here in brazil, the old school guys in this hobby say to put a fpv system and them correct the flight with the images captured from camera...... just a hint for you! nice job by the way! congrats!
Few years ago I used to autotune every vehicle strictly in this way, using an FPV system. (Check some CX5 footage earlier on this channel for few examples). However, in recent years I actually found it somewhat more productive to run that in LOS, especially in confined spaces. What is more, it's easier to crash a vehicle that misbehaves, if you fly it in FPV. It's sort of easier to get a vehicle back in FPV, but one would not get a good tune if it's too windy for a craft anyway. But, you know what, at the time of me writing it, an FPV system has already been installed and successfully tested, so... :)
Well, just in case you will be faster with your project than me publishing everything - which is quite likely - here are the basics: - The general design is called "coax-copter", at least in terms of Ardupilot, and you can check the general idea here: (ardupilot.org/copter/docs/singlecopter-and-coaxcopter.html). - The firmware is Ardupilot, I use the master branch with a small correction (which, I hope, I can expand and get accepted upstream, maybe to one of 4.6 pre-releases). Something like this is possible to configure with other firmware vendors (though likely with caveats of not being able to control vanes the way it should be done), or, if you are really curious, you can write your own controller, although it only seems easy. - The flight controller is Matek H743-WLITE, but one can definitely use a cheaper controller, provided it can control two motors and two servos. Not all AIO controllers have pads for servos, and not all of them can run Ardupilot (not F411, not 722). - If your controller is not AIO, you need to also get two ESCs to drive your motors. The ones I use here are marketed as "Hee Wing T1 VTOL FX-25A Upgraded ESC BLS", these were quite a random choice actually. It's good if you can get DShot telemetry from them, to be able to use that for filters: if they are running Blheli_s firmware, consider updating to Bluejay; if they are running Blheli_32, you may be lucky to have a fresh enough version that already does that, but if you need to upgrade that, Blheli_32 is gone, and you have to consider an alternative firmware such as AM32. - Motors are Ummagawd Aerolite 2004 motors at 2400 kV, propellers are HQProp 5x3 two-blade propellers with a matching shaft. Servos are EMAX ES9052MD. - Batteries are 4S, and this craft flies on battery cells extracted from disposable vapes. It appears that with the shape of CX7, using different batteries will be somewhat more complicated. These cells still provide enough current to fly non-aggressively. - The remote control receiver is ELRS (an old Happymodel EP1), the video system here is HDZero. All of this is of course more like your personal choice, but ELRS is lightweight enough and good enough to be considered as a good default choice nowadays.
![CX7 :: [2024-04-21] :: In-house AutoTune](http://i.ytimg.com/vi/auVYob7y6cQ/mqdefault.jpg)
![CX7 :: [2024-04-21] :: In-house AutoTune](/img/tr.png)
![CX7 :: [2024-05-10] :: First FPV flight](http://i.ytimg.com/vi/Fh03qNofvz0/mqdefault.jpg)
Amazing job!!!
The CX7 looks so cool outdoors ✨ Nice one, a great milestone indeed 🫡
Yes, it's nice to know that a craft does not get broken immediately after a tiny gust of wind :)
here in brazil, the old school guys in this hobby say to put a fpv system and them correct the flight with the images captured from camera...... just a hint for you! nice job by the way! congrats!
Few years ago I used to autotune every vehicle strictly in this way, using an FPV system. (Check some CX5 footage earlier on this channel for few examples). However, in recent years I actually found it somewhat more productive to run that in LOS, especially in confined spaces. What is more, it's easier to crash a vehicle that misbehaves, if you fly it in FPV.
It's sort of easier to get a vehicle back in FPV, but one would not get a good tune if it's too windy for a craft anyway.
But, you know what, at the time of me writing it, an FPV system has already been installed and successfully tested, so... :)
Where i can find the details about this project?
I will soon publish drawings of all the recent stuff on GitHub, so stay tuned.
@@wowthatflies next month my project submission is there 🥲
Well, just in case you will be faster with your project than me publishing everything - which is quite likely - here are the basics:
- The general design is called "coax-copter", at least in terms of Ardupilot, and you can check the general idea here: (ardupilot.org/copter/docs/singlecopter-and-coaxcopter.html).
- The firmware is Ardupilot, I use the master branch with a small correction (which, I hope, I can expand and get accepted upstream, maybe to one of 4.6 pre-releases). Something like this is possible to configure with other firmware vendors (though likely with caveats of not being able to control vanes the way it should be done), or, if you are really curious, you can write your own controller, although it only seems easy.
- The flight controller is Matek H743-WLITE, but one can definitely use a cheaper controller, provided it can control two motors and two servos. Not all AIO controllers have pads for servos, and not all of them can run Ardupilot (not F411, not 722).
- If your controller is not AIO, you need to also get two ESCs to drive your motors. The ones I use here are marketed as "Hee Wing T1 VTOL FX-25A Upgraded ESC BLS", these were quite a random choice actually. It's good if you can get DShot telemetry from them, to be able to use that for filters: if they are running Blheli_s firmware, consider updating to Bluejay; if they are running Blheli_32, you may be lucky to have a fresh enough version that already does that, but if you need to upgrade that, Blheli_32 is gone, and you have to consider an alternative firmware such as AM32.
- Motors are Ummagawd Aerolite 2004 motors at 2400 kV, propellers are HQProp 5x3 two-blade propellers with a matching shaft. Servos are EMAX ES9052MD.
- Batteries are 4S, and this craft flies on battery cells extracted from disposable vapes. It appears that with the shape of CX7, using different batteries will be somewhat more complicated. These cells still provide enough current to fly non-aggressively.
- The remote control receiver is ELRS (an old Happymodel EP1), the video system here is HDZero. All of this is of course more like your personal choice, but ELRS is lightweight enough and good enough to be considered as a good default choice nowadays.