tello | A Python interface for the Ryze Tello drone

I am currently working on a project where I send UDP commands to a Tello drone. The problem is that it uses UDP and when I send commands too fast before the previous one hasn't finished yet, the second command/action doesn't take place. I am using RxJS for this project and I want to create a mechanism to wait for the response ("ok" or "error") from the drone.

My Idea is to have 2 different observables. 1 observable that is the input stream from the responses from the drone and one observable of observables that I use as a commandQueue. This commandQueue has simple observables on it with 1 command I want to send. And I only want to send the next command when I received the "ok" message from the other observable. When I get the "ok" I would complete the simple command observable and it would automatically receive the next value on the commandQueue, being the next command.

My code works only when I send an array of commands, but I want to call the function multiple times, so sending them 1 by 1.

The following code is the function in question, testsubject is an observable to send the next command to the drone.

I have developed the following exercise, I must ensure that according to the department it shows me the cities that correspond to it based on the JSON file, so far I have managed to show me the departments in their selected selections, but I have not managed to show me only the cities that corresponds to each department in their respective selects. My code is the following: enter image description here

DATA JSON

I want to receive frames from UDP port and run face recognition algorithms on them with opencv cv::dnn framework. Tello drone is sending frames over UDP protocol.

I have a tello ryze drone, which has got a camera onboard. I am connecting to the drone in order to receive the video over wifi. My system is windows 10 and I am using python 2.7.

I am receiving a h264 bytecode and i use the libh264 decoder from tello in order to get the frames of the video, which i also display in my UI. What i need to do is to save this video as a file on my computer and i have problems with this. I am able to make a snapshot with opencv and save it as an image, this isn't a problem. But making a video isn't working for some reason. I read many posts here like this one but they dont work out for me. I am getting either an error or i get a very small video file, which doesnt open. My Frames are List of List with RGB values like:

Hello i am pretty new in python and i have some problems with the oop. I am used to java where you can easily acces methods from other classes over the object/instance.

I am trying the following thing:

I've tried various Tello SDK/wrapper libraries to control a Tello drone programmatically, but with no success. Currently I am focused on using the simpler C# wrapper:

• TelloSdkCoreNet

I am getting a very straight-forward error, but it seems invalid:

I am a beginner learning to program a drone, called Tello. I have developed codes that allow the drone to take off from the landing pad and fly through a squared path. However, I am facing an issue. The drone doesn't land on the landing pad. It lands a bit forward, like 80 - 100 cm.

Here are the codes of tello.py file:

I am a beginner learning to program a drone, called Tello. I have got these codes online. They are working with the drone.

Here are the codes of tello.py file:

I need to implement a Tello command, which is rc a b c d on a virtual joystick. From different forums, I came to know that for virtual joystick, we need to use rc commands to move the Tello drone. But I don't know how to implement it. In their SDK documentation, they have mentioned it as

a:left/right (-100~100) b: forward/backward (-100~100) c: up/down (-100~100) d: yaw (-100~100)

What do these negative values mean? How can I use the rc command to move the drone?

This is the virtual joystick code which I am using:

JoystickView joystick = (JoystickView) findViewById(R.id.joystickView);