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SMARTTHINGS AND THE DEVICE MAKER

This project will really come home to roost.

Here’s a home automation platform with a cloud-based development environment that lets you create custom apps and microcontroller-based devices to talk to over Zigbee that you can control with your smartphone.

REVIVING A HI-FI CLASSIC: THE HARMAN/KARDON A-401 STEREOPHONIC CONTROL AMPLIFIER

Vintage hi-fi repair is a fantastic hobby.

Vintage stereo equipment just has a special sound and presence that are worth preserving. Follow along on a recent restoration of a 38 year old amp.

Restore It Now!

Looking for the BEST Arduino Kits available? Check out the Dr.Duino Pioneer & Explorer Editions.

Dr.Duino kits are simply the best way to get into the awesome world of Arduino. They are easy to use and jam packed with up to 14 FUN and educational code samples & projects.

For a limited time, get an additional 5% OFF a Dr.Duino Explorer, Explorer PLUS Or Pioneer PLUS Editions.

Get Details Here!

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DIY BIOTECH: A SPECTROPHOTOMETER FOR MEASURING BACTERIAL GROWTH

Work with a spectrophotometer using E Coli.

Build an Arduino-based spectrophotometer to explore how the optical density of bacteria suspended in a liquid can be used to measure the rate and stage of bacteria growth.

CAN YOU TRUST YOUR VOLTMETER?

You can easily build or buy a perfectly good IC voltage reference and set your mind at ease about the accuracy of your meters.

Sometimes I wonder which of my portable digital voltmeters I can trust — the B&K, Fluke, or Amprobe. Usually, they’re pretty close but it bugs me not knowing whether they are right on the nose. Fortunately, these days, there are a number of very accurate voltage reference circuits that you can build or purchase for a few dollars.

Theremin MIDI Kit

The Super Awesome Cube Kit

Read the article about it!

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951.371.8497 | editor | www.nutsvolts.com

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Amateur Radio Weekly Newsletter – Week of November 14, 2020

Amateur Radio Weekly Newsletter

Ham radio news, commentary, giveaways, and more!
Celebrating 25 years of service – 1995-2020
Over 8,000 subscribers!
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Saturday, November 14, 2020

How About Parks On The Air?
Recently, I gave a presentation to the ARROW radio club in Ann Arbor, MI on the topic of “Having Fun With VHF”. I’ve given this talk several times now, highlighting some of the topics in my book, VHF, Summits and More: Having Fun With Ham Radio. When I discussed my Summits On The Air (SOTA) … Continue reading How About Parks On The Air? →

The post How About Parks On The Air? appeared first on The KØNR Radio Site.

ICQ Podcast Episode 337 – Announcing Homebrew Hero 2020
In this episode, Martin M1MRB is joined by Leslie Butterfield G0CIB, Dan Romanchik KB6NU, Edmund Spicer M0MNG and Matthew Nassau M0NJX to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief and this episode’s features i…

LHS Episode #378: Space Junk
Welcome to the 378th installment of Linux in the Ham Shack. In this episode, the hosts discuss lots of space- and satellite-related topics, FCC application fees, Dell and security, RISC, …

RFI issue solved!
Back in May I posted regarding an RFI issue I was having and at the time I thought is was the neighbors heat pump. A few weeks ago my neighbor was away on business and his heat pump was off but my RFI was still present and more of it! I took my Eaton …

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Matt W1MST
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editor
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How to set up your own ham radio blog – Get started in less than 15 minutes

AmateurRadio.com
P.O. Box 45
Hampden ME 04444
USA

USB, LEDs, and Some Sensors, NeoPixel LED Tree, DIY Biotech, Brain Hacking

Newsletter #196

USB, LEDs, AND SOME SENSORS

Try something different with LEDs!

Turning LEDs on and off is fun and all, but why not add a sensor or two that would be useful for something other than the usual light show?

Looking for the BEST Arduino Kits available? Check out the Dr.Duino Pioneer & Explorer Editions.

Dr.Duino kits are simply the best way to get into the awesome world of Arduino. They are easy to use and jam packed with up to 14 FUN and educational code samples & projects.

For a limited time, get an additional 5% OFF a Dr.Duino Explorer, Explorer PLUS Or Pioneer PLUS Editions.

Get Details Here!

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BUILD A NEOPIXEL LED TREE

Take your next LED Christmas tree up a notch or two with multiple RGB rings of LEDs!

The NeoPixel LED tree is beautifully made from laser cut 3 mm Baltic birch plywood and is powered by a NodeMCU Amica ESP8266 32-bit Wi-Fi enabled processor. With 93 individually addressable NeoPixel LEDs, and remote controllable from any browser on your Wi-Fi network, this tree can’t be topped!

Build It Now!

DIY BIOTECH: OPEN SOURCE PCR THERMOCYCLER

#2 in a series of DIY Biotech articles.

In this DIY Biotech article, we’ll look at an Open Source Polymerase Chain Reaction (PCR) Thermocycler kit. In addition to learning about DNA amplification, we’ll cover thermal sensing, thermal resistance, the thermoelectric effect, and PID controllers.

Get introduced to the power and versatility of FPGA with the Arty S7.

The featured Spartan-7 FPGA offers size, performance, and cost-conscious design engineered with the latest technologies from Xilinx along with a wide variety of I/O and expansion options.

Order Yours Today!

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tDCS — BRAIN HACKING?

Experimenting with transcranial direct current stimulation (tDCS).

I’ve been following the exciting research in neurostimulation using transcranial direct current stimulation (tDCS), so I thought I’d design a simple circuit to try it out myself. However, even though this technology is over 100+ years old and every study seems to tout the safety of these tiny currents, I want to emphasize that this is certainly a “fringe” electronic project in every sense! Proceed with caution!

Theremin MIDI Kit

The Super Awesome Cube Kit

Read the article about it!

Nuts & Volts Magazine | 2279 Eagle Glen Pkwy #112-481, Corona, CA 92883
951.371.8497 | editor | www.nutsvolts.com

T & L Publications, Inc, 2279 Eagle Glen Pkwy #112-481, Corona, CA 92883, United States, 951 371-8497

Amateur Radio Weekly Newsletter – Week of November 7, 2020

Amateur Radio Weekly Newsletter

Ham radio news, commentary, giveaways, and more!
Celebrating 25 years of service – 1995-2020
Over 8,000 subscribers!
Unsubscribe

Saturday, November 7, 2020

Ham College 69
Ham College episode 69 is now available for download. Extra Class Exam Questions – Part 7. E2A Amateur radio in space: amateur satellites, orbital mechanics, frequencies and modes, satellite hardware, satellite operations. 1:02:05 Download YouTube

Ham College 70
Ham College episode 70 is now available for download. Extra Class Exam Questions – Part 8. E2B Television practices: fast scan television standards and techniques, slow scan television standards and techniques. 1:05:59 Download YouTube

HF SOTA on Threemile Mountain
For Summits On The Air activations, I have been exclusively using the VHF/UHF spectrum. I like the HF bands but for SOTA, I just think that Height Above Average Terrain (HAAT) of a summit is an ideal match for frequencies above 50 MHz. See Summits On The Air VHF Mountain Goat. After much nagging peer … Continue reading HF SOTA on Threemile Mountain →

The post HF SOTA on Threemile Mountain appeared first on The KØNR Radio Site.

Well here we go again!
On January 15th, 2020 I posted my short ride with Windows 10 installation on my PC. I was having issues with the upgrade and I decided to downgrade back to Windows 7 pro. It’s now 10 months later and I am getting the Windows 10 itch again. I was …

LHS Episode #376: The Future of Amateur Radio Deep Dive
Welcome to the 376th episode of Linux in the Ham Shack. In this episode, we talk with Sterling Mann, N0SSC, about his past involvement in the youth of amateur radio, …

LHS Episode #377: The Weekender LX
It’s time once again for The Weekender. This is our bi-weekly departure into the world of amateur radio contests, open source conventions, special events, listener challenges, hedonism and just plain …

Thank you for being an AmateurRadio.com reader and subscriber to the Amateur Radio Newsletter.

Do you like to write? Please consider submitting an article.

Matt W1MST
Managing Editor
editor
Twitter / Facebook

How to set up your own ham radio blog – Get started in less than 15 minutes

AmateurRadio.com
P.O. Box 45
Hampden ME 04444
USA

Power MOSFETs, VI Improves Experimentation, Synchronized Light Displays, USB Keyboard Input

Newsletter #195

POWER MOSFETs PART 2

Last time, we examined how to use power MOSFETs. This time, we’ll build two projects.

The first project is a transformerless voltage doubler that takes a DC voltage from 12 to 30 volts and doubles it. Unlike most other voltage doubler circuits, this design can supply amps of current. The second project uses a power MOSFET in a linear (rather than switching) application.

VIRTUAL INSTRUMENTS IMPROVE ELECTRONIC EXPERIMENTATION

How to get a bench full of test equipment for only a few hundred dollars.

If you’re a serious experimenter but don’t have a big enough budget for a scope (much less project parts or other test gear), then see how to get a bench full of test equipment for only a few hundred dollars utilizing virtual instruments.

SYNCHRONIZED LIGHT DISPLAYS

A straightforward approach for synchronizing Christmas lights to music.

Ready to give Clark Griswold a run for his money with your next holiday display? Then, you’ll appreciate these tips on the creative process and an overview of putting together a basic lighting system.

Light Things Up Now!

QUICK AND EASY USB KEYBOARD INPUT

Ever want a physical trigger to manipulate keyboard inputs? Then, this is the circuit for you.

This circuit is perfect for any application where you use a physical trigger to input data onto a computer. Read how it was implemented for video TIC-TAC-TOE and a bag toss game.

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Nuts & Volts Magazine | 2279 Eagle Glen Pkwy #112-481, Corona, CA 92883
951.371.8497 | editor | www.nutsvolts.com

T & L Publications, Inc, 2279 Eagle Glen Pkwy #112-481, Corona, CA 92883, United States, 951 371-8497

Amateur Radio Weekly Newsletter – Week of October 31, 2020

Amateur Radio Weekly Newsletter

Ham radio news, commentary, giveaways, and more!
Celebrating 25 years of service – 1995-2020
Over 8,000 subscribers!
Unsubscribe

Saturday, October 31, 2020

ICQ Podcast Episode 336 – HF-PRO-2-PLUS-T Antenna Review
In this episode, Martin M1MRB is joined by Chris Howard M0TCH, Martin Rothwell M0SGL, Ed Durrant DD5LP, Frank Howell K4FMH and Bill Barnes WC3B to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief and this episode’s f…

LHS Episode #375: No Deliveries
Welcome to the 375th installment of Linux in the Ham Shack. In this short-topics episode, the hosts discuss the FCC relocating its offices, Logbook of the World, the new FST4 …

Followup on computer issue.
A few days ago I posted regarding a computer issue I was having and asked for some input regarding it. On my blog, Amateur radio.com and a computer geek site I subscribe too I received lots of great feedback. The consensus see…

BCB DX + A (Possibly) Quieter Receive Antenna
The earlier very quiet geomagnetic field has produced some amazing propagation on the AM Broadcast Band for west coast DXers. Where local blowtorches don’t splatter the band, the past few nights have produced audible signals from several European…

Thank you for being an AmateurRadio.com reader and subscriber to the Amateur Radio Newsletter.

Do you like to write? Please consider submitting an article.

Matt W1MST
Managing Editor
editor
Twitter / Facebook

How to set up your own ham radio blog – Get started in less than 15 minutes

AmateurRadio.com
P.O. Box 45
Hampden ME 04444
USA

Power MOSFETs, DIY Biotech, Pocket-Sized Altair Computer, High Voltage Halloween

Newsletter #194

POWER MOSFETs

Part 1 will cover the theory behind these useful devices that have a lot of overlooked features.

Power MOSFETs (Metal Oxide Semiconductor Field Effect Transistors) have a lot of nice features that seem to be overlooked. Let’s take a close look at these useful devices, then in Part 2, we’ll use them to build a couple of handy projects.

DIY BIOTECH: HARNESSING BACTERIA FOR FERMENTATION

The first installment in a series of DIY Biotech articles..

Do-it-yourself biology is a growing biotechnological social movement in which individuals, communities, and small organizations study biology and life science using the same methods as traditional research institutions. In this first installment of a series of DIY Biotech articles, we’ll look at bacterial fermentation in the form of yogurt making. Not only is this a low-cost, low-risk entry into practical DIY biotech, you’ll learn a lot about monitoring pH as well.

BUILD A POCKET-SIZED ALTAIR COMPUTER

Make a retro PC that fits in an Altoids tin..

In the beginning, computers were very large and took up a lot of space. These days, single-board computers have gotten quite small. So, could an older Intel 8080 compatible computer be built to today’s smaller size standards? Why yes! It can!

Build It Now!

A HIGH VOLTAGE HALLOWEEN

A powerful Van de Graaff generator can make for some hair-raising Halloween fun!

When the trick-or-treaters reach your door, they may never be the same!

Shock Yourself Now!

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Super Awesome Cube Kit

Nuts & Volts Magazine | 2279 Eagle Glen Pkwy #112-481, Corona, CA 92883
951.371.8497 | editor | www.nutsvolts.com

T & L Publications, Inc, 2279 Eagle Glen Pkwy #112-481, Corona, CA 92883, United States, 951 371-8497

Amateur Radio Weekly Newsletter – Week of October 24, 2020

Amateur Radio Weekly Newsletter

Ham radio news, commentary, giveaways, and more!
Celebrating 25 years of service – 1995-2020
Over 8,000 subscribers!
Unsubscribe

Saturday, October 24, 2020

AmateurLogic 148: 15 Years of AmateurLogic
AmateurLogic.TV Episode 148 is now available for download. Celebrating 15 Years of AmateurLogic. Peter, VK3PB joins for an update. Tommy is Getting Started With The IC-705. George has some Simple and Useful Transistor Projects. Emile Calibrates With WWV Until It Hertz. Announcing the winner of the Icom IC-705 transceiver and prize package giveaway. 2:10:02 Download … Continue reading AmateurLogic 148: 15 Years of AmateurLogic

The return of…
Yes I am sort of back at it, but the family problems have not gone away.I am currently working on a signalling system for a local model railway club.This is a quite a big arrow to my bow, as I am not quite sure what I am doing yet? A big learning…

LHS Episode 373: GridTracker Deep Dive Part 3
Welcome to Episode 373 of Linux in the Ham Shack. In this episode, we have a roundtable discussion with several of the contributors to the GridTracker.org project. We explore all …

Hunting For NDBs in CLE261
AP-378 Mayne Island, BC It’s CLE time again!’CLE’s are ‘Co-ordinated Listening Events, and NDB DXers around the world focus their listening time on one small slice of the NDB spectrum.This time the hunting ground is from 19…

Busy busy busy!
Good afternoon to all my blog readers that is if you have not given up on me and my lack of posting? I have been on and off the radio but not really any news out this way. I will say that this retirement gig sure keeps me busy! I am the type of person …

Looking for input on my PC.
Today I started my PC and was greeted with the above screen……I did restart and all was ok but I was wanting to hear some of my readers wisdom as to what this could but and more importantly is it a sign of worse things to come?PC information i…

AmateurLogic 15th Anniversary Contest Winner
Congratulations to Clint Frost, W2BL of Owens Cross Roads, AL. Clint was randomly selected as winner of the AmateurLogic.TV 15th Anniversary contest! Thanks to all who participated in the contest and thanks for watching AmateurLogic. Watch our 15th an…

DX from Swain’s Field
Judy and I hiked up the range road behind Swain’s Farm this afternoon. What fantastic fall colors! I worked Trinidad and Texas with the KX3 and enjoyed one of the last warm days of the year. I tossed a wire into a giant maple tree at the edge of one of the hay fields. I […]

Propagation seems to be picking up.
Yesterday afternoon I was on FT8 and was spotted in Tasmania which for me was a great sign of propagation. Then a surprise showed up on the waterfall VK7AC from Tasmania was calling me. We exchanged reports I received -11 and sent -04.

LHS Episode #374: The Weekender LVIV
It’s time once again for The Weekender. This is our bi-weekly departure into the world of amateur radio contests, open source conventions, special events, listener challenges, hedonism and just plain …

Thank you for being an AmateurRadio.com reader and subscriber to the Amateur Radio Newsletter.

Do you like to write? Please consider submitting an article.

Matt W1MST
Managing Editor
editor
Twitter / Facebook

How to set up your own ham radio blog – Get started in less than 15 minutes

AmateurRadio.com
P.O. Box 45
Hampden ME 04444
USA

RF Oscillators, To Solder or Not, Using Interrupts, PumpkinFX, Trio de los Muertos

Newsletter #193

RF OSCILLATORS

Move up in frequency to the oscillators which make the signals that drive the ham’s wireless world.

Previously, we learned what makes an oscillator do what it does, and tried a simple low frequency example. Now, it’s time to move up to the oscillators which make the signals that drive the ham’s wireless world.

Power, portability, and performance

The PicoScope 3000 Series PC oscilloscopes are small, light, and portable, while offering the high-performance specifications required by engineers in the lab or on the move. These oscilloscopes offer 2 or 4 analog channels, plus an additional 16 digital channels on the MSO models.

More Details Here!

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TO SOLDER OR NOT

Don’t let soldering crimp your style.

As a young ham radio enthusiast, I was taught that, when it comes to high-current DC or any RF connection, use solder, regardless of the connector design. I was told in certain terms that crimp-on connectors were at best short-sighted time savers. The purported benefits of a soldered connection over simply twisting two conductors together — or even professional crimping — include longevity and increased reliability.

CONFIDENTLY USING INTERRUPTS IN YOUR MICROCONTROLLER PROJECT

Interrupts will become like the heartbeat of your microcontroller code, the regular rhythm at the core of your project.

Once you’ve become familiar with using interrupts, they will become like the heartbeat of your microcontroller code. You’ll find that they aren’t intimidating and you’ll wonder how you ever wrote code without them. You’ll start designing your projects around the interrupt and find that this simplifies the design and makes development faster.

PUMPKINFX

Learn how to animate a character’s mouth to match music or speech.

This Halloween, you can treat your tricksters to both dessert and a show. This project is easy to solder together and uses common tools to assemble. Best of all, the animations for the Halloween songs can be downloaded for free!

Animate It Now!

TRIO DE LOS MUERTOS

Purposeful seeming animation using motors … and psychology!

Mix animation and psychology with this fun prop to liven up your next “Day of the Dead” celebration.

Build It Now!