Author Archives: jboone

Simple Chronulator Case Design

Taking a cue from Adam’s Chronulator case design, I experimented yesterday with a friend’s laser cutter, to make a Chronulator case that’s simple and easy for customers to assemble. Here’s the result: What Chronulator case designs would you like to … Continue reading

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Somebody Set Up Us The Bombulator!

Willamette Week features items from ADX Portland’s upcoming holiday gift sale. Continue reading

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Chronulator Review in Make Magazine’s Ultimate Kit Guide

Make: Magazine’s Ultimate Kit Guide is out, and the Chronulator kit received a great review. Continue reading

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ShareBrained at ADX Portland’s GIFTED Marketplace

Buy a Chronulator at ADX Portland’s GIFTED Maker’s Marketplace, December 17th from 11am to 5pm. Continue reading

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Software Radio Baseband Digitizer PCB

I’m plugging away at building an inexpensive, high-bandwidth software-defined radio receiver. I built a bunch of PLL+VCO boards, filter boards, and quadrature mixer boards. But I still don’t have a good ADC to sample the signals I’m receiving. No longer! … Continue reading

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ADF4350 VCO+PLL Breakout Board

I’m a software radio freak. When I first heard about the Analog Devices ADF4350, a PLL+VCO that can tune between 137.5 and 4400 MHz, I was obsessed with getting one and building it into my projects. Naturally, the first step … Continue reading

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Track The ISS Yourself Using PyEphem

How to track the International Space Station with twenty lines of Python code. Continue reading

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Chronulator code now on GitHub

ShareBrained projects are now on GitHub. ShareBrained sharing, properly now! Continue reading

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Signals from Space! (part 3)

In the last two parts, I used my homebrew software-defined radio to receive weather image signals from the NOAA-19 satellite and spent some time trying to calculate the satellite’s speed using frequency shift measurements. This time around, I’m going to … Continue reading

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Signals from Space! (part 2, and a Chronulator contest)

Quick recap: In part 1, I captured weather satellite signals with my software-defined radio prototype, using the audio input on my laptop. So, what can be done with these captured signals? The first thing I did after recording the NOAA-19 … Continue reading

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