Tag Archives: prototype
My First 8-Layer PCB
I recently completed my first 8-layer PCB design, for Michael Ossmann’s Daisho project. Among the challenges: a 780-pin Altera Cyclone IV FPGA, a USB 3.0 chip with 0.8mm ball spacing, very high-speed parallel and serial buses, tight power constraints, and … Continue reading
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WiFi Module For $10?
A Wi-Fi module for $10? Texas Instruments CC3000! I’m getting to know it, and it’s a quirky product. Not as much the product, as how TI is choosing to support it. Continue reading
Monulator Design Evolution
Lots of Monulator comments, and progress on the next prototype design. Optional wireless!!! Continue reading
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The Monulator
Introducing The Monulator, a USB-controlled analog panel meter with RGB backlight. Continue reading
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Progress On My Software-Defined Radio
My homebrew software-defined radio tunes and captures 8MHz of FM broadcast spectrum, and I demodulate it using GNU Radio. 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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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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Audio Prototype is Alive!
I soldered up my prototype PCBs for my audio project today, and got some JTAG/SWD hardware help from Jim Larson. The net result is a partially-populated STM32F205 board that will talk to me via SWD and OpenOCD! Foreground (purple DorkbotPDX … Continue reading
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