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  • I have just build a quadcopter with an F450 frame, a Pixhawk 2.4.8 and MP. When trying to take off, the quadcopter tilts - the front is lifting much more than the back (and I have not gone any further...). I think I have done all the MP setup steps and calibrations (Accel, compass, radio, ESC) - any suggestions, please?
  • I recently switched laptops and now have Windows 10. I installed Mission Planner on my laptop and plugged a mRo SiK Telemetry Radio into the USB port. The radio is not recognized on the com ports but is instead on the "Other Devices" tab in Device Manager as "FT230X Basic UART", the FTDI chip in the radio. When I go to properties it says no driver is installed.

    I've tried multiple mRo radios and an old 3DR radio, different USB ports, updating Mission Planner, uninstalling Mission Planner and reinstalling, installing QGroundcontrol, and uninstalling the radio in device manager and plugging it back in.

    I've spent some time digging through forums trying to find a way to manually install drivers or to find out if Windows firewall is somehow blocking it with no luck.

    Any advice would be appreciated.
    • I had this issue with the Ground unit of a 3DR 915 MHz Telemetry Radio pair. I am running MP on Windows 10, and Telemetry RSSI was always zero, even though the LEDs seemed to indicate a radio connection was made. I had to study the chips on the ground unit PC board. In my case it was a Silicon Labs Si1000 in the radio half, and Silicon Labs CP2102 USB to UART Bridge on the USB half.

      I tried finding the driver on Windows Update but what they had didn't work. I then found my way to the Silicon Labs web page and downloaded the Windows VCP driver, installed it and voila!

      I was finally able to "connect" to MP from my UAV over the Telemetry Radio!

      Perhaps you can identify the FT239X Basic UART chip (on the PC board) and find out if the manufacturer provides a driver.

      You also mention Windows Firewall was blocking something. Is it the download of the driver? Or the driver itself?
  • I made a drone with /MissionPlanner 1.3.61, navio2 + RP3B+, ardupilot

    I get this message when I do a motor test.

    "Command was denied by autopilot"

    How do I handle this?

    • I'm still very new, but I've been working through the same issue. There are pre-requisites for Arming, in the Flight Controller's firmware. I'd suggest going to Full Parameter Tree in MP and looking at the ARM group of parameters. That may give you some idea of which preflight conditions are expected and which are not being satisfied.

      There is also a Status tab on the lower left side of the Data Screen. It's scrollable right to left, most parameters in alphabetic order, showing their current value.

      I hope this helps.
  • Hi to all!

    I am from Brazil and I am finishing my thesis to get my Doctor's Degree.

    I have an energy model for quadcopters and I need some data to do a final check in the model.

    I have spent the last two weeks tryng to find those files in the Internet.

    I need the binary log or DF log of the Ardupilot such that I can convert it into a .mat file. Then I can use my Matlab program to read the .mat file and d the rest.

    Please, if you have files like that you can make it available to me, please  post here or send to my email : joao.marins@inf.ufpel.edu.br

    As additional info, I need to know:

    - the model of the quadcopter;

    -the weight of the quadcopter;

    - the propellers used for the flight;

    - where the flight took place.

    I photo of the quadcopter would be an extra so that I can put that  in my thesis.

    I will be very grateful if you can help me.

    Best Regards!!

    João L Marins

  • Can anyone direct me to a stable 2,8 250 x quad platform?

  • Apm follow me problem fixed
  • 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.

  • 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...

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Hi,Im working on a autonomous drones and im using JETSON NANO and flight controller PIXHAWK .Im able to control my drone by giving rc commands on the MAVLINK terminal itself by connecting it with PIXHAWK but now i want a python code from which i can do some operations like:takeoff,left ,right,forward,backward…and i am not using GPS…Can anyone please help me…

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HELP quadcopter: one motor twitching and stuttering

Hello guys,I have a problem with one motor, do not spin and making a sound (videos in attachment), I changed the motor to another ESC and is work, so I checked the connections on ESC and all connections looking great. any ideas or something I can do, iam trying to build YMFC32 Brokking .thank youhttps://youtu.be/LagBqwGbixkhttps://youtu.be/PU20nCxApcs

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Will AHRS_ORIENTATION=8 for Arducopter 3.2.1 on APM 2.5 using a traditional Heli

I have been Reading Chris Olsen posts and watching his videos on Arducopter with traditional Helis using a Pixhawk.I have inherited an older Trex 450 heli with the old Align 3G FBL hardware.  The FBL controller appears to be bad.  So I have an old APM 2.5 without a compass or GPS on board.  I just want to replace the failed Align 3G FBL system with the APM.Now I have to mount the APM under the skids on the heli so the APM will be upside down.I have Two questions.1)  Is the AHRS_ORIENTATION=8…

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Maximum number of Lidar for Object Avoidance

Hi all,I'm setting up my PX4-based quad with ST VL53L0X Lidar sensors (I currently have three) and I noticed that line #24 of the current Rangefinder library (here: https://github.com/ArduPilot/ardupilot/blob/master/libraries/AP_RangeFinder/RangeFinder.h#L24) has the maximum number of sensors set to 10 (ten). Am I understanding this correctly? And has anyone ever tried to setup this many rangefinders (or anything close) with any measure of success?Any input/advice will be greatly appreciated.

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