How to add a Rangefinder and OPFLOW sensor to your INAV Quad (Matek 3901-LOX)

Рет қаралды 7,858

3 ай бұрын

www.3dxr.co.uk/sensors-c5/lid...
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Пікірлер: 48

@Terry_Fritz 3 ай бұрын

I've been experimenting with the same Opflow units for almost three years now with mixed success. Those PID settings you showed in the document at the end of the video don't make much difference to performance in my case. I'm using INAV 7.1 and the default PIDs seem to work as well as the pictured ones. Best performance seems to be over surfaces like ceramic tiles with lots of small features for the camera to see. Worst of the lot is plain carpet. When my fluffy back lawn is short I get reliable terrain following and position hold from 100 to around 500mm. A fair bit of bobbing happens at 700mm altitude. Concrete with moss and lichens gives similar results. If anybody is looking to nail their quad in the sky like a DJI MAvic this is not the way to go but fun to try and it will keep you busy. I discovered the global population of Opflow experimenters is a small pool and a knowledge of Hindi and Korean will help. Cheers and have fun.

@Painless360 3 ай бұрын

Performance of the OPFLOW depends on so many things. Not least being over the right kind of surface in good light.. Thanks for the comment. Happy flying!

@thirtythreeeyes8624 3 ай бұрын

You'd probably be better with Arducopter it handles position hold in general much better and tends to do better with the more obscure things like this.

@DWatso Ай бұрын

I'm in that same boat right now with a MicoAir MTF-01, it works to a fashion, but its far from DJI-like even after hours of tuning and experimentation.

@ristokoiva 3 ай бұрын

Check out MicoAir MTF-01, its lidar rangefinder has in comparison to ST VL53L0X in Matek, up to 8 m range. Also I have no initialization issues with MTF-01, when it is very near to ground during power-up. I have one fitted in my SpeedyBee Master 5 V2 frame in the area where O3 unit aluminum heat sink is originally meant to go. It fits perfectly there. On top of the MTF-01 I have Walksnail Avatar VTX V2 unit. Did a custom mount out of TPU and PETG to attach both there.

@MCsCreations 3 ай бұрын

Thanks a bunch for the tutorial, Lee! 😃 I'm definitely going to try it! Stay safe there with your family! 🖖😊

@8cinq 3 ай бұрын

I'd say if you want good stabilisation px4flow is the only option. I wasted a lot of time with Matek OF, but the result was never been good.

@k4x4map46 3 ай бұрын

nice excellent thank you!!

@woutersmith7616 3 ай бұрын

Very usefull,thanx🤠👍🇿🇦

@ojwhaaaojwhaaa5457 3 ай бұрын

Can you use position hold indoors, only using a Matek 3901-LOX and magnetometer without a GPS? I don't mean dead reckoning, just without any GPS?

@Vegan_Cooking_Show 3 ай бұрын

Awesome neato! Can this hardware work under the arducopter system or is it inav only?

@Painless360 3 ай бұрын

There are better performing sensors for Ardupilot. See the links in the description... Happy flying

@gregdavidd 3 ай бұрын

Thanks for this!! I see you have the power lead coming right out the back next to the antennas. Do you think this could affect the VTX output reception for long range?

@Terry_Fritz 3 ай бұрын

The power to the module is very low compared to VTX signals so I doubt if it would interfere.

@gregdavidd 3 ай бұрын

@@Terry_Fritz I guess I should have been more clear I was talking about the power lead for the battery not for the optical flow

@Painless360 3 ай бұрын

No issues here. Happy flying!

@DemersEvan 3 ай бұрын

Lmao I literally got mine today and plan to install it tonight, thanks for the video!

@T.R.E.D. 3 ай бұрын

How did it work out for you?

@Keatondenzer19 2 ай бұрын

What value should we expect for the optical flow calibration?

@Painless360 2 ай бұрын

Whick value specifically?

@lebolk Ай бұрын

Hi ! thanks for the video :) Is there a way to use both LIDAR/OPFLOW with GPS /w Mag at the same time ? Maybe to force using LIDAR from the ground to 3m high, then GPS for higher altitudes ? I'm using MTF-01 btw. thanks !

@Painless360 Ай бұрын

That is kinda how it works... :D

@438fpv 3 ай бұрын

Just about to do zohd altus build and was thinking about having one of these. Can you havve them switch on/off via a switch?

@Painless360 3 ай бұрын

I wouldn't use this sensor board. See my fixed wing Rangefinder video... Happy flying

@sirburns1825 3 ай бұрын

Hey, a bit of topic, but what would you say would be the biggest factor when choosing between inav and betaflight for my quad?

@Painless360 3 ай бұрын

m.kzfaq.info/get/bejne/j5dip6SJ063UpI0.html may help... Happy flying

@ArikaFortuna 2 ай бұрын

I have mtf-01 optical flow and lidar sensor, can i soldering it in i2c pad (sda/scl)

@Painless360 2 ай бұрын

I've not used that one. Best of luck

@Hdig892 3 ай бұрын

Can it be used with arducopter on pixhawk 6?

@Painless360 3 ай бұрын

I wouldn't, this isn't a great quaility piece of kit. See my video on the Benewake rangefinder, it is a lot more useful for flying a lower levels.

@FatSlowButter 2 ай бұрын

what is the purpose of the sensor again? Is it used for autonomous flights?

@Painless360 2 ай бұрын

Help it maintain position in a hover and land automatically more precisely.. Happy flying

@oloendithas 3 ай бұрын

I've never been able to get 2 meters effectively with those units (had three of them). Above 80cm always went crazy showing random numbers. My idea was to make my CineLog35 stable indoor. But the limitation of ~1 meter was really disappointing(

@Painless360 3 ай бұрын

Yeah, Rangefinder sensors like the Benewake TF units are far superior... Happy flying

@PickMe_Gaming Ай бұрын

how about the modes? pos&hold, nav altitude, heading hold and surface in one switch?

@Painless360 Ай бұрын

Add SURFACE mode to the flight mode when you want to use the Rangefinder... Happy flying

@PickMe_Gaming Ай бұрын

@@Painless360 yeah when I add SURFACE mode my drone up and down do you have an idea what happen to my drone?

@Painless360 Ай бұрын

Not without looking at the logs and your setup... If you find the cause, please share....

@PickMe_Gaming Ай бұрын

@@Painless360 scale value: 6.796875

@anatoliisavenko8493 2 ай бұрын

Does it require some specific mode like SURFACE or something else? Or does it work by default when you are under max_surface_altitude?

@Painless360 2 ай бұрын

It's always supplying height data... Happy flying

@anatoliisavenko8493 2 ай бұрын

@@Painless360 Yes correct, but in which mode or modifier (like SURFACE) INAV uses that data from rangefinder and optical flow. Is it enough to switch the drone into postion+alt hold mode? If rangefinder data is present for the flight controller will it use it automatically as more precision values? The same question regarding data from optical flow. INAV uses it as more precise data and ignores the accelerometer when opt flow data is present by sensors? Thanks for your answers!

@Painless360 2 ай бұрын

That's my understanding.... Happy flying

@PickMe_Gaming Ай бұрын

my debug 1 and 2 does not match why can you help me?

@Painless360 Ай бұрын

Use the method shown. What troubleshooting have you already done?

@PickMe_Gaming Ай бұрын

@@Painless360 I follow the steps in your video seems the debug 1 and 2 does not match I don`t know why does not match

@Painless360 29 күн бұрын

I cover that in the video, and how to change the settings.... best of luck