Matek F722mini gps and esc telem issue

[lethalcobra]

Hi,

As I reported my problems in detail here, I am building a 4" LR style quad with Matek f722mini FCU with INAV 2.6.

Current Behavior

I have connected a Matek GPS-compass unit to it, the serial and I2C connection is working, but the compass is heavily drifting in random directions, the GPS is very uncertain, can rarely get any fiy (2D and 3D either). Also, I am trying to use ESC telemetry on UART RX6, as supposed, but no telemetry is received.

Downgrading to 2.5.X makes the GPS working, but this FW does not support the barometer on Matek F722mini. ESC telemetry is still not working.

Steps to Reproduce

1. Use INAV 2.6.0
2. GPS on UART 3
3. ESC telem: UART 6 RX

Expected behavior

GPS fix in minutes after switch on, ESC data to receive.

Suggested solution(s)

There was something different in the GPS handling in INAV 2.5.X that made my GPS work perfectly but changed in INAV 2.6.0... Is it possible to use the older handling method, please?

• FC Board name and vendor: Matek F722mini
• INAV version string: 2.6.0

Thank you, all the best, and keep flying!

Csaba Kovago, Hungary

[DzikuVx]

Because I have this FC, this GPS and INAv 2.6 I can confirm that it's working exactly like it should be.
Please remember that you have to calibrate the magnetometer after upgrade from 2.5 to 2.6

[lethalcobra]

Dear Pawel, Thank you for your email! First, I am happy to meet with you, I have seen your videos about INAV, thank you for them as well! So, if you happen to read my complete description about my problem on RCGroups forum (yes, it is rather long, but I wanted to give all the details), please help me, what do I do wrong? I installed the 2.6 as it should, I did the "default" in CLI, and I set up all the ports, (GPS, RX, opt. flow, ESC telem) baud-s are default (115200 if I recall it correctly). I had some problems with the GPS, I corrected it in the uBlox Central. Still, if I connect the battery, it needs about 10 minutes to find some sats... If I connect the GPS to the PC via FTDI, it finds fix (on the same spot in the room) in 1-2 mins... Magnetometer was calibrated, opt flow was calibrated, etc. I set up the ESC telem. as you showed in your video (RX6, protocol DShot 600), but no data are coming in... I can send you the "dump" if it is needed! Thank you in advance, Csaba Kovago

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On Tue, Feb 23, 2021 at 12:13 PM Paweł Spychalski ***@***.***> wrote: Because I have this FC, this GPS and INAv 2.6 I can confirm that it's working exactly like it should be. Please remember that you have to calibrate the magnetometer after upgrade from 2.5 to 2.6 — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#6633 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEYMCDJUFMM3GQ23UXDUIRLTAOEV3ANCNFSM4YCJGD4Q> .