DragonOSD+V2 with RTH - Page 654 - RC Groups
Thread Tools
Mar 05, 2011, 01:09 PM
FPV flyer
Virgis21's Avatar
Originally Posted by rc-mike
Does anyone know where I can get a barometric pressure sensor that will work with the DOSD? This one at DIYDrones that is supposed to work is out of stock. http://store.diydrones.com/product_p...1000d11-01.htm
Originally Posted by cherokee180c
I use this one. It is not supposed to be as good as the DIY one, but it works tons better than not having one. It is pretty stable and if the weather dosn't change I normally land within 5' of taking off.

Yes, this works too. I have both from DIY and from sparkfun.
BMP is cheaper by half.
SCP1000 has some drift if temperature changes. after turning on +10 and fly in -10, will have around 20m lower than take off
Didn't check BMP for that option. By the way BMP is more "jumpy" than SCP..

Sign up now
to remove ads between posts
Mar 05, 2011, 01:14 PM
O <- this a ground loop
Guys - I'm giving away $5 worth of points but you have to find the easter egg.


Mar 05, 2011, 01:48 PM
Stay airborne my friends
rc-mike's Avatar
Thanks, I will probably just go with the sparkfun one then. I'm not too worried about it being a little bit off but while using the GPS I am getting a few hundred feet off sometimes.
Mar 05, 2011, 02:30 PM
O <- this a ground loop
Sorry to post this to the group but I had an order from KrisW for a DOSD about a week ago.
He's dissapeared off the radar and hasn't been on RCG for a while - no reply to PM or email.

I'm gonna have to let his DOSD go as I only have 2 left.

Kind of more worried that KrisW is ok and not in any kind of trouble.
If anyone is in contact with him please PM me and let me know.


Mar 05, 2011, 05:23 PM
So Cal FPV Aviator
EyeFlyPlanes's Avatar
Hey guys,

How do you hook up rssi to dragon link?
Mar 05, 2011, 07:22 PM
Just clumsy. Oh, forgetful too
MikeTheCrash's Avatar
Originally Posted by EyeFlyPlanes
Hey guys,

How do you hook up rssi to dragon link?
outer pin on DL connects to RSSI conn on DOSD, you need to be in G.P. mode 2 in the menu which is RSSI not analogue voltage, then it will display as RSSI.
Last edited by MikeTheCrash; Mar 05, 2011 at 08:09 PM.
Mar 06, 2011, 05:30 AM
Registered User
I have problems to activate my autopilot. So maybe it will be better for me to buy a USB to TTL converter, and use my computer.
Can I use this:
Mar 06, 2011, 07:09 AM
Registered User
Hi Voguna,

Yes, that looks about right and should work.

Mar 06, 2011, 12:24 PM
Registered User

Regarding the RSSI connection, take a look at the following link (first post):-


Mar 06, 2011, 03:54 PM
JBeauford's Avatar

RSSI Calibration

Speaking of RSSI...

I now have my DLink receiver installed and the RSSI cable is connected. GP mode is set to 2 and I am trying to calibrate the RSSI. As instructed by the manual, I start by turning off the transmitter and set the RSSI low value to where it begins to show 0%. In my case, that's about 0.795V if I start adjusting RSSI Low Value upward from 0.500V. Then I turn the transmitter on and adjust the RSSI High Value to where the display begins to show 100%. In my case, that turns out to be 0.795 (same as RSSI Low Value) if I start adjusting downward from 2.230V. That can't be right can it?
Mar 06, 2011, 04:19 PM
Praying for better weather
Coyote64's Avatar
My RSSI wont work either with DL, But i think theres a break in the cable, sometimes im getting a high of +3v sometimes 2.xx others 0.8v, but wether tx is on or off they stay the same which is strange.
Mar 06, 2011, 07:48 PM

DX7 working now! Thanks!

Originally Posted by mark hitchman
If you are using the serial connection, can I suggest you use PC Commander, it makes everything so much easier. The pwm not working will probably be a setting but get your menu working and change osd mode to 3 and you will see the servo pwm outputs.

I started using a DX7 with ppm encoder and the ar7000 receiver so it does work. Now use the Dragon link for more range but the DX7 was very successful. Try scrolling the endpoints for the 3 way switch while watching the screen, it's been a few months since I did this so can't really tell you anything useful, maybe search this thread for DX7 might come up with something.

Thanks for the reply, Mark! I looked through your earlier comments on this thread, and found that the order of the control modes isn't as reported in the manual... I fiddled around with the trim on my flap channel and eventually found the menu. Then I adjusted the travel+trim on the three settings to give myself OSD, OSD+autopilot, and menu. Works great now!
Mar 06, 2011, 07:58 PM
Registered User

That doesn't sound right. My guess is that you probably have a connection problem or something. If you have a meter, you can always measure the voltage out of the RSSI pins from the DL to see if you are getting the proper voltage variations. Do make sure that there is a common ground and the correct RSSI pin is being used, both on the DL and the DOSD+.

Mar 06, 2011, 10:27 PM
Registered User
Hello Daniel, I noticed something with the correct flight setting vs the simulator settings. I have the autopilot setup correctly for real flying, when I run the simulator I have to reverse the aileron direction to get it to work. I forgot to set it back for regular flight and had the plane almost spiral out of control when autopilot was engaged. Is this something that could be fixed in the next update to the DOSD+V2? I really like to use the simulator when I can't get out to fly.

Mar 07, 2011, 06:54 AM
shonky1's Avatar
Daniel, Do you do repairs on your DOSD+ or are they throw aways? The reason I ask is I plugged the current sensor while attached to a battery into one of the servo ports, as you can imagine it went burnies and now doesnt work and the other I have wont read Mah used or current draw or battery voltage. If you do do repairs, can you PM or post the address to send it to please. If not, it doesnt matter and will teach me to concentrate when hooking it up.

On further inspection fried the IMU, barametric sensor, GPS, 12c junction as well, VERY expensive mistake!!
Last edited by shonky1; Mar 07, 2011 at 07:39 AM.

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Dragon OSD Level Flight FPV Talk 22 Dec 31, 2013 09:08 PM
For Sale New Intelligent Flight Dragon OSD bfischer Aircraft - General - Miscellaneous (FS/W) 7 Jul 19, 2010 12:56 PM
Discussion FS Ready to fly Intelligent Flight Dragon OSD bfischer FPV Talk 0 Mar 03, 2010 06:57 AM
Discussion RV OSD or Dragon OSD djdaveq FPV Talk 1 Feb 06, 2009 01:18 AM
Discussion RV OSD and Dragon OSD - so near to being Really good! magnetman FPV Talk 8 Nov 11, 2008 06:13 AM