DragonOSD+V2 with RTH - Page 911 - RC Groups
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Oct 06, 2011, 06:35 PM
Fly like never crash as always
tascheri's Avatar
thatīs how i set it up. everything works fine, only the elevator trim is waaaay off.

edit: other than that, I am very pleased with the DOSD, stock GPS locks in seconds, text is clear, easy programming, everything I need. very good product guys!!

Quote:
Originally Posted by Vantasstic
Do you have delta mixing on your Tx AND the DOSD settings? When using delta config you want just norma elevator and aileron settings on your Tx (no mixing) and set your DOSD PWM outputs to Elevon1 and 2...let the DOSD do the mixing, not both.
Last edited by tascheri; Oct 07, 2011 at 07:26 AM.
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Oct 06, 2011, 08:05 PM
Registered User
Just got a DOSD, and there are a few issues.

Firstly, the current sensor, it works fine on the OSD, displaying proper voltage and current, however, in PCC is says there is no current sensor attached.

Second, Im using an ArduIMU, and the BBMP085 baro, which both work fine. However, with the baro connected , in PCC , i also get that there is an airspeed sensor connected, and there is not.

Could it be that in the latest revision of PCC, the "checks & X's" are reversed for these two items?

Again, the OSD itself is working properly (I think), its the PCC that seems to be the issue.
Last edited by KKUSA; Oct 06, 2011 at 08:58 PM.
Oct 07, 2011, 07:46 PM
Registered User
Can any other imu be used?

Or where can I fund a adruimu v2?

Thanks, Ken
Oct 07, 2011, 08:45 PM
'FPV'er...not a "LOS'er
Vantasstic's Avatar
Quote:
Originally Posted by k5beason
Can any other imu be used?

Or where can I fund a adruimu v2?

Thanks, Ken
At present there is no other IMU that interfaces with the DOSD other than the ArduIMU which, apparently, is no longer in production. That said, other brand stabilization systems can be used. They would just interface between the DOSD PWM outputs and the servos.
Oct 08, 2011, 09:23 AM
I Like Popcorn
flylite's Avatar
Hi all,

The Postman dropped off our DOSD today, as you can imagine I did a little dance Thanks to the Dragon Labs team for producing such an awsome device which we will be using for a special project we are running, more on that a little later.

We already have a wiring loom made and it took but an hour to modify it so we have the basics up and running.
One snag we have found is that the RSSI and PPM thats fed out from out Rx does not seem to work or is not recognised and I'm just wondering if anyone has tried this Rx before: http://www.frsky-rc.com/ShowProducts.asp?id=80 - We hooked it up, DOSD stated it could see an RSSI signal (using pc commander) but when both the on and off values where configured it was the same value. With the PPM, well nothing seemed to be passed on to the DOSD - no PPM channels seen and no auto detect.

All fun and games but one can't fault the DOSD - its awesome!
Oct 08, 2011, 02:33 PM
Registered User
Firatp's Avatar
Quote:
Originally Posted by flylite
Hi all,

The Postman dropped off our DOSD today, as you can imagine I did a little dance Thanks to the Dragon Labs team for producing such an awsome device which we will be using for a special project we are running, more on that a little later.

We already have a wiring loom made and it took but an hour to modify it so we have the basics up and running.
One snag we have found is that the RSSI and PPM thats fed out from out Rx does not seem to work or is not recognised and I'm just wondering if anyone has tried this Rx before: http://www.frsky-rc.com/ShowProducts.asp?id=80 - We hooked it up, DOSD stated it could see an RSSI signal (using pc commander) but when both the on and off values where configured it was the same value. With the PPM, well nothing seemed to be passed on to the DOSD - no PPM channels seen and no auto detect.

All fun and games but one can't fault the DOSD - its awesome!
I have the same receiver. PPM is working without doubt but to be able to get RSSI, some work is needed.
Cheers
Oct 08, 2011, 04:07 PM
I Like Popcorn
flylite's Avatar
Quote:
Originally Posted by Firatp
I have the same receiver. PPM is working without doubt but to be able to get RSSI, some work is needed.
Cheers
Hi Firatp, good to know - could you show me your pinout to the DOSD with regards the PPM - I'm using top pin signal, middle pin V+ and bottom pin ground.
Not to worried about RSSI but PPM is important but out of interest have you managed to get RSSI working?

Edit: I shelled the Rx and wiped down the terminals and I can now get PPM output
Last edited by flylite; Oct 08, 2011 at 05:01 PM.
Oct 08, 2011, 07:49 PM
Happy Days
mudlark's Avatar
would this be the IMU you can use?

http://diydrones.com/profiles/blogs/...-now-available
Oct 08, 2011, 09:41 PM
'FPV'er...not a "LOS'er
Vantasstic's Avatar
Quote:
Originally Posted by mudlark
No. The ArduIMU you could use is not listed on DIYDrones or Sparkfun sites anymore as it is no longer available. The IMU is not a required item though. I have one on my SkyWalker with DOSD and DL, I rarely turn it on as the GPS AP system does a great job as is. That said, hopefully one of our 'Dragon Engineers' is working a DragonIMU for future availability.
Oct 09, 2011, 03:04 PM
Team Basement-RC
Tracks's Avatar
Part way through a flight yesterday, caught a nasty tail wind. End result, I didn't have enough power to get home. I ended up picking an empty field, got down as low as I could without losing video signal. Made sure I captured the GPS coordinates and then I cut the power and pointed the nose down. (I needed to make sure I went into this field and didn't drift over onto a road or something.) Found the plane. All electronics are good, but the plane snapped in half and broke in a few other places. Nothing some guerilla glue won't fix.

Anyway, I was thinking of what I could have done better. Tell me if this would have made sense. Should I have reset the home position on my DOSD to the current location, set the plane to descent mode, turned on the AP and then killed the throttle?

I believe that would have made the plane slowly circle down to the ground, once I lost visual.
Oct 09, 2011, 04:29 PM
'FPV'er...not a "LOS'er
Vantasstic's Avatar
Quote:
Originally Posted by Tracks
Part way through a flight yesterday, caught a nasty tail wind. End result, I didn't have enough power to get home. I ended up picking an empty field, got down as low as I could without losing video signal. Made sure I captured the GPS coordinates and then I cut the power and pointed the nose down. (I needed to make sure I went into this field and didn't drift over onto a road or something.) Found the plane. All electronics are good, but the plane snapped in half and broke in a few other places. Nothing some guerilla glue won't fix.

Anyway, I was thinking of what I could have done better. Tell me if this would have made sense. Should I have reset the home position on my DOSD to the current location, set the plane to descent mode, turned on the AP and then killed the throttle?

I believe that would have made the plane slowly circle down to the ground, once I lost visual.
Actually that doesn't sound like a bad thing to try. It's all according to how tight your hit distance is. I think it defaults at 200M or so. That's a pretty big area still, but you should be somewhere in that area...probably still with a broken plane.
Oct 09, 2011, 06:30 PM
Registered User
DOSD saved the day. I was out 3 miles and was getting some static so let the auto pilot turn around. What I can't figure out is why my video is worse on the way back? I have an inverted v facing forward.

http://www.vimeo.com/30282069
Oct 09, 2011, 07:37 PM
Registered User
Quote:
Originally Posted by peatmoss
DOSD saved the day. I was out 3 miles and was getting some static so let the auto pilot turn around. What I can't figure out is why my video is worse on the way back? I have an inverted v facing forward.

http://www.vimeo.com/30282069
I don't even mind watching the static, it is a thing of beauty to hit the Autopilot HOME switch and see the plane coming home after the static subsides.
Oct 10, 2011, 04:33 AM
Fly the Discombooberator!
magnetman's Avatar
Quote:
Originally Posted by Vantasstic
I have one on my SkyWalker with DOSD and DL, I rarely turn it on as the GPS AP system does a great job as is. That said, hopefully one of our 'Dragon Engineers' is working a DragonIMU for future availability.
I have found as you say with my TS, but only in calm conditions. I have found the ardIMU essential for blowy conditions, AP alone won't hold it. I have mine on gain channel 7 so I can turn up/down as required, but would ideally like to put it on an on/off switch - you guys any ideas how to set up for that?
Oct 10, 2011, 07:41 AM
Air Crash Expert
sawman's Avatar
Quote:
Originally Posted by peatmoss
DOSD saved the day. I was out 3 miles and was getting some static so let the auto pilot turn around. What I can't figure out is why my video is worse on the way back? I have an inverted v facing forward.
Something on the airframe blocking/shadowing the antenna. (between the antenna and ground station) Could be battery, motor, esc., etc


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