Bench testing of flight controls...everything seems to be ok.
https://www.youtube.com/watch?v=dTysKyzhH-Q&feature=youtu.be
just some details on firmware (AC3.2rc14):
- added the fourth servo and changed the control laws to fit a 4 points swashplate layout;
- added extra servo for engine throttle control mix...not sure it will work fine (i have made some tests only on a little .30 helicopter in stabilize and acro mode);
StatorGator and Futaba GV1 fitted as a good and reliable backup solution, even if expensive and unfortunately hard to find in these days.
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Fantastic work. I can't wait for the official release of the firmware (for Pixhawk gasser helis). I have a couple of Airstar International Evolutions I'd love to try this on
Hi Ferruccio,
Any update on your project? Any idea when your code for gasser helis will be available for download?
Chris, I have made a second test machine too, a T700 with OS15GT gasser engine. Code is working good, but I cannot answer directly to your question. Better to ask to developers if they are going to include it in the next releases.
Here a short footage of my DFC with servo throttle function:
https://www.youtube.com/watch?v=jddgw5JxRrw
I added a feature on the attitude controller to deal with tail rotor trust effect, instead of using trim on roll axis:
https://www.youtube.com/watch?v=Q87bEu2MDVc
Hi,
looks nice. I just used the 'Accelerometer Calibration' by giving the heli enough tilt to the side in the 'Level' position.
Ultrafuge that's correct, but it might be ok for just one combination of collective pitch/tail rotor offset (Hovering condition).
So if, for example, you change your payload during one mission, you might re-adjust the trim to achieve the no-drift condition again, or just keep pushing the stick on one side.
I feel it quite uncomfy...so I thought why not relate the collective amount with a roll trim? sounds much easier, and in my case, since i'm going to attach heavy (and variable during flight) loads to the helicopter, it's the easiset way of achieving a balanced flight attitude for each payload condition...
Sorry for my bad English, looks nice = Hey great, I like it, when can I get it :-)))
I agree 100% with your reply !
Sound ! I have no problems to share my fw if you want to give a try. Better would be if Robert or Randy could have a look at the fw, since i have made some other mods, like active throttle control for gassers/nitro (Robert I tried implementing your suggestions, it works, but servo has a sort of glitches, randomly, so I have rebuilt the code in a different way, now seems to be working properly) and CCPM H4 swashplate.
Thank you for your kind proposal, I am very interested in trying it. Ofcourse it would be nice to have it in the regular code, but I don't know how long that takes.
I am flying electrified with CCPM H3 swash plate. Could you please post the code or tell me where to find it.
Another question, do you have a working Ch7 ?
Sorry Ultra, by ch7 you mean throttle function?
I think the easiest could be to send you the .px4 file. Are you using Pixhwak? I still have to update my GitHub for the code (I didn't have so much time these last weeks).
I have made two versions of the roll-comp function, one has a linear behavior, centered (=0 roll_offest) in the collective mid position (0° blades incidence, as for the tail rotor pre-comp).
The second one instead is sinusoidal, centered in the collective mid position too.
I have done the second type of roll_comp to take into account the increase of rotor lift while increasing the roll tilt angle because I think the tilt angle required is non linearly linked to the collective increase...just guessing!
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