Sumo4scratch

from Stefan Höhn

Proxy Server Implementation to bridge Jumping Sumo commands within the Scratch-Offline-Editor with the help of the controllers.DroneController-Library (by Tobias Schneider) via Wireless to the Jumping Sumo Drone from Parrot as well as the necessary Scratch-Extensions.

Instructions

Build, distribute and run the Sumo4Scratch server

• Download: You can just download the latest release which is in the release folder of this repository.

• Unpack the zip file, goto \bin-directory and start "sumo4scratch"

• Note: If you get a permission denied on a Mac then make sure it has the right file permissions. A chmods 777 sumo4scratch will help then.

• This will run the server listening on port 9000

To build the server the setup is pretty simple. All you need to have, is at least Java 8 and activator installed

• To build a standalone server you need to have activator installed on your machine (something that any scala developer will have anyway).
• Go to the homedirectory of your project and type activator (it should come up with [ Sumo4Scratch ] in the prompt.)
• Enter "dist" and return. It will then build a zip-file with all required dependencies. It will tell you at the end what the location is where the zip was saved.
• Now you can distribute that zip file to anyone. The system that you run it on should have at least Java 8 installed.

Setup Scratch for Sumo4Scratch

Language of the extension: Two different extension files are provided for German and English.

• Download the file sumo4Scratch.s2e-german or sumo4Scratch.s2e-english from github and save it at a convenient place as you need to open it from Scratch later on.
• You need to have the Scratch-Offline-Editor of Scratch running
• After you have started Scratch, open "File" while holding SHIFT at the same time. This reveals a secret menu entry "Import Experimental Extension". Now you can chose the file sumo4Scratch.s2e-german or sumo4Scratch.s2e-english which will be loaded by scratch.
• Then you can go to the "more block" section of script tab and you will recognize the Jumping Sumo section.
• Drop the blocks into the code and have fun.
• One more thing: of course you need to connect your wireless to the sumo first to be able to connect to it.

Note: In the current Scratch version I am using (445.2), extensions do not really have a complete support for localizations. Scratch seems to save the extension configuration in your program. See more at this description where I explained that localization-behaviour.

Using Sumo for Scratch

The usage of the blocks is straight forward and rather obvious.

• use the Connection Block first, when a scratch program is started. With the block you can define to which drone you like to connect. If you have only one drone, just go for the default.
• There is also a Sumo off with which you can disconnect that can be used. Of course, after that you need use the Connect again
• Now you can
  • Move in any direction (even with providing speed and time)
  • Turn by providing the angle in degrees
  • Jump high and far
  • Show video and take photos (new!)
  • Do some tricks

There is a sample program for Scratch for each language that you can find in the root directory of the project which is called sumo-programm_de.sb2 or sumo-programm_en.sb2 .

Also there is a cool web page that allows to show the video of the drone and to show captured photos which can be accessed via http://localhost:9000/monitor.

This is how it looks like in Scratch:

and here is the German version: