3 ms·

Etch-A-SDR: Odroid C1, Teensy 3.1 and RTL-SDR

53 points by tlrobinson 11y ago

pygy_ 11y ago
The Teensy boards[0] are the work of a single, dedicated engineer. While their design is proprietary, they are compatible with the Arduino IDE, to which Paul Stoffregen (PJ from PJRC) contributes substantially[1]. Unlike both Arduino entities[2, 3], his track record is clear from ethical shenanigans. --- 0. https://www.pjrc.com/teensy/index.html https://www.pjrc.com/teensy/index.html 1. http://www.pjrc.com/teensy/arduino_contrib.html http://www.pjrc.com/teensy/arduino_contrib.html 2. https://news.ycombinator.com/item?id=11212021 https://news.ycombinator.com/item?id=11212021 3. https://news.ycombinator.com/item?id=9231708 https://news.ycombinator.com/item?id=9231708
baldgeek 11y ago
Looks cool, hate to look a gift horse in a mouth. Can I get a part list/build plans for the HW side. This might be what actually gets me into playing with SDR. :)
- devnulling 11y ago
  Hi, I made the Etch-A-SDR. Found this thread after seeing the stars on the Github project jump (Thanks HN!). The hardware used is: - Acrylic sheet - Odroid C1 (There are more powerful Odroids now, either the C2 [0] or XU4 [1]) - RTL-SDR - GY-521 6DOF - Teensy 3.1 - Rotary Encoders (adafruit) - Push buttons (adafruit) - 10.1" TFT screen with speakers (adafruit) - Ethernet / USB bulkheads (adafruit) - MCX to SMA bulkhead (ebay) - misc parts ( screws, stand-offs, etc from home depot) - Knobs from a real Etch-a-Sketch I presented this at the monthly Cyberspectrum SDR Meetup [2] in San Francisco, the slides, which include pictures of inside the Etch-A-SDR, and an overview of the hardware/software can be seen here [3], and a live stream recording here [4]. If you're just getting started with SDR, I would suggest setting it up on regular computer vs starting with running it on an ARM type board, SDR is very resource hungry, and runs better on a normal machine. There is a big community over at the r/rtlsdr [5] subreddit. SDR is a lot of fun, and opens up the huge world of RF, and it is very inexpensive to get started. [0] - http://ameridroid.com/products/odroid-c2 http://ameridroid.com/products/odroid-c2 [1] - http://ameridroid.com/products/odroid-xu4 http://ameridroid.com/products/odroid-xu4 [2] - http://www.meetup.com/Cyberspectrum/ http://www.meetup.com/Cyberspectrum/ [3] - https://github.com/devnulling/etch-a-sdr-presentation https://github.com/devnulling/etch-a-sdr-presentation [4] - https://www.youtube.com/watch?v=tG70c3Zadek https://www.youtube.com/watch?v=tG70c3Zadek [5] - https://www.reddit.com/r/rtlsdr https://www.reddit.com/r/rtlsdr

53 points by tlrobinson 11y ago

pygy_ 11y ago

The Teensy boards[0] are the work of a single, dedicated engineer. While their design is proprietary, they are compatible with the Arduino IDE, to which Paul Stoffregen (PJ from PJRC) contributes substantially[1]. Unlike both Arduino entities[2, 3], his track record is clear from ethical shenanigans. --- 0. https://www.pjrc.com/teensy/index.html https://www.pjrc.com/teensy/index.html 1. http://www.pjrc.com/teensy/arduino_contrib.html http://www.pjrc.com/teensy/arduino_contrib.html 2. https://news.ycombinator.com/item?id=11212021 https://news.ycombinator.com/item?id=11212021 3. https://news.ycombinator.com/item?id=9231708 https://news.ycombinator.com/item?id=9231708

baldgeek 11y ago

Looks cool, hate to look a gift horse in a mouth. Can I get a part list/build plans for the HW side. This might be what actually gets me into playing with SDR. :)

devnulling 11y ago
Hi, I made the Etch-A-SDR. Found this thread after seeing the stars on the Github project jump (Thanks HN!). The hardware used is: - Acrylic sheet - Odroid C1 (There are more powerful Odroids now, either the C2 [0] or XU4 [1]) - RTL-SDR - GY-521 6DOF - Teensy 3.1 - Rotary Encoders (adafruit) - Push buttons (adafruit) - 10.1" TFT screen with speakers (adafruit) - Ethernet / USB bulkheads (adafruit) - MCX to SMA bulkhead (ebay) - misc parts ( screws, stand-offs, etc from home depot) - Knobs from a real Etch-a-Sketch I presented this at the monthly Cyberspectrum SDR Meetup [2] in San Francisco, the slides, which include pictures of inside the Etch-A-SDR, and an overview of the hardware/software can be seen here [3], and a live stream recording here [4]. If you're just getting started with SDR, I would suggest setting it up on regular computer vs starting with running it on an ARM type board, SDR is very resource hungry, and runs better on a normal machine. There is a big community over at the r/rtlsdr [5] subreddit. SDR is a lot of fun, and opens up the huge world of RF, and it is very inexpensive to get started. [0] - http://ameridroid.com/products/odroid-c2 http://ameridroid.com/products/odroid-c2 [1] - http://ameridroid.com/products/odroid-xu4 http://ameridroid.com/products/odroid-xu4 [2] - http://www.meetup.com/Cyberspectrum/ http://www.meetup.com/Cyberspectrum/ [3] - https://github.com/devnulling/etch-a-sdr-presentation https://github.com/devnulling/etch-a-sdr-presentation [4] - https://www.youtube.com/watch?v=tG70c3Zadek https://www.youtube.com/watch?v=tG70c3Zadek [5] - https://www.reddit.com/r/rtlsdr https://www.reddit.com/r/rtlsdr