Category Archives: Products
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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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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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
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
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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Signals from Space! (part 1)
I attempt to receive weather satellite signals with my software radio prototype — with surprisingly good results! Continue reading
Software-Defined Radio Receiver: first signals!
I’m building a 100MHz to 1GHz software-defined radio receiver, trying to keep it as small and affordable as possible, while still being very flexible. Today my prototype hardware produced its first signals! Continue reading
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FM Synthesis!
More progress on my “audio Arduino” prototype: I got FM (frequency modulation) synthesis working a few days ago, but it didn’t sound terribly interesting. Then I spent a couple of days building C headers for the STM32F205 processor (libopenstm32 and … Continue reading
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