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ArduCopter User Group

Discussion group for ArduCopter users

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Pixhawk 2.1 with Futuba SG14 - Unpredictable Mystery!

Started by Escobar. Last reply by Clifton Hipsher 4 minutes ago. 1 Reply

Okay here is what happened!1. We power up all the devices.2. Switch ON radio Tx3. Arm the Safety Switch.4. Slowly increase the ThrottleAll fine now...Suddenly, the Quad goes full power, blasting all…Continue

Mission Planner Georeference errors

Started by Jack. Last reply by Jack Nov 9. 1 Reply

Can one of the Dev's of Mission Planner please have a look at this error.After the 1.3.50.1 release of Mission Planner, I can't Georeference my photos anymore.I've followed the workflow a couple of…Continue

RTL mode activates automatically at a height of 150 to 200 ft

Started by Pradeep Kumar. Last reply by Pradeep Kumar Sep 16. 8 Replies

Hi,I am using a APM 2.6 FC for my S500 quadcopter. It is also fitted with telemetry to show flight parameters at gcs. I am frequently having a problem of auto initiation of RTL mode at a flight level…Continue

mini APM 3.1 JR DSX9 AR6100e Problem

Started by Jaroslaw Kwiatkowski. Last reply by Jaroslaw Kwiatkowski Aug 29. 4 Replies

Hello,I have big problem with running that I have connected receiver to APM, on MP i can calibrate and all worksBut i don't have any reaction on output, servo don't work thro don't work :-(I'm in…Continue

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Comment by Rui Manuel Cravo Marques on February 24, 2012 at 4:38am

Gjango, I don't know if you're familiar with this site : http://www.ecalc.ch/ 

The thrust depends on several factors : motor power, motor kv, propeller used. A 100w motor with 800kv and a 13" propeller will give you less thrust than a 300w motor with 800kv and a 13" prop, since the last one will be able to maitain higher rpms with such a "eavy" prop, but the motor will also be heavier. Pay attention, sometimes motors have in their specs the thrust, but it's not lifting thrust but horizontal thrust (for planes)

Comment by Gjango on February 24, 2012 at 4:28am

hi to all

How can I calculate the thrust produced per motor in kg?

Comment by Ellison Chan on February 18, 2012 at 10:36pm

Well, 850kv @ 20amp would probably generate over 1kg thrust per motor.  So your flying weight with the gopro is over 4 kg?  That does seem like a heavy drone.  If you're really over 4kg, you should probably be looking at a hexa or octo.  Since if you try to find motors for a quad that can lift greater than 4kg, you're talking about expensive motors and escs.

Comment by Adli Shahnaz on February 18, 2012 at 10:06pm

Elison, 850kv with 20amp ESC. I just transferred from the normal jdrones ardu frame to the X1 frame. Should I change the motors and the ESC?

Comment by Ellison Chan on February 18, 2012 at 10:02pm

Adli, what kv motors come with that frame?  12x45 sounds like they're big for a 20amp rated motor..  Adding another battery in parallel will likely make the lifting ability worse, since there will be the extra weight of the battery added to what you say is an already heavy drone.

Comment by Adli Shahnaz on February 18, 2012 at 9:46pm

Hi guys,

Can I add an extra battery to the arducopter?What do I need to do in order to do that? Help please. Right now, I am using the JDrones X1 frame with 20amp of motor and 12 x 45 props. It seems  a little bit heavy to lift with gopro attached to it. Thanks.

Comment by Sayan Andriyanov on February 4, 2012 at 12:11pm

Adli, is your camera fixed or it dangles?

Comment by Gage Halverson on January 29, 2012 at 5:55pm

I have the official 900Mhz telemetry kit soldered it myself I've tried using x-ctu and unbricking and reloading the firmware 

i called diydrones store and the lady didn't know what to do 

i found this posts and i kinda tried it (not soldering the wire on but just holding it therehttp://diydrones.com/forum/topics/xbee-900-kit-lights-but-no-telemetry?xg_source=activity&id=705844%3ATopic%3A645885&page=2#comments

and http://diydrones.com/forum/topics/xbee-pros-unable-to-talk-w?commen...


3D Robotics
Comment by Chris Anderson on January 29, 2012 at 4:06pm

Gage: You'll have to post info on your whole setup. If you're not using the official 900Mhz telemetry kit, I won't be able to help you. (I've never used anything else)

Comment by Gage Halverson on January 29, 2012 at 3:19pm

Hey i really need help with the telemetry i can get it to connect

 
 
 

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