Member #151132

Member Since: September 14, 2010

Country: United States

  • Product SEN-10530 | about 3 months ago

    433011, did you get this working? I’m interested in doing the same thing in my Bixler, where I have my APM 2.5 mounted too near some power wiring.

  • Product GPS-08785 | about 3 months ago

    The link above for the Expansion Board, http://store.diydrones.com/ProductDetails.asp?ProductCode=KT-0001-01 , doesn’t work.

    Ditto on the link for the X, Y, and Z sensors, http://store.diydrones.com/ProductDetails.asp?ProductCode=SE-0002-01 .

  • Product SEN-11744 | last year

    I’m having a bit of trouble reconciling the “bandwidth” (frequency response?) spec on this thing with the chart in the data sheet, which seems to show a pretty flat response from around 50 Hz through 1 kHz. I can see why you’d need a pretty good LPF between this thing and an A/D converter with a 500 Hz sampling rate.

  • News - Sending a Balloon Into Ne… | about 3 years ago

    Figured it was either a bug in the firmware or a bug in the datasheet :-) The problem with testing the firmware is you either need a GPS satellite simulator or a vehicle that can take you to altitude. The latter will be cheaper until the National Helium Reserve runs out of gas (thanks to Congress directing it be privatized).

  • News - Sending a Balloon Into Ne… | about 3 years ago

    It’s my understanding that many civilian GPS receivers have an altitude limit of 60,000 ft, ~18 km. 60,000 ft is the upper limit of FAA-controlled airspace, so I guess somebody decided that civilian GPS receivers shouldn’t have to work above that altitude. Why anyone who could build a missile that would fly above 60,000 ft would not be able to figure out how to navigate it up there is beyond my ability to feel paranoid.
    Edit: Here’s a GPS module from uBlox, a Swiss company, with an altitude limit of 50 km and a speed limit of 500 m/s (only works for those really slow ballistic missiles :-). It’s their LEA-6 series of GPS modules:
    http://www.u-blox.com/images/downloads/Product_Docs/LEA-6_DataSheet%28GPS.G6-HW-09004%29.pdf . I’d like to see a BOB for these.
    The SUP500F or the Venus 634FLPx Sparkfun sells
    might_ work–specs say altitude < 18,000m OR speed < 515 m/s. Hate to spend several hundred bucks building and launching a balloon to find out.

No public wish lists :(