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ArduCopter User Group

Discussion group for ArduCopter users

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pixhawk signal logic voltage?

Started by Hugues. Last reply by Artem Bulashev 21 hours ago. 4 Replies

Hi,What is the signal's logic voltage level on pixhawk I2C and GPS port? 3.3V or 5V?I do not have an oscilloscope so if someone had the answer, it would spare me to buy this equipment :)ThxHuguesContinue

CAN NOT INVOKE AUTOTUNE FLIGHT MODE

Started by Marco C. Last reply by Marco C Nov 30. 15 Replies

Hello everybody,I'm trying to fly my exa in autotune flight mode, unfortunately during my indoor test I can't invoke it.As you can see in the attached imagery once I switch on flight mode 3 pixhawk…Continue

Apm 2.6 Impossible stabilization, what do you think about this problem?

Started by Freddy Alcarazo. Last reply by Freddy Alcarazo Nov 27. 9 Replies

Hello dears from diydrones.This quadcopter that I mounted using apm with AC 3.1.5 and the frame x alien..I did  a cheap power distribution board for give supply energy to four motors, but I don't…Continue

Tags: motors, apm

back up power

Started by Marco C Nov 27. 0 Replies

Hello everybody,I was wondering if it is possible to configure servo rail for back up power, I have read this sentence on this wiki …Continue

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Comment by Charles lakins on January 3, 2014 at 10:20am

I wouldn't say altitude is your problem until it comes to the camera resolution and filtering capabilities any craft given the amount of flight time required will perform the needed altitude and allow you the decent time to land too

 

to achieve the filtering required are there limits to distance to be effective ?

my concern is the farther away the less likely to get results usefull

Comment by Alan Jump on January 3, 2014 at 10:16am

@Essam Your operating altitude is going to depend on the field of view of your selected lens. If you need the camera to capture a single image to cover 120 acres, and your lens has a 38 degree viewing angle, my maths say you'll need to fly at around 2200 feet AGL. A wider-angle lens will reduce that altitude, but may distort the image.

Comment by Essam on January 3, 2014 at 10:02am

Hi everyone; Happy new year. I am new to this field but I am interested in building my own uav using this site support. The reason I need a UAV is for my agricultural research. I need to be able to capture a 120-acre field in one single shot/photo using a near infrared capable camera. I need near infrared because it helps identifying stressed vegetation (I would need both the red and near infrared reading to do this). I am concerned that I may need to fly too high to be able to see a 120 acre field in one shot; in this case what uav design/model would allow me to accomplish this task? I am thinking of buying a small camera and modify it so that it can capture both the red and near infrared area of the spectrum. I am on a small budget so not looking to spend thousands; especially on my first uav.. Many thanks

Comment by ShadowAir Ltd. on December 24, 2013 at 5:47pm

Removed as advertising.

Comment by Sean Headrick on December 24, 2013 at 12:40pm

I am a bit perplexed. I was helping to diagnose a problem on a friend's copter (quad) and found I could get nowhere without connecting to the APM through MP. I feel like I have a lot of experience with the APM but have not seen this. The yellow LED blinks as normal, but I get neither of the red or blue indicator leds. when I try to connect to MP i get a "No Heartbeats received" error message. I tried to connect through the CLI with no success. Would the yellow LED flash if the fuse was blown. Any suggestions are much appreciated.

 

Comment by Bob Kirkpatrick on December 23, 2013 at 12:27am

@Gunnar Baardsen  you have the right gimbal, that is the one I was talking about. I use mine with a Naza controller and the servos plug directly into the X channels and doesn't need an auxiliary gyro/IMU. he APM also permits this using any free channels for up to 3 axis control.(see http://copter.ardupilot.com/wiki/camera-mount/

If you decide on the Alware, I suggest that you replace the all plastic servos with ones with metal gears and ball bearing shaft. I am noting some lash from wear appearing. Lately I have been flying a Nikon Coolpix LX810 and I think its weight is wearing out the inexpensive servos that came with the Swing.

Comment by Gunnar Baardsen on December 22, 2013 at 9:19pm

@BobKirkpatrick

Is it this 2-axis gimbal you are referring to - http://www.alwarerc.com/shop/swing-2axis-camera-mount-p-67.html

I read from the specs that they recommend the use of a gyro stabilization. I was under the impression that such a stabilizing feature is built-in with the APM 2.5, hence it's not needed with any additional hardware to control this gimbal.

Or am I wrong here?? I have a 3DRobotics quad (under rebuilding to a hexa these days) that I want to equip with this gimbal with a Canon S100 PowerShot camera.


3D Robotics
Comment by Chris Anderson on December 11, 2013 at 2:08pm

Lovely scenery! Now time for a stabilized gimbal;-) Embedding your video so others can enjoy:

Comment by Rob Avery on December 11, 2013 at 1:56pm

Using my APM 2.5 on a TBS Discovery w/ frsky 2.4 control, Immersion RC 600mw 5.8 and Fatshark Dominators, its taken a few months to get the bugs ironed out and flying (many crashes and about 3 vtx's), but it now flies nicely (though I'm a crappy pilot) thanks to this user group and many other fellow hobbyist. I am getting just over a klm of range with both video and control. Missions work great and loiter is finally stable.. see my quick video in Hawaii (apologies for the jello I have my gopro hardmounted in waterproof case for obvious reasons :)  http://youtu.be/tdV1w0lNKU0 any questions feel free to ask, and again thanks to everyone who helped me :)

Comment by Tom Gates on December 11, 2013 at 1:51pm

Ok, I emailed 3d robotics, they tell me approximately 1 mile, line of site, with FlySky transmitter.

Thanks John

 
 
 

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