Coming soon - New "mRo Location One" a CAN GPS sensor

RomanD · February 20, 2020, 6:32pm

Hi @Dave84,
I have disabled the automatic offset learn.
I’ve left only the two external mRo units active (one of them as primary).
I’m using V4.0.0.

Dave84 · February 20, 2020, 6:43pm

Pls just update your firmware to the last versione… just active all the compasses… enabled the automatically learn offset and calibrate it again

My unit after the calibration

RomanD · February 20, 2020, 6:52pm

Shouldn’t it work also without the internal compass?
regarding the Automatic offset learn - I’ve read that it’s functional only with COMPASS_LEARN = 3, which is InFlight learn - and I’m unable to pass the PreArm checks currently…
Regarding the latest FW version - are there any relevant fixes in 4.0.1/4.0.2?
Thanks!

Dave84 · February 20, 2020, 7:00pm

In 4.0.2 you will have the corrections about small bugs found on the previous version…

i will attach you a link so you can follow the previous versions and future developments…

github.com

ArduPilot/ardupilot/blob/master/ArduCopter/ReleaseNotes.txt

ArduPilot Copter Release Notes:
------------------------------------------------------------------
Copter 4.0.3-rc1 20-Feb-2020
Changes from 4.0.2
1) Bug Fixes:
    a) "RCInput: decoding" message watchdog reset when using MAVLink signing (Critical Fix)
    b) HeliQuad yaw control fix
    c) Do-Set-Servo commands can affect sprayer, gripper outputs
    d) BLHeli passthrough fix for H7 boards (CubeOrange, Holybro Durandal)
2) USB IDs updated for "composite" devices (fixes GCS<->autopilot connection issues for boards which present 2 USB ports)
3) RCOut banner helps confirm correct setup for pwm, oneshot, dshot 
4) ZigZag mode supports arming, takeoff and landing
------------------------------------------------------------------
Copter 4.0.2 11-Feb-2020
Changes from 4.0.2-rc4
1) MAVFTP stack size increased to 3k (fixes reboot when using MAVFTP)
------------------------------------------------------------------
Copter 4.0.2 11-Feb-2020 / 4.0.2-rc4 05-Feb-2020
Changes from 4.0.2-rc3
1) Bug Fixes:

This file has been truncated. show original

In my opinion better use the external compass coz the one inside can be affected by mag field noises

Dave84 · February 20, 2020, 7:14pm

Just let me know pls the results when you have performed a new calibration…

RomanD · February 20, 2020, 8:22pm

Will do, thanks @Dave84

RomanD · June 14, 2020, 8:42am

Hi Guys,
I’ve encountered a new issue with the latest mRo units - they don’t pass the calibration process.
Reviewing the different units using the UAVCAN GUI I’ve observed 3 different FW/SW versions:

Only the 1.0.d5729326 works fine. Any ideas?
Thanks

Dave84 · June 14, 2020, 1:11pm

Good day l, you have flash the correct firmware for the LocationOne? As now the firmware are board exclusive you need the correct version.
I’ve compiled the last firmware version… if you need i can attach you the binary file.
on which fc are you using it?

RomanD · June 14, 2020, 2:52pm

Hi @Dave84 - We have not flashed any of our Location One units. Which version are you using? (the 1.0.d5729326 seems the only one that works currently).
How do flash the units? Where do you get this version? is it mRo official?
We’re using mRo Z7 FC.
Roman

Dave84 · June 14, 2020, 3:46pm

me im using uavcan gui tool for flash my unit…sometimes MP. im using the last version I’ve built for the mRo LocationOne… work very well

RomanD · June 14, 2020, 3:56pm

I prefer to have an official mRo version to work with. @pemase, can you advise?

Dave84 · June 14, 2020, 4:06pm

This is the firmware for the LocationOne…the latest firmware version.
mroLocatioOne AP_Periph.bin (105.9 KB)

Quadzilla · June 14, 2020, 4:28pm

I been installing the location one on my new printed frame and they are excellent. Here a video of my test flights recently two thumbs up : https://www.dropbox.com/s/fjblcg96u8ihtty/location-one01.mp4?dl=0

you see a tad drop in the end but that more to do with the quad not being flown now everything seem acclimated and fly’s even better!. I think a lock is good you could do the led paint in the sky with swarming.

RomanD · June 17, 2020, 4:13am

Tried installing the latest AP_Periph 1.1.0 (https://firmware.ardupilot.org/AP_Periph/stable/f303-M10070/).
But still having the same issue with the calibration.

Indoors I manage to calibrate, when outdoors - calibration fails.
Log Log2
Any ideas?

Dave84 · June 17, 2020, 4:29pm

Did you check the wirings? are you using mro control zero o x2.1 777?

RomanD · June 17, 2020, 5:24pm

Yes I have, using mRo Control Zero F7.

Dave84 · June 17, 2020, 8:36pm

ok… do you have the fix gps position?

vosair · June 17, 2020, 10:05pm

I have a few CZ with L1 working without any issues. I’ve found mRo support to be very responsive. Give them an email.

RomanD · June 18, 2020, 3:55am

I do.
The issue is that sometimes I manage to calibrate and sometimes I don’t (out in the open field)

Dave84 · June 18, 2020, 5:14am

ok…, just try flash the binary i sent you, later I’ll attach a small wiring scheme so you can check it.