Member Since: July 4, 2006

Country: United States

  • I plan to fly it on rockets and possibly balloons above 100k'.

    I suspect will see noise on rocket flight during motor burn. But expect should work well during coast, at apogee and during descent.

  • 3 cpm is about what I am seeing as a background count.

  • I like this sensor. Appears to work well with Arduino - particularly with interrupt based counter. The pulse width seems to encode photon energy. Calibrating now but initially matches background radiation.

  • Really need the RFM95 LoRa radio module. For the market where this module is appropriate (low data rate, low power, long distance) the LoRa radios get another 30 dB of link budget. Blows this away from a system perspective.

    Actually, RFM22b was used from space.

  • For high altitude, not all consumer grade GPS devices are the same. Most consumer grade GPS devices are designed to solve a 2d location problem on the surface of the earth, rather than a 3d location and then ... dependent on the dynamics of the movement. I have successfully flown various GPS models of the uBlox GPS chipset on high altitude rockets over 60k' and the factory specs are to ~150k. The factory informally confirms that it will in fact report higher but that precision will degrade. The device WILL stop reporting at the ITAR speed limit of 515 m/s but will resume reporting when speed drops below that threshold. If you are below the speed limit, but continue to climb - unclear what the altitude limit really is. We have some flights planned for this summer that will likely test these limits. Intend to fly this modem as part of the avionics science package.

  • How is this board programmed on the Edison? Either in the Arduino environment or in a native Linux environment.

  • I have flown the uBlox chipset above 100k' and at Mach 3. When exceeding 515 m/s in velocity it stops reporting, and immediately begins reporting again when velocity is below 515 m/s.

    The uBlox factory specs these to 50 km altitude but tells me it will continue to report (though at diminished precision) at higher altitudes.

  • I just flew this on a rocket for the first time this past weekend using a uBlox for the GPS.

    The results look surprisingly good - certainly correlating well with the visual behaviour of the airframe as well as the other avionic data - acceleration and baro altitude used for recovery.

  • Yes. I fly them on rockets. Should be good to 50km.

  • An interesting module. Specs say it (along with uBlox devices) should work well for stratospheric balloons. It also has (again like the uBlox) a high dynamic mode, making it useful for rocket projects.

No public wish lists :(