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Comment by Trishant Roy on March 15, 2018 at 7:23am

Hello,

I am looking for recommendations for distance sensor for quadcopters. I want to measure the altitude of the quad. I have used a Lidar Lite v3 and Maxbotix EZ4 sonar before. Looking for other options since Lidar Lite's performance is great but is quite costly.

Thanks in advance.

P.S.: Using Pixhawk as flight controller.

Comment by Clifton Hipsher on June 16, 2017 at 9:35am

If you engage RTL when the aircraft is on the ground the Flight Controller will automatically detect "landing complete" and disarm the motors.

If you can, use a switch to trigger RTL (channel 7 or 8).

Fly the aircraft away from the launch point and put the aircraft in Loiter.  Now you can flip the RTL switch.  

The aircraft sound ascend to 15 meters, hover for a moment and then head towards the launch point, hover over the launch point and then land. Turn RTL off, put the FC in Stabilize and disarm...

Comment by Michael Parrett on June 15, 2017 at 6:59pm

The FS kind of works now but I can't get it to go to RTL when I turn the transmitter off.It will say disarm and shuts off the motors. I have it set to RTL it just won't do it. I even moved it about 10 meters away and it still doesn't work. I have RTL on my three-way switch and that works. I am afraid to try and fly it at this point I don't want to crash it this soon. Any advice?

Comment by Clifton Hipsher on June 13, 2017 at 6:28am

The short answer is the power system (motors/props/battery) is not matched to the weight of the aircraft...

Comment by nicolas olmedo on June 12, 2017 at 5:47pm

Hello good night greeting from uruguay I have a problem that has already been with my head in another time I have a drone in a chassis Q450, afro esc 30 amp, multistar 2212 engines, arducopter plate, with power module but I have engine speed problem Are not enough and the 5 minutes of flight is left without power what can be my problem

Comment by saTxRxasis on June 6, 2017 at 4:42am

30 kgs on quad configuration? You')) need at least 1100 mm quad frame because you'll need @300" kv motors which will spin 32-34" propellers @ 12S LiPo pack.
IMHO, this quad would actually need a lot of cost and by using quad X4 config you'll get no some kind "assurance" because quad X4 don't have redudance power when one or two motor get failure when flying. Better use Hexacopter or Octocopter config. If you still insist using quad config, maybe you should tried quad X8 with coaxial motors.

Comment by iftikhar khan on June 6, 2017 at 4:13am

i need quadcopter degsin and specification that quadcopter lift weigh 3 250g to 30 kgs any one can do that infrom me i will pay him and talk to me in deatil in whatsapp or skype 

Comment by Keith Smith on April 10, 2017 at 3:40pm

Clifton, That makes so much sense. DUH! Everything is good.

Thanks

Keith 

Comment by Clifton Hipsher on April 10, 2017 at 4:50am

@Keith:

The motor order in Motor Test does not match motor number.  

Motor Test starts with the RIGHT FRONT motor and moves clockwise, so for a Hex,  Motor A is Motor 5, Motor B is Motor 1, Motor C is Motor 4 and so on.

Comment by Keith Smith on April 9, 2017 at 8:15pm

Good Day All, I am setting up my first Arducopter it is a hex with hardware V2.8 running 3.2.1 firmware. When I test the motors the the Arducopter outputs don't match the motors.The motor plugged in to output 1 should spin whing I select Test Motor A a in the Mission Planner as I understand it. Instead Moter 5 spins. Am I missing something?

Thanks 

Keith

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