New Python library - tello-asyncio

[robagar]

Hi all - I've just made the first release of my new library tello-asyncio, using modern asynchronous Python to control the drone.

It's very basic at the moment with just simple control of the drone - take off, fly around and land like this

import asyncio
from tello_asyncio import Tello

async def main():
    drone = Tello()
    try:
        await drone.connect()
        await drone.takeoff()
        await drone.turn_clockwise(360)
        await drone.land()
    finally:
        await drone.disconnect()

asyncio.run(main())

...but things like drone status and video will be coming soon

 

[Drellyanrunner]

This is really cool!

 

[robagar]

tello-asyncio 1.1.0 is up on pypi

Drone state
- listens for and parses UDP state messages (not yet including the mission pad related values)
- access via the read only `state` object attribute, or via shortcuts like `height`, `temperature` etc
- constructor takes an optional `on_state` callback argument for notification of new state
- or use the asynchronous generator `state_stream` for an infinite stream of updates

 

[PythonDroneDeveloper]

Hi all - I've just made the first release of my new library tello-asyncio, using modern asynchronous Python to control the drone.

It's very basic at the moment with just simple control of the drone - take off, fly around and land like this

import asyncio
from tello_asyncio import Tello

async def main():
    drone = Tello()
    try:
        await drone.connect()
        await drone.takeoff()
        await drone.turn_clockwise(360)
        await drone.land()
    finally:
        await drone.disconnect()

asyncio.run(main())

...but things like drone status and video will be coming soon

Love it! Great work! I've been reading the Python Docs related to your code and coding all evening, and it's now 1:01am. I get my Tello EDU in a few days. Have you heard of uvloop? What do you think?

uvloop — uvloop Documentation

 

[robagar]

Glad you like it!

I've not tried uvloop, but it does sound useful. Are there any performance comparisons with the latest python built in asyncio? I think there were some speed optimizations in recent releases so it might have caught up a bit

 

[PythonDroneDeveloper]

I'm going to run timeit() on some of my own comparisons.
Now to back to the code!

Here is a graph showing IO comparisons. LINK: (uvloop protocol)

 

[robagar]

Nice! so still ~2x faster

 

[robagar]

tello-asyncio 1.2.0

Advanced drone control
- flips
- go/curve to relative position
- emergency stop

Video
- start/stop video stream
- video url

Error handling
- handles error command responses from drone

 

[robagar]

tello-asyncio 1.3.0

Complete SDK
- mission pads
- wifi
- remote control

Video
- raw video frame data via callback or async generator

Error handling
- detects command/response mismatch

 

[robagar]

Full documentation is now up on Read the docs

 

[robagar]

tello-asyncio 1.4.0

- Video frame data reassembled properly from UDP packet chunks
- Working video frame decoding example

 

[robagar]

tello-asyncio 1.5.1

- Python 3.6 support (tested in Ubuntu 18.04 on a Jetson Nano)

 

[robagar]

tello-asyncio 1.6.0

- Drone instance passed to state and video callbacks
- Wait for WiFi network (Linux only)

 

[oskarzyg]

Could you work on type hinting parameters/results of functions?

 

[Jet68]

@robagar Thank you for sharing your work.
I would like to use your library with a normal Tello. Would this be possible if the special features of SDK 2 / 3 are not used?