Hi,
Here are mine if you are still having trouble:
let me know how you go!!
Hi,
Here are mine if you are still having trouble:
let me know how you go!!
The CoaxCopter flies! Have only tried Acro mode so far, but intend to test GPS soon!
Thanks @Leonardthall and @rmackay9!!
We need a video!!!
Congradulations!!
Hope to record some flight this afternoon. Then I will try a 6S ducted fan singlecopter!
The coaxcopter is kinda funny because my landing gear is too flexible. I have to punch the throttle to take off or else the copter will do the Twist and shimmy on the ground. I could probably tune it out in PIDs, but itās not really a problem.
Hereās the video! Sorry that the copter falls out of frame a few times.
Great! Thanks for sharing, why donāt start to improve the single/coax copter in the wiki to spread the world with this new frame/design type inspiration and attract mekers to join testing ?
On my EDF singlecopter (see top post) I have my fins installed in an X configuration rather than the typical + configuration. Is there a setting that will allow be to rotate the copterās coordinate system so that pitch forward will cause forward motion of the X orientation? I know how to rotate the AHRS orientation of the board to the frame so that the PX4 and copter are aligned, but thats not what Iām asking here.
Itās basically the same transformation between flying a quad in the + config and the X config.
What do I do?
Thanks!
Hey all! This is an awesome thread and I am excited to contribute in any way I can. I have a Coax Copter setup with 4 fins (4 HS-125MG servos on each fin) and two 6s packs running in parallel. I am using a Holybro Pixhawk which takes V2 of the code in this thread. I have uploaded the most recent coax code from dropbox via QGC and I have two questions for this forum.
How do you guys do the compass/accel calibration for a coax copter? My pixhawk is oriented with itās arrow pointing toward the motors. The motors are at the top plugged into ch 5 and 6. When I try to arm it says it canāt arm because itās leaning (even though itās pointing straight up). Makes me think I have performed the calibration incorrectly. SOLVED: Calibrate as if when the copter is in the normal flying position (props on top) and the ānoseā of the aircraft is parallel to the ground
My servo is buzzing (I only plugged in channel 1 cause I had read earlier that servos had been burned and I didnāt want to do that) and gets very warm after a while. Based on the thread I was under the impression that this issue had been fixed. SOLVED: But it may be a bandaid fix. I had to change MOT_SV_SPEED to 50 in MP @Leonardthall @rmackay9
Let me know if anyone has any ideas.
Regarding Issue 1. Dissabling the IMU pre-arm check allows me to arm both motors and to see them spin. More of a band aid then a solution so let me know if you guys have lean issues. SEE ABOVE: Donāt dissable pre-arm checks. Simply calibrate correctly.
When you say you borked the Pixhawk for a bit. How exactly did you fix this? I have done the same thing where the Pixhawk boots fine but then the Main LED turns off and I canāt connect to it. I have re-flashed the firmware to factory standard but still the Main LED doesnāt change. @DroneWrangler
Hi Everyone - My 1st post. In fact 1st everything really. I am building a coax copter to my own design - about 60% complete, but the first un-tethered flight is many months awayā¦ It has 4 motors - 2 for each rotor, and 4 servos - at 90 degrees - activating a shared swash plate. Phew !
It has an Arducopter 2.8, and Iāve just got Mission Planner past the Pre-Arm checks. I chose the standard Heli frame, because nothing else is close, so obviously itās not going to work like this. Can somebody please advise me how to download (not upload ?) the Coax firmware ? Is there a central source of information, or is it too early in the development cycle for that ? Iām a semi-retired developer, and fancy looking into the code at some stage, but for now it has to be binaries only. Also, Iām happy to beta-test.
I used one of the most recent links to Dropbox in this thread. That will give you 4 files you can download. You would select coax v1 or v2 depending on your board.(I just used trial and error for this).
In Mission Planner, I select Load Custom Firmware, and choose ArduCopter-v1-coax.px4. It then scans the comports and reports that it canāt find the board. I then tried the Force PX4 Bootloader option beforehand, with the same result.
I read somewhere that QGroundControl should be used for PX4 files, but this doesnāt find the board either. Iāve tried different USB cables - also no result.
Mission Planner seems very happy with the standard firmware options - I can load any of the standard options.
Is there another binary format that I should be using, or am I doing something wrong ?
If you have a Pixhawk you should use v2.
I have the Arducopter vr 2.8
I have no idea what board that is, but Iāll bet it is a Pixhawk clone and you need the v2 anyway.
EDIT: Or is it an old APM clone? If it is, you canāt use this firmware. The old APM boards are limited to old firmware, 3.2.1
I donāt like the sound of this ā¦ Youāre going to tell me Iāve wasted my money. If so, where do I buy the latest recommended flight controller ?
Why are you using an old APM? This hardware canāt take the latest software (Not enough memory space)
At present (OCT 2016) The best one is
But if vibrations arenāt too much of a problem and you want a small unit then
AUAV-X2
There are so many clones of all sort of the pixhawk that the choice is yours!
Henri
Like Henri said thatās old hardware, a clone of the old APM boards. There are a lot of different supported boards:
Thanks for the advice everyone. But I only bought that āold APMā a few weeks ago ! This is all new to me, so I made a bad decision. Iām saving up for a real one now ā¦