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Everything posted by Spitfire76

  1. Let's take a step back and continue to use the retractable landing gear as an example as I've had experience in setting that up. Firstly you have to of course know what is type of signal is required by the landing gear hardware for it to deploy and retract. In my case the landing gear controller required a PWM signal. Originally I did not have this driven from the flight controller but simply use one of the spare PWM outputs of the receiver which was in turn mapped to a switch on my transmitter. This worked but what would have happened if my drone lost the transmitter signal and the failsafe a
  2. Hello @UnoMatt and welcome to the Forum. Not sure how to answer your question but it may help me if you explain a bit more about your project. It looks like you are building a flight controller from scratch using an Arduino Uno. 8 bit processors were first used in early flight controllers but these days 32 bit processors are mainly used. For example the open source Ardupilot software that I use for my drones was originally designed to work on Arduino processors, hence the "ardu" in the name but the software evolved so much it required more memory and processing power and several years ago the
  3. Only having 1-14 channels for servo outputs is likely is due to having a limit of 14 PWM outputs on the original Pixhawk hardware (8 main + 6 AUX). As you may know the 16 channels coming from the receiver need to be allocated to various functions. Some of these functions map to servo functions and some do not. For example RTL does not map to a servo function but needs an input channel from the receiver to trigger it. On the other hand landing gear needs both a channel from the receiver and a servo output. Also rather than just directly mapping a receiver input channel to a servo output (p
  4. On the side of the flight controller that has the 8 main and 6 aux outputs there should be 2 more connections. One is marked RC which is the sbus connection from the receiver and the other is marked SB which is the sbus out. This should contain all 16 servo function outputs but it has to be connected to a device that understands the sbus protocol. For example I have a camera gimbal that has a controller with a sbus input so can allocate 2 channels to pitch and pan. If you want to control a device that only understands a PWM input you would need to use a sbus to PWM convertor. So have you
  5. I believe that they would be available on the sbus output of the pixhawk and you would configure them with SERVO15_FUNCTION and SERVO16_FUNCTION. What exactly do you need to do ?
  6. I wonder if they plan on further collaboration with Parrot since they use their hardware for the optional controller ?.
  7. When you say "programmed" I assume that you mean flashed with flight controller software so the approach I would take is to first decide what software you want to use and see if the board is supported. Since the software is constantly being improved it typically requires more memory and processing power and older boards may no longer be supported with later versions. I believe that Betaflight is the most popular flight controller software for FPV racing so I would start here. https://github.com/betaflight/betaflight/wiki
  8. While I believe that controller was good in its day there is a lot more choice available today. Are you planning on building a drone and if so what do you want to use it for ?
  9. Hello @MarcusJubin - great to see another drone builder join the forum. The only component on your list that I am familiar with is the Holybro Kakute F7 flight controller and I really like it. I should point out that I am not using it for racing or freestyle but as an economical flight controller to run http://ardupilot.org open source software. The main features that I like is the separated IMU board which means you can mount the main board directly on the frame without vibration dampers. I also like the serial ports can be inverted which means I can directly connect to frisky s.port for tele
  10. Correction to my previous post - its more like 1h 37 mins into the youtube video.
  11. Thanks @pemese for this post. You might want though to check the link "To buy click here" as I get a 404 error - page does not exist https://store.mrobotics.io/mRo-Control…/mro-ctrl-zero-f7.htm
  12. @Isabella | UAV Coach - Looks like today was the launch! Wow, the R2 is just $999 and one can be reserved for $100. https://www.skydio.com Its interesting that they can sell it for that price as apparently its made in the USA by a US company! The CEO of Skydio, Adam Bry, joined today's live DSTW episode (he joined at 53 mins in)
  13. Spitfire76

    pixhawk models

    or that if its still a Taiwan manufacturer it won't be accepted by the DOD or potentially by any US government agency if the American Security Drone Act of 2019 is passed into law ? https://discuss.ardupilot.org/t/american-security-drone-act-of-2019/47428
  14. Spitfire76

    pixhawk models

    @Av8Chuck, I don't see in @bhhagai original post a need for an USA manufactured flight controller so this maybe a non-issue for this thread but I am interested in what you say about the cube. What I understood is that the Blue Cube is identical to the black cube but is manufactured in California's bay area instead of Taiwan and due to the higher labor costs is double the price ($500) of the black cube. Are you saying that this is false ?
  15. Spitfire76

    power module

    I would suggest using Mauch Power Modules as these use hall-effect sensors for current sensing that is more accurate than others that measure voltage change across a low ohm resistor. I believe that they can also support multiple batteries as well as a redundant power distribution configuration. http://ardupilot.org/copter/docs/common-mauch-power-modules.html https://www.mauch-electronic.com/apps/webstore/
  16. Spitfire76

    pixhawk models

    Hello @bhhagai and welcome to this forum. I assume that you are using the RPi as a companion computer connected via a serial connection to the flight controller. http://ardupilot.org/dev/docs/raspberry-pi-via-mavlink.html I imagine that the cellular modem would be connected to the RPi to provide command, telemetry and possibly a video stream from a camera connected to the PI. I don't have one of these but you may want to check into this CubePilot (Pixhawk 2.1) carrier board https://dronee.aero/pages/lychee I like the idea of being able to replace not only the Cube Fli
  17. 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 ?.
  18. 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.
  19. 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.
  20. Have you only tried one ESC ?. If not try another as you may simply have a bad ESC.
  21. News regarding the aeronautical knowledge test for recreational drone pilots https://www.faa.gov/news/updates/?newsId=94325
  22. 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
  23. I believe that Bobby did say that the video breakup could have been due to the proximity of the electrical power lines.
  24. Version 2 of the rules published and team registration form is now available. https://uavchallenge.org/medical-rescue/