I know that this question is a little bit out of the thread but do anyone know if there is a possibility to combine gps, sonar and optical flow in apm mini 3.1. Nice work by the way!
Did you manage to arm without GPS-module on the board? For example, can you totally disconnect the GPS-module and arm the copter with px4flow+lidar or you still need the 3dfix in the home position?
You say that you are using AC3.3.3 RC2. Have you compiled it from the sources or just downloaded through the Mission Planner (as beta version firmware)?
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Do we have transfer from GPS to flow and back yet? :P
Thanks to Goro, Pual, Randy.
I got Optical Flow works well. Here is the video clip fling with OF
P.S : The GPS is for only mag sensor not GPS
Hi Paul,
FW : AC3.3.3 RC2
Pixhawk
I'm still struggling with OF.
I found that Lidar is indicating correct alt and OF log is shown in MP's log analyzer ( but not match each other OF.flow, OF.body IMU.Gyro like wiki )
Even with AC3.3.3 RC2 + EKF_GPS_TYPE=3, my copter can't be armed with the message GPS 3D Lock error.
I followed your instruction about NSH and it shows no error
It'll be very appreciated if you correct me ^^;
P.S : Log file is attached here ( https://drive.google.com/file/d/0B713ZYObFHOTM0dncmFFdzJaOVE/view?u... )
Hi Kyomo,
Your log shows GPS_HDOP_GOOD parameter is not set correctly. You need to set it to 9999.
Alternately, you can disable the pre-arm GPS check by setting ARMING_CHECK to -9.
Thanks Goro,
I found it had not only one problem ^^;
1st, I've set parameters to what you mentioned but still not armed.
2nd, my OF has power issue so I had to power it up via USB first.
( I have two OF but both have same issue -.- )
3rd, the worst one...my I2C splitter had faulty even though OF looked normal blinking LED signal.
By replacing it with other splitter, it worked.
With the above 3 treatment it was armed in Loiter mode without GPS.
Thanks again Goro and Paul you guys' sharing information.
Hi!
Did you manage to arm without GPS-module on the board? For example, can you totally disconnect the GPS-module and arm the copter with px4flow+lidar or you still need the 3dfix in the home position?
Yes, what I did
GPS=disconnected
GPS.Mag=connected
FlightMode=Loiter
and it was perfectly armed.
Thanks a lot!
You say that you are using AC3.3.3 RC2. Have you compiled it from the sources or just downloaded through the Mission Planner (as beta version firmware)?
In case it helps, last week I added a bit more information re the pre-arm checks to the px4flow wiki page.
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