Next build just started

Gave it a quick power up and nearly had a flyaway. I think decrease the gyro and looptime sampling and increase the filtering. Also, because of this, the tail snapped! A redesign is being printed now.


1 Like

Yep, Reduced gyro to 1khz, increased filtering and heavily lowered my pids.

1 Like

I’m going to make a wild guess and say that you’re using lead free solder (?)

Its definitely not the easiest solder I’ve had. And I’ve run out of flux. :grin:

That’s the issue with lead free solder. It needs higher temperatures, clumps when it cools down and thus doesn’t flow well or aneal properly. I’ve just done a rebuild of a Xugong 2 Pro because the previous owner used lead free solder. With minimal force I was able to pry the wires from the power distribution plate. Unfortunately it’s getting harder to find reliable and sensibly priced sources of lead/tin solder thanks to those hippies.

Nidge.

1 Like

RS Components still stock good quality 60/40 flux cored, no-clean solder.
Recently bought some 0.38mm for my fine joints.

@notveryprettyboy If you are struggling, I can bring you some on saturday.

Cheers
Steve :slightly_smiling_face:

1 Like

I had some from ebay, but ran out, so I’m using some rubbish stuff. But I’ve placed another order. And flux! Cheers anyway.
On a side note, learning lots about servos. Including the fact that betaflight auto tilts the servo depending on the gyro! Cool. And now I have even worked out that I had to reverse it cos it was snowballing into a crazy spin!

Um… Got it in the air, but I have lots of yaw overshoot. Now my frame is bust again!
Third and final try tonight. My yaw p is at 10 and I think I will have to bump up the D to 100 or something. Maybe my servo is just too slow to react.

This should help with your yaw…0.08sec/60’ @ 4.8v

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F223771490102

Ooof! 20 quid! I’m using this I think. I have lost the stickers on the side. It was with an arduino kit. Yeah, I might buy a proper frame too. I like how the servo reacts to the gyro. Maybe I should try to build a walking robot lol.
https://www.ebay.co.uk/i/264568631114?chn=ps&var=564326360689&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&itemid=564326360689_264568631114&targetid=855561001402&device=c&mktype=pla&googleloc=1006656&campaignid=6466521080&mkgroupid=85726690702&rlsatarget=pla-855561001402&abcId=1140486&merchantid=114904112&gclid=Cj0KCQiAvc_xBRCYARIsAC5QT9ltIsOhhYSctYJJajtCSIw3czkteGb6-Z6VILr_vqX3eBb2C2ECm1EaAraBEALw_wcB

On the bench a static test may appear to work ok but the servo has to overcome the gyroscopic forces generated by the motor and the propeller. There’s a good chance that that servo is stalling in flight.

It’s definitely not stalling as it’s wagging in flight. I did make the hole for the tail pivot a little snug though so maybe there isn’t enough torque. I’ll also try putting the linkages on the inner holes of the servo arm to increase torque.

On the plus side, Wilko are doing 5 tricopter frames for £2.75. And yes, I am considering using a wooden coat hangar.
https://www.wilko.com/en-uk/wilko-wooden-coat-hangers-5-pack/p/0327962

New one on me…lol

HAHA :joy::joy::rofl::grinning:

Tricopter mark III is a go! See you tomorrow @Steviegeek @crapflyer.

1 Like

:+1:

Yeah the gardens a mess. But finally getting my tricopter flying half decent.

1 Like

Hey, that’s much better :clap: :clap:
You are doing well with it.

Just a thought, get it to fly 100 yards and you can claim speed recorde for a new category. I can’t see Tricopters on the leader boards ?? @PingSpike

Cheers
Steve :slightly_smiling_face:

1 Like

:open_mouth: Yes. Good point! But. Alas, I have no gps on this. But… I have a spare bn880…