Everything for Electronics

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2020 Issue-4

Current Issue

The Electric Brains Of Yesteryear.

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Features

Repairing Circuit Boards

Repairing any kind of PCB can seem intimidating, but a methodical approach helps in finding and fixing problems quickly.


Creality Ender 5 Pro - A Review

The Creality Ender 5 Pro is a great 3D printer and one I can highly recommend.


A Shot in the Arm for Online VR and AR

With the current viral scare, shopping from home makes more sense.


UV Sanitizer 2: More Powerful Anti-Viral Chamber

Build a powerful anti-viral chamber based on narrow spectrum UV lamps.


Microchip Technology: Concepts, Products, Company

Everything you want to know about microchips, but were afraid to ask.


Teen Scientists Win $1.8 Million at Virtual Regeneron Science Talent Search 2020

Started in 1942 as the Westinghouse Science Talent Search, the Regeneron STS recognizes and empowers our nation’s most promising young scientists.


Visual Hexadecimal

Memory association techniques can ease the hexadecimal struggle.


Marvelous Magnetic Machines

See how to make magical motors from spare parts.


Beginning to Build with Tubes

There are a number of reasons to pursue tube-based projects.


Pinochle — Social Distance Style

What do you do when you can’t play cards together because of the pandemic? You figure out a way to do it electronically over Zoom!


Nextion Touch Screen Display — Part 5

Tutorial on including touch screens into your homebrew projects.


Some Simple Transistor and IC Circuits

Two Nuts & Volts questions motivated me to relearn about bipolar transistors.


An Introduction to the Parallax Propeller 2

There’s a lot to the new P2.


An Easy CATV Coax Antenna

Make antennas from unexpected materials.


Book Review: Ham Radio for Dummies

I can’t say enough good things about this book.


Book Review: Troubleshooting Electronic Circuits

This book is great for novices as well as seasoned experimenters.


Transformer Based Power for Nixies

Discover a new way to power your Nixies.


Static Discharge Helps “Cure” Audio Amplifier

This is the first time in 60 years that static electricity has ever HELPED with one of my projects.


Adding FM Capability to an All American Five AM Radio

Get FM capability without destroying the AM portion of your AA5 tube-type radio.


The Dr. Duino Explorer —  A Review

Make your life simpler with this “ready-to-roll” kit that is jammed-packed with features.


The Graphing Weather Station

This feature-rich unit builds on a previous project.


Battery Pack Failure Modes I Have Known

Is it memory effect or something else?


How You Can Intercept Secret Messages Being Sent to Spies

Unidentified radio broadcasts have been transmitting coded messages using numbers for years.


Microcontrollers, Software, and You — Part 3

Learn how to program microcontrollers.


The Quantum Integration Ecosystem

Simplify your IoT designs.


Remembering the Crystal Radio

Reminiscing about the good times that crystal radio sets provided.


Can’t Keyboard? Use Morse Code Instead

Can’t easily use a keyboard for text? Dot and dash it!


FM Reception with the GNU Radio Companion

Have fun building FM broadcast band receivers using GRC and learning about SDR.


Take the Z80 Challenge

Take the Z80 challenge and build something that’s both classic and modern at the same time.


Designing a Programmable DC-to-DC Converter

Design your own programmable DC-DC power supply.


Hacking LEDs and Arduinos: Instant LED Projects

Create bright, stunning colors by literally just plugging LEDs directly into the Arduino pins.


Nextion Touch Screen Display — Part 4

Tutorial on including touch screens into your homebrew projects.


Microcontrollers, Software, and You — Part 4

Learn how to program microcontrollers.


Oscillators, Statistics, Q, and Muons

Learn how to determine how well your oscillator is behaving.


An Altair Clone: Then and Now

The resources available today compared to what was available in 1977 make all the difference in projects.


Vintage Tek: Resolving Schematic Dissonance

Resolving Schematic Dissonance


The Electric Brains of Yesteryear

Get Geniacs and Brainiacs from decades ago working again.


Restoration of a Vintage Telefunken Jubilate 5161W AM/SW/FM Receiver

We continue our restoration series with a vintage Telefunken Jubilate receiver.


Restoration of an Abused 1965 McIntosh C22 All-Tube Preamp

Next in our restoration series, we’ll help out an abused 1965 McIntosh C22 all-tube preamp.


Restoring a Vintage Zenith Table Top AM/FM Receiver from the ‘60s

Explore the world of tube-type electronics by restoring a classic AM/FM receiver.


Restoration of a Vintage Zenith G725 AM/FM Receiver

Explore the world of tube-type electronics by restoring this domestic 1950’s AM/FM broadcast receiver: the Zenith G725.


eTracer Digital Tube Tester and Curve Tracer Kit

This time in our restoration series, we take on a digital tube tester and curve tracer kit.



Projects

High Voltage Op-amps, a Current Sensor, and a 32-bit Microcontroller: How About a Lab Power Supply?

This article will show you all the steps needed to design a programmable supply.


Build a Social Distance Detector/Monitor Using the Propeller 2

This device lets you know if folks are the proper distance away and if not, warns you before they get too close.


Build a Four-Wire Kelvin Low Resistance Ohmmeter

Overcome the limitations of two-lead/low resistance measurements with this easy-to-build four-lead Kelvin ohmmeter.


For Sale: Plant Monitor Kit - Find It in the NV Webstore

This kit takes a lot of the guesswork out of growing and maintaining indoor plants.


Kelvin Low Resistance Probe

Use this handy probe to check vias and traces on your circuit boards for their resistance.


How to Design a Microphone Amplifier

Here’s how I made an amplifier for a short-range public address speaker.


Super Awesome Cube Kit

Need soldering experience? This is the kit for you!


Build a Video Camera Using the ESP32-CAM Board

Use the ESP32-CAM module to make a video camera.


Measuring the Air Quality Index

Know if it’s safe to go outside.


Build a Ham Radio Voice Keyer for the Backpack

Save wear and tear on your vocal cords with this handy voice keyer.


Build the FLiPVox Laser Theremin

Here’s an analog style laser Theremin with its own built-in synthesizer.


Build an Inexpensive Magnetometer

Build a Hall-effect based magnetometer.


Build a Potentiometer Box

Now that I’ve built my potentiometer box for analog experimentation, my only regret is I didn’t do it sooner.


Build a Marquee Style Lighting Controller

Light up your life or business with this simple circuit.


Build a DotStar Light Painter

Use microcontrollers and a DotStar LED strip to develop custom photography from images you upload yourself.


Build the MEMO_BOX

Never forget to bring your phone or keys (or ?) with you with this fun device.


Build a Wireless Doorbell Pager for the Deaf

Here’s a simple circuit you can build for those who have lost their hearing.


Build a Freezer Alarm Circuit

Save your food with an alarm that alerts you if the freezer’s open.


Build a Digital Clock Family Using Nextion Displays

Digital clocks made with Nextion displays are a great design.


Build an Automatic Card Shuffler

Minimize the stress of shuffling and dealing cards for a large group of people.


Build a Super-Secret Invisible Burglar Alarm

Keep valuables safe and expose kids to technology at the same time.


Updating a General-purpose Programming System

It was clearly time for an update to my LP120 that I originally built 20 years ago.


Build an AM Transmitter for Use with Antique Radios

Use a low power crystal-controlled AM transmitter to broadcast age-appropriate material to your antique radio.


Build a DIY Electric Scooter

Here’s how I designed my only electric scooter from scratch.


Build the LASERVox MIDI Laser Theremin

Make music by waving your hands at one of the most expressive musical instruments ever built.


Build the Music Visualizer

An interactive LED display that reacts to music.


Build a Lunch Box Jukebox

Take your fun with you in an all-in-one entertainment system you build yourself.


Build a PICBall Machine

Make a PIC-powered old-school pinball machine.


Build an Instant Heart Pulse Sensor

Make your own version of a Fitbit of sorts for monitoring blood flow.


Build a $6 Desk Mic

Turn a cheap LED lamp into a usable microphone.


Build a Simple Isolator for Externally Powered Arduinos

Build an external power supply for your Arduino projects.


Departments

New Products
LEARNING/PROTOTYPING PLATFORMS FOR ARDUINO

New Products (04.2020)
Versatile DC Lab Power Supply, 4-CH Mixed-signal Oscilloscopes, Industrial Grade RF Coaxial Cable Assemblies, 6PC Fused Probe DMM Electrical Kit, High Power Dual Port AC/DC Charger, Rack Mount O'scope, Sunlight Readable LCD Display

New Products (05.2020)
Micro Stepper Actuators, HMI Software for Arduinos, Programmable USB Type-C Hub, Ultra-compact SIG Generator

New Products (03.2020)
High-res 2/4/8 Ch 20 MHz Oscope, Gerber File Option Added, Insulated Banana Jack Attenuators, Triple Output DC Power Supplies, AC-DC Controller Features Second Side MCU, SnapEDA Library Integration

New Products (02.2020)
Advanced 500 MHz O'Scopes, Vector Network Analyzer, Insulated Alligator Test Clips, Raspberry Pi Zero Battery IMU Board

New Products (01.2020)
MOD 0.8 Pinion Gear 36 Tooth, MOD 0.8 Pinion Gear 40 Tooth, MOD 1.25 Miter Gear 30 Tooth, 38 mm Pitch Steel Set Screw Sprocket, 8 mm Pitch Steel Set Screw Sprocket, Analyzers for High Channel Count Applications, Learning Platform for Arduino, Programmable USB Keyboard Controller Module, Picoscope 4-CH 500 MHz O'Scopes, Analog/Vector Sig Generators, High Current Test Leads.

The Joys of Retooling — Again
by Bryan Bergeron
Is retooling your shop and your mind to the world of vacuum tubes worth it?

When It Comes to Vintage Restoration, Beware of NOS
by Bryan Bergeron
Think twice before you dive into the often frenzied, hyperinflated world of NOS.

Electronics: What’s Important from the Outside Looking In?
by Bryan Bergeron
Here’s how to do good by your favorite electronics hobby.

Increasing Complexity: Unavoidable?
by Bryan Bergeron
Why do experimenters always feel the need to make things better?

All Dressed Up and Nowhere To Go
by Bryan Bergeron
So, what’s a ham dedicated to public service to do?

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