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Everything posted by Spitfire76

  1. Spitfire76


    Interesting design of a large payload quad from FreeFly https://freeflysystems.com/alta-x Typically these high end systems have 6 or more motor/props, not just for lift but for redundancy so why only 4 ?.
  2. Hello @Tom-22 and welcome to the forum. I have a build using the S550 frame, its a good frame but I would prefer to mount the batterie/s on top of the frame rather than underneath but there is not enough space between the center plates to install a flight controller the size of the 2.4.8 Pixhawk. I am currently experimenting with using a small flight controller on another build that I have using a S500 quad frame. I am using this controller http://www.holybro.com/product/kakute-f7/ Its really meant for a small racing quad but ArduCopter software can now run on these types of boards. http://ardupilot.org/copter/docs/common-autopilots.html Since it fits between the center plates of the frame I can install the gimbal/camera in the center underneath the quad and the battery on top. I am also looking into using 2 batteries as I found the flight time using one 3s 5200 mAh battery quite limiting. As you will see from this thread I've been messing around with these frame for a few years. I just like to tinker
  3. I can see why Zipline is number 1 as they have been providing medical delivery service by drone for several years. Altough they are a US company their delivery service is primarily been provided in Rwanda. I recently came across this video that shows some interesting engineering design choices that they made.
  4. Have you only tried one ESC ?. If not try another as you may simply have a bad ESC.
  5. News regarding the aeronautical knowledge test for recreational drone pilots https://www.faa.gov/news/updates/?newsId=94325
  6. Interesting PBS Newshour report on the worlds declining bee population, its affect on food production and the technologies that may help including the use of drones. https://www.pbs.org/newshour/show/as-bee-populations-decline-can-technology-help-fill-the-gap The drone company that was mentioned https://www.dropcopter.com
  7. I believe that Bobby did say that the video breakup could have been due to the proximity of the electrical power lines.
  8. Version 2 of the rules published and team registration form is now available. https://uavchallenge.org/medical-rescue/
  9. If this drone is PNP (plug and play) it will not come with a receiver and transmitter/controller. If its a BNF (Bind and fly) then it comes with a receiver but not the transmitter/controller. Which one do you have as it will determine what radio you need ?. Also if its BNF what model receiver does it have ?. Personally I prefer FrSky radio products that run OpenTX software and I've noticed that a lot of FPV racers use their controllers. You will also need to add goggles or a monitor to view the video but you could do without one of those to get started.
  10. Looks like they are available to order for $819 or $929 https://store.dji.com/product/dji-digital-fpv-system
  11. Looks like the "HereLink" does have some sort of encryption although no real details https://discuss.cubepilot.org/t/support-for-encryption/1370
  12. I got introduced to drones back in 2013/14 after backing this kickstarter. I opted to purchase the DIY kit and a few months later received a box of cheap parts without instructions and little support from the creator but eventually after a lot of googling and help from some other backers I did get it to fly although not quite as well as in the video. The positive outcome from it was I was hooked and since then have built several drones. With the help from DPGS I obtained my Part 107 back in September of 2016 and although I have yet to build a drone business I am an avid follower of the commercial UAV industry with a particular interest in the enabling technologies. For this reason it would be great for me to attend InterDrone for the first time. Cheers Richard
  13. I now understand why you didn't provide this as your quad uses DShot ESCs and those fields don't show up. Instead the field "motor idle throttle value" appears.
  14. It looks like ArduCopter has introduced some limited object avoidance code but I have not used it. http://ardupilot.org/dev/docs/code-overview-object-avoidance.html Of course you would need more sensors if you wanted all round detection. For example I see that TeraBee make a multi-directional array using their Evo sensors. https://www.terabee.com/shop/lidar-tof-multi-directional-arrays/teraranger-tower-evo/
  15. If the Pixhawk is being powered by the power module I don't see any reason to have a capacitor. Now the Pixhawk can also be powered by the servo rail which could be used as backup power if the power module voltage drops too low. Mainly though the recommendation is to add a zener diode to this rail to limit the voltage although I've seen some also recommend a capacitor but according to the Ardupilot wiki the diode is all that's needed. http://ardupilot.org/copter/docs/common-powering-the-pixhawk.html
  16. Its normal for the motors not to spin-up after arming and increasing the throttle when the drone is connected to the BetaFlight Configurator. Its a safety precaution but you can spin them up with the motor test providing you enable the "I understand the risk....". In BF Configurator select "receiver" from the left menu and check the min and max values by moving the throttle. For example on my quad (not the same as yours) the minim throttle value is 988 and the max is 2012. Also in the "configuration" under ESC/Motor Features what is the minimum throttle value ?. On my quad its set to 1000. This is the value the throttle needs to be at for the motors to spin. When you power up are you getting video on your monitor or goggles as it could be the video transmitter getting hot Is the Permanently enable Airmode off in the configuration menu ?
  17. I am beta testing the new FAA's B4FLY mobile app and assuming I have the correct location of the park here is a screen shot from my iPhone. I would check again by calling the state park administration and don't go by just one park employee's word.
  18. @Dawson Fernandes @Av8Chuck I don't know how this compares with the "HereLink" but they look very similar. The HereLink also has an integrated Android tablet and runs QGroundControl. Its available from various distributors including these guys. https://www.getfpv.com/herelink-2-4ghz-long-range-hd-video-transmission-system.html It was designed by the same folks that developed the Pixhawk 2.1 "Cube" which is now called the "CubePilot" Bobby Watts, the founder of Watts Innovations recently tested this controller.
  19. Looks like the US Department of the Interior has validated this DJI solution https://unmanned-aerial.com/interior-department-approves-dji-government-edition
  20. Yes, you need to have an external BEC or ESC with a built in BEC in one of the output ports to provide enough power for the servos. If I recall you can do this but since you are simply passing the signal from the receiver to the AUX output you may as well just connect the receiver directly to the servo. For example in the case of retractable landing gear I wanted to have the flight controller deploy it when performing a RTH but at the same time I wanted to have a switch on my Taranis also be able to deploy it manually.
  21. This is a good place to start http://ardupilot.org/copter/docs/common-servo.html So firstly there are 6 aux outputs that output 2 types of signaling, either "servo" or relay. Servo would be used when the device that you want to control uses PWM input and relay when it requires just 0/3.3 volt input. You can change this combination of servo/relay allocation of those 6 outputs with the parameter BRD_PWM_COUNT. Also consider these parms SERVOx_FUNCTION where x is 9 to 14 for AUX 1 to 6 respectively. This parameter will determine what function is performed. CHx_OPT where x is the channel number from the receiver. This will determine what function is performed when the PWM is above 1800. I recall for my retractable landing gear that was connected to the first aux port I set these as follows. SERVO9_FUNCTION 29 CH9_OPT 29 (Channel 9 on the radio is mapped to a switch)
  22. I know that the its possible as I had configured retractable landing gear on a HexCopter. Initially I just had the landing gear control connected directly to a channel on the X8R receiver and so manually controlled by a switch on the X9D but later connected it to the first AUX port of the Pixhawk so that the landing gear would automatically deploy on a RTH. I'll check my notes on how I did that.
  23. Looks like these guys have done a great job of using drones in eduction in Russia. Warning the video is long but if you are interested in using drones in education worth the time to watch. P.S I pulled this out of another thread that I created in the DIY category.
  24. After watching all the sessions this has to be my favorite. Its a Russian company that focuses on using drones in education and it looks like that they have done a fantastic job. Warning this video is very long but if you are interested in using drones in education its really worth the time.