Spitfire76

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Everything posted by Spitfire76

  1. It looks like if you use one of their Evo series sensors then power is obtained from the Pixhawk. https://www.terabee.com/connection-to-pixhawk-autopilots-teraranger-evo/ What you may need though is an I2C hub as your compass maybe already be using the I2C port but I would need to check into that further.
  2. https://www.terabee.com If the sensor is pointing down it can be used as an accurate way of measuring the distance the aircraft is off the ground. Yes, if mounted horizontally and configured appropriately although several sensors would be need for all round collision detection. https://www.terabee.com/shop/lidar-tof-multi-directional-arrays/teraranger-tower-evo/ No a big deal, in that case you just add a BEC that supports a 6S input voltage and provides a 3s output. Again, I have not used any of their products so I can't say if they work well or not although as I mentioned before I am considering using one of their products for use in a fixed wing UAV. Also I may look into their EVO sensors rather than their first generation Terra Ranger One. https://www.terabee.com/sensors-modules/lidar-tof-range-finders/
  3. I've never had to mess the those values so I can't say why its not working. In my experience of building several drones using ArduCopter the default values have worked fine although I do plan on using the "Autotune" flight mode one of these days. I believe that it just changes the PIDs though for roll, pitch and yaw and not throttle. Have you had experience with other drones ?. I ask because when I first started flying my landings were not exactly soft and it took some practice to land well.
  4. Looks like some of these changes are just now kicking in...... https://www.suasnews.com/2019/05/faa-highlights-changes-for-recreational-drones
  5. Spitfire76

    Throttle P value

    Did perform radio and ESC calibration ?. http://ardupilot.org/copter/docs/common-radio-control-calibration.html http://ardupilot.org/copter/docs/esc-calibration.html Have you changed any of the PID settings ?. Does it also land hard when you switch to RTL ?
  6. Spitfire76

    Throttle P value

    What flight mode are you in when landing ?
  7. Version 1 of the competition rules for the UAV Challenge Medical Rescue 2020 have been posted. https://uavchallenge.org/medical-rescue/
  8. I thought that Bob Watt's podcast on hydrogen fuel cells for use in drones interesting. His company, WattsInovations has been testing a fuel cell from Intelligent Energy http://highvoltagepodcast.com/12-reasons-why-a-hydrogen-fuel-cell-powered-drone-might-just-work/
  9. DJI released a new product earlier today. No event just an update to their website. https://store.dji.com/product/osmo-action
  10. It is but I would not rely on the barometer that's in the flight controller. You need a more accurate range finder at low altitudes. http://ardupilot.org/copter/docs/common-rangefinder-landingpage.html I've used an ultrasonic one as it was the most economical http://ardupilot.org/copter/docs/common-rangefinder-maxbotix-analog.html but if I were to add one these days I would try out one of these http://ardupilot.org/copter/docs/common-teraranger-one-rangefinder.html I'm currently building a fixed wing drone and a rangefinder is essential for antonymous landing so will likely use one of those although they are that cheap.
  11. I tried this on the ArduCopter SITL and although it does warn you that the value is out of range it does give you the option to continue and change it. So yes you can set it to 2 m but again the GPS is not so accurate so having such a low radius may cause problems.
  12. It looks like the FENCE_RADIUS parameter range is 30 to 10000m so I suspect you will get an error if you try to set it lower. Typically the GPS is only accurate within a few meters, same with the altitude unless you are using a lidar range finder instead of the onboard barometer. I believe that GPS RTK is more accurate (down to a few cm) but I have no experience with its as it out of my budget.
  13. You can use mission planner to configure a GeoFence. http://ardupilot.org/copter/docs/ac2_simple_geofence.html P.S I've noticed that your posts are appearing in the pilot lounge catergory but the DIY would be more appropriate.
  14. 50% throttle is roughly when the throttle is in the center. More information here http://ardupilot.org/copter/docs/ac_throttlemid.html#automatic-learning-of-hover-throttle You can select which compass to use on the compass calibration screen in MP. http://ardupilot.org/copter/docs/common-compass-calibration-in-mission-planner.html
  15. The throttle should be around 50% to hover when in stabilize mode. There is a "dead zone" in loiter mode which I believe is between 40 - 60 % throttle in which the drone will maintain altitude. Moving the throttle outside this range will increase or decrease the altitude. If you haven't moved the throttle back to the hover position of around 50% then when you change from loiter to stabilize it will use that new throttle setting and suddenly increase or decrease in altitude.
  16. The range of that camera looks pretty small, I think its more suitable for short distance thermal measurements than longer distances that would be needed for use on a drone. The thermal cameras used on drones seem to be in the several thousand dollar price range. A couple of camera companies that I've been following for potential use on my DIY drones are https://www.mapir.camera https://openmv.io
  17. What flight modes did you test ?. Was this the maiden flight ?. I typically test stabilize mode first as this only uses the gyro and accelerometer. If that works ok I switch to loiter which tests the GPS and compass. I also might test alt hold mode as this uses the barometer to maintain altitude. Finally if those work I'll test RTL. Its really important that some of the sensors are thoroughly calibrated before flying. Did it fly better in siome modes than others ?. Make sure that the only compass that is being used is the external one in the GPS. Also make sure that it is properly calibrated..
  18. UAV camera gimbals usually have some sort of interface for controlling pitch and pan via the same radio that is used for controlling the UAV. For example the camera gimbal that I used on mine awhile ago was the Tarot T4-3D which has both PWM and S.BUS interfaces and so connects to the same receiver that is used to interface to the flight controller. I just assigned a couple of slider controls on my transmitter to control pitch and pan. If I was planning to build a more professional UAV then I would consider Gremsy . Also in some high end UAVs you might want to have a 2 operator configuration, one flying the UAV and one operating the gimbal and camera in which case you would install 2 receivers.
  19. Thanks @Chase Flynn | UAV Coach for the information on flying in and around Sacramento as I live not too far from Sacramento and Folsom. These days I mainly fly at our local AMA club which is similar to the one in Davis that you had on your list of 5. One thing to point out when flying at an AMA site is you need to be both a member of the club and also the AMA https://www.modelaircraft.org Clubs usually have a guest policy but you still need to be an AMA member and permission to fly at their field. Our city of Roseville allows flying in designated areas of some of its parks but does require the purchase of an annual permit and of course park rules as well as FAA rules must be followed. https://www.roseville.ca.us/cms/one.aspx?portalId=7964922&pageId=13499979 I haven't flown in Folsom state park but understand that it is allowed. The main reason is its $12 each time you enter the park although of course annual passes are available.
  20. Interesting I would have though that until the EKF shows white it would not have allowed you to arm i.e part of the pre-flight checks. Sometimes the GPS can't get a fix from a sufficient number of satellites when indoors but that should also have also stopped you from arming unless you have the arming checks disabled. http://ardupilot.org/copter/docs/prearm_safety_check.html#prearm-safety-check Maybe EKF is not part of those checks. I'll have to look into that further. Anyway glad that its working now.
  21. With the throttle above minimum is it still automatically disarming or does it stay armed ? After changing the LOG_BITMASK to 0 did you save the parameters and reboot the flight controller by removing and reconnecting the battery ?
  22. Most new technologies go through the hype cycle. https://en.wikipedia.org/wiki/Hype_cycle Which phase do you think the UAV industry is in right now ? Obviously we are not in Technology Trigger. Personally I believe we are on the low end of the Slope of Enlightenment.
  23. Are you using the internal compass of the HKPilot32 or an external one located in a GPS?. As the compass is susceptible to electrically interference Its better to use an external compass mounted well away from the power distribution and motors. Usually the compass/GPS combo is mounted on a stand. You can disable the internal compass in MP and just calibrate the external
  24. I really don't know much about this company except what they post on their website but they do have a location in Napal. https://flyinglabs.org/nepal/ They are associated with https://werobotics.org
  25. One thing to be aware of is that if you arm but leave the throttle at zero for 15 seconds Arducopter will automatically disarm. To me it still sounds like the Telemetry connection is having issues when armed. One thing to try is to go to RC Calibration and check to see if the PWM values are changing when you toggle the flight mode switch/s. Compare them when disarmed and armed. You could also try disabling logging again by setting parameter LOG_BITMASK to 0.