element14 Presents The Ben Heck Show. . . and beyond!

I’ve been invited to create content for element14, the community marketing arm of electronics distributor Newark as their long-time “face”, Mr. Benjamin Heckendorn is retiring from his eponymous electronics hacking show. I, along with several other very talented creators, will be producing content under the element14 Presents banner on occasion starting next month!

The best comment on the video, by far.

In addition to my contributions to the new show, I will be producing some behind-the-scenes and other derivative content in addition to my regular production content here and on YouTube, so expect to see more things posted more regularly on all my outlets!

element14 Presents: Project Pripyat – DIY Geiger Counter

This is my solo debut as part of the element14 Presents team, and I’m extremely excited to be on this journey.

Matt Eargle is a cold war nut who loves historical technologies. He just happens to have some old Soviet surplus Geiger tube sitting around. He’ll use it to build his own take on a Geiger counter. It will be something like an updated CDV 700 series. The original CDV-700 Series models were in production from 1954 until 1974. Later XXX series models were produced well into the 1980s. In order to build a homebrew version of a Geiger counter, he’ll need a couple of components in addition to his Geiger tube. A Geiger tube has a sealed vial inside a sealed glass tube containing an inert gas. You take that and apply a really high potential, the one he’s using is about 400 volts. When your particle comes in and strikes the nucleus of the gas inside, it temporarily ionizes that gas, just enough to allow some of that voltage through that it can be measured.

He’ll need a high voltage source to feed his tube. The cathode of the tube will run into an Arduino. Running the high voltage source through batteries will require a transformer. The transformer will require an AC current. The easiest way to create an AC current would be to create a little oscillator with 555 timers and run that into an inductor. The 555 timer will set up in astable mode to produce an alternating signal at 60 Hz that will get amplified by a MOSFET before running into the transformer. The current from the transformer will go into a diode laddering system which will drive the GM tube. The signal from the Geiger tube will run into an NPN transistor. The output pulse of the tube is around 200V, so it needs to have some level of conditioning before it can be counted by the Arduino. Once the output is run into ground they’ll have a digital signal that they can feed back into the Arduino.

He tests the circuit in a breadboard to make sure it works. The output of the Geiger tube is hooked into an oscilloscope. Matt uses an old aircraft instrument, an ADF with a glow in-the-dark radium dial to test to ensure that a signal is outputted to the scope. Now that we know the signal is working, we can condition that signal to create a digital pulse that we can measure and count with the Arduino. The tube output runs through a voltage divider so that it doesn’t fry the transistor. All that’s left is to 3D print some parts and do some coding using the Arduino IDE.

element14 Presents: Project Caroline — Raspberry Pi Pirate Radio Station

Matthew relives some of his youthful hacking by dabbling in a little “pirate radio” broadcasting. In this video, he builds a handheld FM transmitter from some salvaged parts and a Raspberry Pi. The Pi uses a piece of software to convert wav files to frequency-modulated signals emitted from GPIO pin 7. To improve transmission quality and prevent undesired signals, Matthew also designs and builds a band pass filter and seals everything in a shielded case.

Get a link to download the full pirate broadcast by entering your email below!

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How To Build A Raspberry Pi LED Blinky For BOINC [Trailer]

The Berkley Open Infrastructure for Network Computing (BOINC) allows citizens to donate their spare computing power to help scientific research. In this element14 Presents project inspired by the 2007 Boston Mooninite Panic, we’re going to build a basic electronics hacker project: an LED blinky that not only makes cool designs, but also contributes computing power to BOINC by means of a solar-powered Raspberry Pi!

Watch the full video at element14 Presents: https://www.youtube.com/watch?v=cCRSz…

Music: “Starlight (beta)” by Anders Enger Jensen, used with permission.

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Tech teardowns, repairs, and reviews; sketches; how-to; games; and lots of other interesting geekery. There’s something new every week! Thanks for watching, and be sure to like, share, and subscribe!

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element14 Presents — Project Mooninite: Raspberry Pi Asteroid Tracker

Whether you call them “blinkies”, “throwies”, “sparklers”, or anything else, LED art is an interesting nexus of street art and hacker culture.

Connect with Matt on element14 and find the B.O.M at: http://bit.ly/2C2dhEt

Events such as DEFCON even have exhibitions for the most creative blinky designs while maker storefronts sell them in every conceivable shape. In this video, Matt collaborates with his friends at the National Upcycled Computing Collective to build a solar-powered “smart” blinky that not only looks cool at night, but contributes its computing power to a worldwide network that’s looking for disease cures, extraterrestrial intelligence, rogue asteroids, and more!

Element14: Twilight Zone Prop Replica

Matt is a huge fan of the Twilight Zone, so for Halloween, he’s decided to build a classic prop from the old series with a modern twist! The original Mystic Seer was a coin-operated fortune telling machine created for the 1960 episode “Nick of Time”. Will this new, electronic fortune teller actually predict the future? Supplemental Content and B.O.M. on element14: http://bit.ly/2O5fz6x

Unboxing The Most Useless IoT Device Ever

Clem Mayer challenged me to add more useless “functionality” to the “Most Useless IoT Device Ever” on Element14 Presents, but the IoT Rock had to get from Austria to California first!

These are my initial reactions to the Cold War-themed care package my European colleague sent me!

Check out Mayer Makes

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