3d Printing Service
Printing 3d Forum
Started by cgcrute, Saturday,August 31, 2013, 11:13:01
Quote from: teslahed on Saturday,August 31, 2013, 11:51:46 You have to use your radio with your flight controller to set return to home failsafes on multiwii. In the multiwii config code you can set the failsafe to make your quad go to auto-level then land (wherever it is) but it will not return to home first.You would have to set things up so that switch high is return to home off, switch low is GPS return to home, auto-level, altitude hold, magnetomer on, and your radio so that when it loses signal it defaults to signal low. I am not sure if this would be possible with your radio setup or not.
Quote from: Hands0n on Saturday,August 31, 2013, 13:14:24 The GPS_Home location is set when you Arm the flight controller. Just remember when powering up to give sufficient time for the GPS to obtain a good 3D lock. Conventional advise is to wait three minutes before Arming and lift off.
Quote from: Hands0n on Saturday,August 31, 2013, 13:23:07 Yes - the C light says you have a GPS lock. If you watch it in the GUI you may be able to see it go to 3D lock a short while after 2D. Also, if you have the newer CN-06v2 board it will successivly GPS lock quicker as it retains the last location before power off in its on-board memory. I went from a CN-06v1 to a CN-06v2 and it locks on quicker and is way more accurate on the v2.
Quote from: Hands0n on Saturday,August 31, 2013, 13:47:16 If you want to have play, and you have the right cables, you should hook the CN-06v2 up to uCentre (download it from here http://www.u-blox.com/en/evaluation-tools-a-software/u-center/u-center.html ). I saw it state that the GPS accuracy got down to 0.8 metres - in the book it is claimed to be accurate to 2.5m, probably a conservative figure for marketing purposes.
Quote from: cgcrute on Saturday,August 31, 2013, 19:00:40 Thanks, I';ll have a look although I';m guessing it will involve another lead?
Quote from: Hands0n on Saturday,August 31, 2013, 19:43:04 Err, yeah, probably, and a TTL to USB adapter too (always worth having for a few quid spend). But yeah, it will.
Quote from: Hands0n on Saturday,August 31, 2013, 20:35:02 Typically you need uCentre, cable and TTL/USB kit to reconfigure the uBlox GPS for speed and GPS strings sent to the flight controller where it is an APM or Megapirate-NG firmware. Out of the box the GPS runs at 9600bps (the FC needs 38400bps) and a full set of GPS strings. The tool and cable are often useful for other purposes also where you need USB to Serial which a lot of FC accessories use.
Quote from: orfordness on Sunday,September 01, 2013, 14:35:29 My ublox from rctimer has worked straight from the pack, I';ve not adjusted anything and i';m getting 0.8m accuracy...working on a "is not broke don';t fix it " policy!Steve
Quote from: cgcrute on Saturday,August 31, 2013, 21:07:56 That';s odd, mine works fine out of the box.
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