stepper motors Opto-isolated Mains Relay WIN! Tinnitus & Insomnia Killer Electronic compasses Microchip SAM R30M Xplained Pro Evaluation Kit WIN! Build your own retro Colour Maximite Computer! GPS-synced Frequency Reference PLUS! Net Work – Surveillance tech Techno Talk – VT100 Emulator Audio Out – Speaker building Nov 2019 £4.99 WIN! 11 $50 of PCB prototyping from PCBWay <at>practicalelec 9 772632 573016 practicalelectronics The UK’s premier electronics and computing maker magazine Audio Out Wavecor crossover Electronic Building Blocks Circuit Surgery Micromite Interfacing different logic levels Reusing batteries Build an LED Mood Light! Low-cost digital audio player Building your Audio DSP Maximite: graphics, programs and hardware control WIN! Microchip MCP3564 ADC Evaluation Board for PIC32 MCUs Bipolar stepper motor driver modules USB Keyboard and Mouse Adaptor PLUS! Feb 2020 £4.99 Practically Speaking – PCB digital microscope Net Work – Launch of the new PE shop Techno Talk – Novel battery technology www.epemag.com <at>practicalelec 02 9 772632 573016 practicalelectronics MAY 2020 Audio Out Analogue noise generator Practically Speaking Intro to SMD Circuit Surgery Visual programming for Arduino with XOD WIN! Introduction to FPGAs with the low-cost iCEstick Microchip Curiosity PIC32MZ EF Dev Board 2.0 Adding colour touchscreens Fascinating display system you can build WIN! Touchscreen and Micromite Remote control for the ultra-low-distortion Preamplifier PLUS! Net Work – Cookies, data trails and security options Max’s Cool Beans – Best-ever flashing LEDs! Techno Talk – A spot of nostalgia www.epemag.com Micromite Problems with SPICE simulations <at>practicalelec Apr 2020 £4.99 04 9 772632 573016 practicalelectronics – N NE E EW W P E D NA – ES M IG E N ! JULY 2020 PROJECTS • Speech Practical Electronics Synthesiser with the Raspberry Pi Zero • AD584 Precision Voltage References • AM/FM/CW Scanning HF/VHF RF Signal Generator – Part 2 • High-current Solid-state 12V Battery Isolator FEATURES • Techno Talk • Net Work • PIC n’ Mix • Circuit Surgery • Audio Out • Make it with Micromite • Max’s Cool Beans • Electronic Building Blocks The UK’s premier electronics and computing maker magazine Audio Out Building the fabulous analogue PE Mini-organ PIC n’ Mix New series: Introducing the PIC18 family Circuit Surgery LTspice sources and waveforms WIN! Microchip PIC-BLE Development Board WIN! Build the PE Mini-organ! Animated eyes for your Micromite Robot Buggy High-current Solid-state 12V Battery Isolator Speech Synthesiser with the Raspberry Pi Zero PLUS! Net Work – Two-Factor Authentication security Max’s Cool Beans – Nifty NeoPixels Techno Talk – Silly stuff for the silly season Electronic Building Blocks – Modifying solar lights www.epemag.com <at>practicalelec Jul 2020 £4.99 07 9 772632 573016 practicalelectronics PROJECTS • 433MHz Wireless Data Range Extender • Bridgemode Audio Amplifier Adaptor • iCEstick – Part 2 • Ultra-lowdistortion Preamplifier with Tone Controls – Part 2 FEATURES • The Fox Report • Techno Talk • Net Work • PIC n’ Mix • Circuit Surgery • Audio Out • Make it with Micromite • Max’s Cool Beans • Visual programming with XOD Practical Electronics The UK’s premier electronics and computing maker magazine Audio Out Amazing analogue noise sound effects PIC n’ Mix Circuit Surgery Audio Spectrum Analyser Impedance measurement Arduino/XOD Programmable flexible timer WIN! Visual programming for Arduino with XOD Microchip MPLAB ICD 4 In-Circuit Debugger WIN! Superb bridge-mode amplifier Build a Micromite programmable robot buggy Using FPGAs with iCEstick Remote control for ultra-low-distortion Preamplifier 433MHz Repeater PLUS! May 2020 £4.99 Net Work – Live on-demand digital terrestrial TV Max’s Cool Beans – Even more flashing LEDs! Techno Talk – Is IoT risky? www.epemag.com <at>practicalelec 05 9 772632 573016 practicalelectronics AUGUST 2020 PROJECTS • Micromite LCD Practical Electronics BackPack V3 • Steering Wheel Audio Button to Infrared Adaptor • Junk Mail Repeller • Class-D Stereo Plus Subwoofer Amplifier FEATURES • The Fox Report • Techno Talk • Net Work • Circuit Surgery • Audio Out • Make it with Micromite • Practically Speaking • Max’s Cool Beans • Electronic Building Blocks – N NE E EW W P E D NA – ES M IG E N ! – N NE E EW W P E D NA – ES M IG E N ! Practical Electronics The UK’s premier electronics and computing maker magazine – N NE E EW W P E D NA – ES M IG E N ! APRIL 2020 PROJECTS • Ultra-lowdistortion Preamplifier with Tone Controls – Part 1 • iCEstick – Part 1 • Flip-dot Display FEATURES • Techno Talk • Net Work • Practically Speaking • Circuit Surgery • Audio Out • Make it with Micromite • Max’s Cool Beans • Visual programming with XOD Electronic Building Blocks www.epemag.com PROJECTS • Audio DSP – Practical Electronics Part 1 • Isolated Serial Link • Four-channel High-current DC Fan and Pump Controller – Part 2 • Colour Maximite Computer – Part 3 FEATURES • The Fox Report • Techno Talk • Net Work • PIC n’ Mix • Using Stepper Motors • Circuit Surgery • Audio Out • Make it with Micromite • Max’s Cool Beans • Electronic Building Blocks Audio Out FEBRUARY 2020 PROJECTS • Audio DSP – Part Practical Electronics 2 • Motion-Triggered 12V Switch • USB Keyboard and Mouse Adaptor for Micros • Using Cheap Asian Electronic Modules – Part 21 • Colour Maximite Computer – Part 4 FEATURES • The Fox Report • Techno Talk • Net Work • Practically Speaking • Using Stepper Motors • Circuit Surgery • Audio Out • Make it with Micromite • Max’s Cool Beans • Electronic Building Blocks The UK’s premier electronics and computing maker magazine PIC n’ Mix Connecting I2C LCD displays The UK’s premier electronics and computing maker magazine Audio Out Super low-noise power supply for your theremin We can supply back issues of PE/EPE by post. We stock magazines back to 2006, except for the following: 2006 Jan, Feb, Mar, Apr, May, Jul 2007 Jun, Jul, Aug 2008 Aug, Nov, Dec 2009 Jan, Mar, Apr 2010 May, Jun, Jul, Aug, Oct, Nov 2011 Jan 2014 Jan 2018 Jan, Nov, Dec 2019 Jan, Feb, May, June Issues from Jan 1999 are available. If we do not have a a paper version of a particular issue, then a PDF can be supplied via download or on disc. See website for details and prices: www.electronpublishing.com/product-category/pe-back-issues Please make sure all components are still available before commencing any project from a back-dated issue. Getting to grips with surface-mount ICs Micromite LCD BackPack V3 WIN! Microchip J-32 Debug Probe WIN! Bargain Class-D Amplifier Circuit Surgery LTspice – Using behavioural sources Don’t miss our Super Summer Sale! Steering Wheel Audio Button Adaptor Ping-pong ball lighting! PLUS! IR control of Robot Buggy Low-noise theremin PSU Net Work – Yubico’s latest Security Key Techno Talk – The benefits of hindsight Electronic Building Blocks – Battery capacity tester www.electronpublishing.com BACK ISSUES – ONLY £5.95 £5.95 per issue for UK incl p&p  £9.95 Europe Air Mail  £11.95 ROW Air Mail Practically Speaking <at>practicalelec Aug 2020 £4.99 08 9 772632 573016 practicalelectronics – N NE E EW W P E D NA – ES M IG E N ! Practical Electronics The UK’s premier electronics and computing maker magazine Audio Out Cable and connectors Electronic Building Blocks Circuit Surgery Micromite Understanding Active loads Budget data logger Serial data communication WIN! Microchip 1 Msps SAR ADC Evaluation Kit Extremely Sensitive Magnetometer WIN! Automotive Fan/ Pump Controller Stepper motor basic drivers Useless Box! Clever and fun! Building the Colour Maximite Computer Dec 2019 £4.99 PLUS! 12 Net Work – Freeview frustration Techno Talk – The great landline switchover www.epemag.com <at>practicalelec 9 772632 573016 practicalelectronics – N NE E EW W P E D NA – ES M IG E N ! Electronic Building Blocks MMBASIC graphical commands The UK’s premier electronics and computing maker magazine Audio Out Wavecor crossover Electronic Building Blocks Circuit Surgery Micromite Strain gauge circuit revisited Loud voice alarm Build this superb diode curve plotter Adding Bluetooth functionality Exciting new series! Visual programming for Arduino with XOD WIN! Microchip SAM D20 Xplained Pro Evaluation Kit Bluetooth – create wireless projects for your Micromite Awesome Audio DSP Toot toot! Steam whistle generator PLUS! PIC n’ Mix – Audio Spectrum Analyser design update Net Work – Two-factor authentication and SSDs Techno Talk – Boom time for battery traction www.epemag.com JUNE 2020 PROJECTS • AM/FM/CW Scanning HF/VHF RF Signal Generator – Part 1 • Low-cost 3.5-inch touchscreen for the Arduino or Micromite • Ultralow-distortion Preamplifier with Tone Controls – Part 3 FEATURES • Techno Talk • Net Work • Practically Speaking • Circuit Surgery • Audio Out • Make it with Micromite • Max’s Cool Beans SEPTEMBER 2020 PROJECTS • Ultrabrite LED Pushbike Light • The Micromite Explore-28 • Three Stepper Motor Drivers • Cheap and easy compact speaker enclosures FEATURES • Techno Talk • Net Work • Circuit Surgery • Audio Out • PIC n’ Mix • Make it with Micromite • Max’s Cool Beans <at>practicalelec Mar 2020 £4.99 03 9 772632 573016 practicalelectronics Practical Electronics – N NE E EW W P E D NA – ES M IG E N ! Micromite DECEMBER 2019 PROJECTS • Extremely Sensitive Magnetometer • Useless Box! • Four-channel High-current DC Fan and Pump Controller • Colour Maximite Computer – Part 2 FEATURES • The Fox Report • Techno Talk • Net Work • Circuit Surgery • Using Stepper Motors • Audio Out • Make it with Micromite • Max’s Cool Beans • Electronic Building Blocks The UK’s premier electronics and computing maker magazine Audio Out Play with style – the all analogue PE Mini-organ Practically Speaking Getting to grips with surface-mount technology Circuit Surgery Understanding Class-D, G and H amplifiers WIN! Microchip PIC-IoT WA Development Board WIN! Six-input Stereo Audio Selector Musical fun with the PE Mini-organ! Assemble your Micromite Robot Buggy Using low-cost Arduino 3.5-inch touchscreens PLUS! Net Work – Apps, security and welcome diversions Max’s Cool Beans – Home working and flashing LEDs! Techno Talk – Beyond back-of-the-envelope design www.epemag.com – N NE E EW W P E D NA – ES M IG E N ! The UK’s premier electronics and computing maker magazine NOVEMBER 2019 PROJECTS • Programmable Practical Electronics GPS-synced Frequency Reference – Part 2 • Cheap Asian Electronic Modules – Part 20 • Tinnitus & Insomnia Killer • Colour Maximite Computer – Part 1 FEATURES • Techno Talk • Net Work • Using Stepper Motors • Circuit Surgery • PIC n’ Mix • Audio Out • Make it with Micromite • Max’s Cool Beans • Electronic Building Blocks – N NE E EW W P E D NA – ES M IG E N ! Practical Electronics – N NE E EW W P E D NA – ES M IG E N ! OCTOBER 2019 PROJECTS • Programmable GPS-synced Frequency Reference – Part 1 • Digital Command Control Programmer for Decoders • Opto-isolated Mains Relay FEATURES • The Fox Report • Techno Talk • Net Work • Using Stepper Motors • Circuit Surgery • Audio Out • Make it with Micromite • Max’s Cool Beans • Electronic Building Blocks – N NE E EW W P E D NA – ES M IG E N ! Practical Electronics <at>practicalelec Jun 2020 £4.99 06 9 772632 573016 practicalelectronics Practical Electronics The UK’s premier electronics and computing maker magazine Flowerpot speakers! A low-cost route to high-quality Hi-Fi PIC n’ Mix Software tools for the PIC18F Ultrabrite LED bike light WIN! Microchip Explorer 16/32 Development Kit WIN! Circuit Surgery Understanding Differential amplifiers Don’t miss our Super Summer Sale! Meet the Micromite Explore-28 Mastering stepper motor drivers Robot Buggy Ultrasound sensing! Building the Low-noise theremin PSU PLUS! Cool Beans – Even cooler ping-pong ball lights! Net Work – IP security cameras Techno Talk – The perils of an enquiring mind... www.electronpublishing.com <at>practicalelec Sep 2020 £4.99 09 9 772632 573016 practicalelectronics ORDER FORM – BACK ISSUES Back issues required (month / year) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tel: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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