Arris FPV 250
- Thread starter PCR
- Start date
Paul Rosas
New Member
hey bud did you get ur quad goin? A buddy of mine has an arris and i been trying to help him get it running and seems like motor calibration is way off, but it don't seem to want to calibrate. When he tries to take off it is unstable and when he does get it in the air it is a fight the whole time. Also seems like the power isn't all there. what were the settings you used to correct your issue's? i dont think it's an esc issue or a motor issue...I keep thinking its a cc3d issue due to that it seems like motor number 1 isn't spinning as fast as it should be....any help would be appreciated....thx guys
PCR
Well-Known Member
I got some setting off the internet, I will try to upload them later. I had the same issue and this really helped. I have cut back the controls as well because it is real sensitive. Once you get past the issues it quite a flyer.
Make sure he goes through the Open Pilot setup, you can download the software from their website. It has a calibration to make sure all the motors start at the same time and does a good job of checking all functions and matching up the tranmitter. Just be aware that it disarms to go through this and the last step is to arm it and then save.
Make sure he goes through the Open Pilot setup, you can download the software from their website. It has a calibration to make sure all the motors start at the same time and does a good job of checking all functions and matching up the tranmitter. Just be aware that it disarms to go through this and the last step is to arm it and then save.
Paul Rosas
New Member
We been playing with openpilot and its good at setting up everything. Only thing is that wierdly off engine from the rest. Got some settings for somewhere online and teied it, he got up but really a fight just to hover in a 10' radius. My emax 250 i built i use baseflight and calibrating engines seemed solid, plug in batt with full power...wait for beep...drop to zero power ....beep...unplug and she has been zippin around with the fury. Openpilot seems solid, when he first got the arris it had an esc burn up and cook and took the motor with it....must have been faulty esc due to just one chip on it is all that smoked. He ordered all new esc's and motors....all should be good. Nope...engines all off sync i think...when we try to calibrate, we plug in and hear beeps like openpilot says but those beeps never stop like its hung up on something? We will say stop and unplug and try to see whats up but still wobbly....was looking into fine tuning PID abjustments but thats a bucket of worms of itself having to tune them fly...re adjust and repaet....any help would be awesome i want to see my buddy in the air so i can whoop him up in some races...lol....thx
PCR
Well-Known Member
I would check with motor it is, turn power up slowly and see if one starts before the others or if one does not start. In the Open Pilot Setup you go through a process to make sure all start together, I would then check the motor to see if the software verifies when all the motors start, mine all started at 1600 us, pretty much right on, but if one did not start at the same time the software would compensate. Fine tuning the PID is something that is beyond me, I just copied the settings I found and they seemed to help with stability. I will try to post later. As far as changing the settings on my own, I have no idea what the settings are doing or which direction to change to make corrections, I agree a bucket of worms.
BTW is he choosing the BTV 250 (may be slightly different) in the setup. There are a couple of 250 set ups available but if you look at the details some are for 6" props and others are quite aggressive for experts and racing. I will send some screen shots of my settings which also show new throttle, rudder, aerlion and flaps settings, this will be after I do my test flight this afternoon.
BTW is he choosing the BTV 250 (may be slightly different) in the setup. There are a couple of 250 set ups available but if you look at the details some are for 6" props and others are quite aggressive for experts and racing. I will send some screen shots of my settings which also show new throttle, rudder, aerlion and flaps settings, this will be after I do my test flight this afternoon.
Paul Rosas
New Member
Terryfrank84
Well-Known Member
Don't mean to poke in here, but when calibrating esc's on open pilot, the beeping never actually stops. I usually just stop it after about 25 seconds and carry on with the rest of the set up 
PCR
Well-Known Member
The other trick is to look in the documentation, the flashing blue light will show some information on your configurations, here are the setting I used today, was pretty stable given and wind and I had good control. still lots of power so it was faster than I am able to operate until I get more experience. I will see if I can get some more info on setup out of open pilot later maybe.
PCR
Well-Known Member
Flew it today with some success, was very stable. I still have a major issue with ailerons, discovered that most of my crashes are due to the ailerons, I can only move the stick a fraction of an inch to get the 250 to pitch, any more and it will flip sideways and crash to the ground before I can react to correct. Based on the new settings I should only be a 55 percent. This is confirmed on my transmitter?? the other controls are sensitive but workable.
Noob9875
Well-Known Member
Hello all I'm new to site and the UAV world I'm in the process of my first build a qav250 I have. Done tons of reading and if u go to the forms @ openpilot .org there is loads of info on tuning and finding ur pid values as well as ur UOV or unique isolation value with will help stableize ur quad and for ur esc's u might need a firmware update if u can't get an even balance
Welcome to the forums, and thanks for the tip.
Noob9875
Well-Known Member
Thanks for having me