Return information from module

Luka114 · February 14, 2019, 12:34pm

Hello,

I am new to drone programing and need help with some issues I have. I am using pixhack 2.8.4 and programing it through python 2.7.13 (dronekit).

Sometimes when I write the command for the drone to change the flight mode or takeoff it seems like it just ignores the command, so I just looped the command until it did what i wanted. I was wondering if there is a way the module can send the return information like:“Yes, I received the command you sent me, just wait until I process it.”. That way the loop doesn’t send unnecesary unnecessary commands.
I would want the drone to send me the start coordinates.
If there is a way I can follow the drone coordinates actively while it’s flying and give the drone the next command as soon as it comes somewhere near the coordinates I wanted it to go to (I want to compare drone coordinates and the target coordinates).

I hope that the questions make sense, and someone can help me with the issues I have. Thanks!

roman-dvorak · February 14, 2019, 12:59pm

Hi @Luka114,

I have no experiences with dronekit. But i would recommend you to use dronecode. They have nice examples and in this forum are developers of dronecode.

Example with arm procedure and changing flight modes:

github.com

Dronecode/DronecodeSDK-Python/blob/master/examples/takeoff_and_land.py

#!/usr/bin/env python3

import asyncio

from dronecode_sdk import connect as dronecode_sdk_connect

drone = dronecode_sdk_connect(host="127.0.0.1")


async def run():

    print("-- Arming")
    await drone.action.arm()

    print("-- Taking off")
    await drone.action.takeoff()

    await asyncio.sleep(5)

    print("-- Landing")

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Example for obtaining drone position:

github.com

Dronecode/DronecodeSDK-Python/blob/master/examples/telemetry.py

#!/usr/bin/env python3

import asyncio

from dronecode_sdk import connect as dronecode_sdk_connect

drone = dronecode_sdk_connect(host="127.0.0.1")


async def print_battery():
    async for battery in drone.telemetry.battery():
        print(f"Battery: {battery.remaining_percent}")


async def print_gps_info():
    async for gps_info in drone.telemetry.gps_info():
        print(f"GPS info: {gps_info}")


async def print_in_air():

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If you still want to use dronekit try to write on dronekit forum. O try to run their examples: http://python.dronekit.io/guide/quick_start.html#basic-hello-drone

Luka114 · February 14, 2019, 2:37pm

Ok, I will check out dronecode and see what fits me better. Thank you very much!