Custom SITL error

1

@Jaeyoung-Lim

I’ve built a custom SITL drone. Got it loaded into gazebo, and whenever i try commander takeoff, the props start rotating, and give this error:

WARN  [commander] Imbalanced propeller detected, landing advised

How do i fix this?

Is it a 3D model issue, or any software issue??

2

@AshokKumar You can find a similar discussion here: Unable to launch Custom Airframe (proprietary) on SITL. · Issue #19457 · PX4/PX4-Autopilot · GitHub

3

@Jaeyoung-Lim

I have this error when I try to execute $make px4_sitl jmavsim on ubuntu 18.04 How can I execute the sitl jmavsim correctly ? (I downloaded all the requirements for sitl, jmavsim and gazebo)

[1/2] launching px4 jmavsim_iris (SYS_AUTOSTART=10017)

| ___ \ \ \ / / / |
| |/ / \ V / / /| |
| __/ / \ / /| |
| | / /^\ \ ___ |
_| / / |_/

px4 starting.

INFO [px4] startup script: /bin/sh etc/init.d-posix/rcS 0
env SYS_AUTOSTART: 10017
INFO [param] selected parameter default file parameters.bson
INFO [param] selected parameter backup file parameters_backup.bson
SYS_AUTOCONFIG: curr: 0 → new: 1
ERROR [param] Parameter UXRCE_DDS_KEY not found.
SYS_AUTOSTART: curr: 0 → new: 10017
CAL_ACC0_ID: curr: 0 → new: 1310988
CAL_GYRO0_ID: curr: 0 → new: 1310988
CAL_ACC1_ID: curr: 0 → new: 1310996
CAL_GYRO1_ID: curr: 0 → new: 1310996
CAL_ACC2_ID: curr: 0 → new: 1311004
CAL_GYRO2_ID: curr: 0 → new: 1311004
CAL_MAG0_ID: curr: 0 → new: 197388
CAL_MAG0_PRIO: curr: -1 → new: 50
CAL_MAG1_ID: curr: 0 → new: 197644
CAL_MAG1_PRIO: curr: -1 → new: 50

  • SENS_BOARD_X_OFF: curr: 0.0000 → new: 0.0000
  • SENS_DPRES_OFF: curr: 0.0000 → new: 0.0010
    INFO [dataman] data manager file ‘./dataman’ size is 7866640 bytes
    etc/init.d-posix/rcS: 39: [: Illegal number:
    INFO [init] jMAVSim simulator
    INFO [simulator_mavlink] using TCP on remote host localhost port 4560
    WARN [simulator_mavlink] Please ensure port 4560 is not blocked by a firewall.
    INFO [simulator_mavlink] Resolved host ‘localhost’ to address: 127.0.0.1
    INFO [simulator_mavlink] Waiting for simulator to accept connection on TCP port 4560
    Buildfile: /home/burak/src/PX4-Autopilot/Tools/simulation/jmavsim/jMAVSim/build.xml

make_dirs:

compile:

create_run_jar:

copy_res:

BUILD SUCCESSFUL
Total time: 3 seconds
Options parsed, starting Sim.
Starting GUI…
Exception in thread “main” java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:61)
Caused by: java.lang.UnsatisfiedLinkError: Can’t load library: /usr/lib/jvm/java-11-openjdk-amd64/lib/libawt_xawt.so
at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2633)
at java.base/java.lang.Runtime.load0(Runtime.java:768)
at java.base/java.lang.System.load(System.java:1837)
at java.base/java.lang.ClassLoader$NativeLibrary.load0(Native Method)
at java.base/java.lang.ClassLoader$NativeLibrary.load(ClassLoader.java:2445)
at java.base/java.lang.ClassLoader$NativeLibrary.loadLibrary(ClassLoader.java:2501)
at java.base/java.lang.ClassLoader.loadLibrary0(ClassLoader.java:2700)
at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2651)
at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:830)
at java.base/java.lang.System.loadLibrary(System.java:1873)
at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1399)
at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1397)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.desktop/java.awt.Toolkit.loadLibraries(Toolkit.java:1396)
at java.desktop/java.awt.Toolkit.(Toolkit.java:1429)
at java.desktop/java.awt.Component.(Component.java:621)
at me.drton.jmavsim.Simulator.(Simulator.java:193)
at me.drton.jmavsim.Simulator.main(Simulator.java:944)
… 5 more