UDP issues

Ianth3impler

Hello, I am not new to Pixhawk but I am new to using a RPI as a wifi bridge, I have been working on this for a couple of hours so far and can not for the life of me get the telemetry data on to mission planner nor can I get GStreamer to work. This is what I am getting for Telemetry.

Found 2 links
Valid Serial Link: aseriallink Found at: /dev/ttyACM0, baud: 57600
Valid Serial Link: aseriallink Found at: /dev/ttyACM0, baud: 57600
Error opening Serial Port: /dev/ttyACM0 open: No such file or directory
Link: aseriallink failed to initialise and is dead
Valid UDP Link: 192.168.1.15 Found at 192.168.1.15:14550 -> 0
Command line arguments parsed succesfully.
Links Initialized, routing loop starting.
Error opening Serial Port: /dev/ttyACM0 open: No such file or directory
Link: aseriallink failed to initialise and is dead
02/08/2019 19:52:08 Telemetry started
Error opening Serial Port: /dev/ttyACM0 open: No such file or directory
Link: aseriallink failed to initialise and is dead

Any help would be nice. I swapped between 3 pixhawks, and made sure the USB between the RPI and pixhawk was good.

Sinamics

Ianth3impler Hi
Error opening Serial Port: /dev/ttyACM0 open: No such file or directory
This means RPI cant see the pixhawk. Try using another USB cable.

Ianth3impler

Sinamics Yep that was the issue, dumb part on me I thought I had checked that. The RPI is talking to the Pix now but I cant get the RPI to talk to mission planner now. I have my RPI hooked into up to a Ethernet cable for now on the same network as my PC to rule out any wifi issues. On UAVcast ground control tab I have my computers IP under host and Port 14550 for telem (UDP), on mission planner 2 under the tab communication I have (UDP port 14550) selected with no luck. Thanks for helping

Ianth3impler

Sinamics Do i need to do anything to the RPI or Pixhawk to establish a connection over over the GPIO pins and tele 2 port? I have the RPI and pix connected over GPIO and GPIO tx/rx selected and get no UDP link, when I plug in the USB it works.

Sinamics

Ianth3impler Its very important that you also use the ground cable between Pixhawk and RPI.
Telem TX => RPI RX
Telem RX => RPI TX
Telem Ground => RPI Ground

Ianth3impler

Sinamics Cool got that worked out. I actually had to change the baud rate for the tele 2 port to match the RPI. Anyway I can switch video between two cameras? also I set up a logitech C615 and can't get the video to stream, it will only stream with a RPI cam.

Sinamics

Ianth3impler Yes that should work just fine. Do you get any errors when starting the camera?
check the camera logfile.

Ianth3impler

Sinamics Yep got it working, thanks for the quick support. One more question, If I run a mini pixhawk racer with a RPI zero W with a eithernet hat will the program run correctly? I am building a very small drone. I need some way to stream at least 720p. thanks

Sinamics

Ianth3impler That should work just fine.