Brian

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Everything posted by Brian

  1. HI Donna, Here is one example. https://m.youtube.com/watch?v=VSeuqJOOKRQ
  2. Yep, motors were replaced and it flies great now.
  3. You can, it looks like there are several on the market. So far, I have not felt he need for a GPS tracker as the on screen display `gives me distance, direction, attitude, as well as a visual from the drone. I have intstalled a DJI 2.4 Data Link and Ground Station. That is not only a GPS tracker but allows for programmed flight. I used it once not taking into consideration the tree between it and the waypoint I asked it to go to. After hitting the tree, 3 motors burned up trying to reach that way point. So, I have been waiting for time, good weather, and wide open space to try out this feature
  4. Here are some photos. Note, the previous photos in this thread was a design I abondonded because it was too unstable. This design works much better.
  5. Hi Lauren, Thank you for asking. The features are hat I can take pictures with this drone. It has a small fixed camera that I use as a first person view (FPV) perspective when I fly it. Then I have a GoPro 4 mounted on a gimble (DJI Zenmuse H4-3D) that I can tilt up and down to capture the best shot. I can switch between the cameras with a switch on my radio. The video is streamed to a monitor (Black Pearl) fixed to the radio by a transmitter on the drone (DJI AVL 58). Then there is an on screen display that superimposes telemetry to the video screen (DJI iOSD Mark II). This tells me lot
  6. Hi Petey63, Here the gain settings I've been using. They work pretty good for me. Hope this helps. Brian
  7. Thank you Av8Chuck and Ed O'Grady for weighing in on this. I appreciate you perspectives on this issue. I am still very new and naive about this and have a lot to learn.
  8. It sounds like it works like a transponder in an airplane. If someone makes a complaint about a UAV authorities can investigate the code from the drone without the pilot knowledge. If you are flying responsibly, no problem. If not, they have your number. I'm okay with that.
  9. Here is another article about this ID system being proposed. Should drones broadcast their IDs to the world? - Engineers Australia https://apple.news/AoLUrJ06IMeG1vXBbELTa-w I like the accountability aspect of flying your UAV.
  10. Anyone heard of this? It sound like a good idea. Drone Maker DJI Offers Operator ID Framework - Insurance Journal https://apple.news/AGv5gQvBNNmCDkvp7D-UNQA it sounds like existing components (at least DJI) may be able to transmit an ID identitifying the drone and it's owner, like a transponder.
  11. Hi Spitfire, Thanks for the information about the cable. Is it better to capture video at the receiver end using this cable to transmit the video? I've just been hitting record before takeoff and recording the whole flight in the camera on the SD card the clipping the best parts out. The card is big enough that I can record a couple of flights before it is full.
  12. Hi Spitfire76, I'm using a Zenmuse H4 3D gimbal. It allows only tilt control. I have to move the drone to pan or do anything else. The Zenmuse Z15 does allow full control of the gimbal but it takes two people to fly it. One to do the flying and one to control the camera and do the filming. I'm solo with this UAV. What I did find is that I can use the wireless features of the GoPro to control the camera (start and end video, snap a photo, ect.). This is limited by the wifi range of the GoPro however. But I can take off, and when ready, turn on the video, fly the UAV to get the footage, and
  13. What I have learned: 1. Don't give up. Ask around because someone else probably has tried it before and knows the answer. Several times I have been stuck and Ryan or Dave at the Anchorage House of Hobbies knew the answer or could figure it out. 2. It is better to look around for a platform that is tried and true as opposed to trying to invent my own. My idea may have its merits but something that is already out there probably is better. For example, trying to make something bigger of the Flamewheel 450 did not work as well as just going to the Tarot 650 which is a platform that has b
  14. Here is the link to some photos. https://www.icloud.com/sharedalbum/#B0Y5VtHQfvWGir
  15. After putting this drone together I just didn't like the way it handled and I didn't like the gimbal being at the bottom-too vulnerable in a crash. Another problem was transporting the drone. I really had no way of packaging it up and traveling with it. So, I scraped the build and put the components on a different frame, the Tarot 650 Sport and I like it a lot. the Tarot frame is about the same weight as the Flamewheel 450 frame with the extended arms. There is more space for components and the arms retract. I also like the built in retract, smaller and lighter than the one I tried to adapt to
  16. Here is another thought. Adding the heavy battery underneath lowered the center of gravity. I did not take this into consideration in programming the location of the flight IMU. I can see how this might contribute to trouble flying as well as the asymmetrical layout. With that said, I am still gong to change the design to be more symetrical (weight centered, camera mounted below he battery) as I think it will result in better flying characteristics. I'm thinking of adding retractable landing gear to give the camera an unobstructed view.
  17. @Brian what's the red thing thats tie wrapped to the landing gear?. I thought it might be a flashing LED to help with orientation. If so I am interesting in installing something similar on mine. Its just a volt meter that monitors total as well as voltage in each cell with an alarm that sounds if any cell gets below 3.5 volts.
  18. Well, I don't like the way it flies. Its too unstable. The camera being so far forward and the heavy battery counter balancing the UAV puts too much work on the flight controller, even an A2 flight controller. This is what I learned. In order to hover without shaking, the pitch gain had to be lowered to 30. Roll and yaw were fine at 60. Those low gains means the UAV does not respond very quickly to commands from the sticks. Now that hover is stable, when I start to fly it, the UAV starts pitching badly. In order to calm it down, I gave it small forward commands, and was able to land safe
  19. Here is the UAV all assembled. Total weight is 3.042 kg (battery alone is 1.2 kg). Camera, gimbal, are counter balanced by the battery. Weight is balanced so as not to put too much strain on the flight controller to keep it level. Here is a photo of the balance jig.
  20. My goal in building this UAV was a quad that would: • fly longer than 40 minutes • take great photos with my GoPro H4 • the ability for programed flight • first person view First flight It flew a maiden flight 4 days ago and without the camera, gimbal or camera positioning rods, fly time was an easy 45 min (lowest cell voltage was 3.9 v, so could have gone more). Motors Max thrust from the tuned E800 motor and 1345 prop is 2100 g/rotor. For a 2:1 thrust to weight ratio, that is 4.2 k. So keeping weight to around 3 k should result in extended fly time. Test flight weig
  21. Here is my pretty good UAV components: ~ DJI A2 flight controller ~ DJI F450 central board ~ Aimdroix V2 aluminum arms ~ DJI E800 motors with 1345 quick release carbon fiber rotors ~ DJI E310 420S 20A ESCs ~ DJI iOSD Mark II ~ DJI 2.4 G Data Link and Ground Station ~ DJI Zenmuse H4-3D gimble ~ Maxamps LiPo 11,000 mAh 6S 22.2v battery pack More to come on what I learned putting this together.
  22. Brian

    Adjusting Gains

    I just learned this from Ryan at the hobby shop. If your UAV is perfectly symmetrical, adjusting pitch, roll and yaw should work fine. However, it is best to adjust each of these independently if your UAV is not perfectly symmetrical. For example, my UAV has a camera mounted in front of the props (it sticks way out there), and it is counter balanced by the battery in the back. So it makes sense that the roll gain will be different than the pitch gain.
  23. Brian

    Adjusting Gains

    I found this website very helpful. http://wiki.dji.com/en/index.php/Gains_Setting I also found no difference setting pitch, roll and yaw individually or in combination, the results were the same. Over all setting went from 150 to 175. I got wobble at 220, went away at 190, but more stable at 175. Clearly a more responsive UAV at the higher settings. Here is my set up: Frame: F450 Weight with battery: 1700 g Motors: DJI E300 ESC: 420 lite
  24. Brian

    Setting up your Radio

    Hi Romulas, I like that term switchology as it explains the process well. I found all these switches, nobs and sliders intimidating at first. Now I'm able to harness their power in making my UAV do what I want it to do-beyond to sticks. I too am a pilot but had to give it up many years ago because of the expense. Flying UAVs sure does scratch that flying itch for me.