ModalAI Forum

@James-Strawson, @Zachary-Lowell-0 can we expect an update in the near future?

@James-Strawson sadly that did not help.

@Zachary-Lowell-0 I don't know if there is another way to mount the 5G board (see picture - we sticked the antennas to the arms in the meantime).
.

We assumed since all of the components are official ModalAI products, that they would work together.

@Kory4Drone sadly there has been no update.
@Zachary-Lowell-0 is there anything ModalAI can do to support?

@nuallaino that might be.
But for us the GPS-sensor usually works, we only have problems when using 5G and/or video transmission.

We will test if an external GPS-sensor fixes the situation.

@Zachary-Lowell-0 actually I have to correct that statement.

I have now invested quite some time into testing the whole situation thoroughly.
The drone's GPS works fine without 5G and video transmission. The drone's GPS has problems with 5G (at least where we are testing - populated area, probably some other interferences). The drone's problem also has a problem with the video transmission.

So basically, both 5G and video cause the problem. But it does not even work with the 5G module that ModalAI provides. Is there any further help available?

For anyone wondering:
We figured out what the problem was.
The 5G is not the only source for interferences.

It turned out the video transmission hardware we use (Siyi MK 32 https://shop.siyi.biz/products/siyi-mk32?VariantsId=10619) blocks the GPS from finding any satellites.

We will try to somehow shield the GPS from the video transmission signal.

@Zachary-Lowell-0 FYI

@Alex-Kushleyev thanks - I think the voxl-streamer was enabled, but not running.
Problem solved, thank you!

@Zachary-Lowell-0 yes, we test outside.
The only difference between the Starling 2 and the Starling Max is the 5G board. On the Max we have the 5G board installed, which seems to be the root of the problem.
We have tried switchen the GPS modules and the VOXL board itself in the meantime, and the GPS always works on the Starling 2, but not on the Max.
Is there something additional to do when installing the 5G board? We swapped the Wifi module for the 5G module, configured voxl-modem and it works. But GPS does not work with it it seems.

Besides, output for voxl-px4.conf:

GPS=AUTODETECT
RC=CRSF
POWER_MANAGER=VOXLPM
DISTANCE_SENSOR=NONE
OSD=DISABLE
DAEMON_MODE=ENABLE
SENSOR_CAL=ACTUAL
EXTRA_STEPS=()

@Alex-Kushleyev I have tried using VLC as well, that does not work.
voxl-streamer is configured correctly (I think):

"input-pipe":   "hires_small_encoded",
"bitrate":      1500000,
"rotation":     0,
"decimator":    1,
"port": 8900

But when I try to connect via rtsp://<IP>:8900/live nothing happens.

Hello,

I am a bit puzzled. We are using a Starling 2 and a Starling 2 Max.
On the Max we do not get any GPS Satellites. I thought that the sensor might be broken, so I swapped the sensors, which did not affect the outcome.

Both drones show the same services running.

The output for voxl-inspect-gps is 0.00000 and 0.000000 for lat and long, 0 Stallites.

For px4-listener sensor_gps I get:

TOPIC: sensor_gps 

sensor_gps 
    timestamp: 89961786 (0.126000 seconds ago) 
    timestamp_sample: 0 
    time_utc_usec: 0 
    device_id: 11272245 (Type: 0xAC, SERIAL:6 (0x00)) 
    lat: 0 
    lon: 0 
    alt: -17000 
    alt_ellipsoid: 0 
    s_variance_m_s: 36.37900 
    c_variance_rad: 3.14159 
    eph: 4294967.50000 
    epv: 3750000.50000 
    hdop: 99.99000 
    vdop: 99.99000 
    noise_per_ms: 86 
    jamming_indicator: 59 
    vel_m_s: 0.00000 
    vel_n_m_s: 0.00000 
    vel_e_m_s: 0.00000 
    vel_d_m_s: 0.00000 
    cog_rad: 0.00000 
    timestamp_time_relative: 0 
    heading: nan 
    heading_offset: 0.00000 
    heading_accuracy: 0.00000 
    rtcm_injection_rate: 0.00000 
    automatic_gain_control: 0 
    fix_type: 0 
    jamming_state: 0 
    spoofing_state: 1 
    vel_ned_valid: False 
    satellites_used: 0 
    selected_rtcm_instance: 0 

The cables and sockets look ok, but of course it might be a broken cable.

Is there anything else I can test/try?

BR
Bernhard

Hi @aashry, did you actually solve this problem?
I am running into the same issue.

Camera config is alright, stream config seems to be right as well, but I cannot get an encoded stream in either voxl-portal or vlc.

Any help would be greatly appreciated.

BR

@ijones2

Hello Ivy!

Just a suggestion - I have seen that problem, but it only occurred when using USB-C to USB-C. Have you used a USB-A to USB-C cable?

Are you using a native Linux machine or a virtual machine?

(Not an expert, just trying to help )

BR
Bernhard