Invoking a python script in raspberry pi using a transmitter

karkin96 · October 28, 2016, 12:50pm

I managed to get the raspberry pi to invoke a python script automatically when the rapsberry pi is powered up using .sh files.

However, I’m trying to figure out a way to invoke python scripts using transmitters, so that I can invoke different scripts at different times without the need for my pi to connect to the same network with the GCS.

Any advice?

billb · November 6, 2016, 3:47pm

You can add a custom module in MAVProxy to allow you run your own custom scripts. You can essentially use it to detect RC signal changes as one example.

jb321 · April 29, 2023, 4:06pm

How would I do that Bill?

Mustafa_Gokce · April 29, 2023, 10:43pm

Listen RC channels messages from autopilot and act based on those messages.
Here is an example:

github.com

mustafa-gokce/ardupilot-software-development/blob/main/pymavlink/rc-servo.py

"""
    It may be desired to execute certain tasks on a system based on RC channels.
    For example, controlling on-board flight computer software task using an RC transmitter.
    Or you might want to do a certain task based on servo output channels.
    For example, warn user if servo outputs are inconsistent, too high, at certain value, range, etc.
    RC_CHANNELS message contains 18 RC input channels.
    These values can be received from RC transmitter or can be overridden with a MAVLink message.
    SERVO_OUTPUT_RAW message contains 16 output servo channels from autopilot.
    Each channel corresponds a PWM value between 1000-2000 microseconds.

    https://mavlink.io/en/messages/common.html#RC_CHANNELS
    https://mavlink.io/en/messages/common.html#SERVO_OUTPUT_RAW
"""

import pymavlink.mavutil as utility
import pymavlink.dialects.v20.all as dialect


def task_1():
    print("Running task 1...")

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