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Catrobat is a smartphone based visual programming language and system for every age starting from kids, teens, as well as adults.
Catrobat is a smartphone based visual programming language and system for every age starting from kids, teens, as well as adults.

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Meet us at the Scratch Conference at the MIT tomorrow!
Community manager Matthias will present the latest news on Catrobat and Pocket Code at the Poster Session!

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UPDATE: International multi-language discord chat and voice group server for Pocket Code users

Hey there Pocket Code programmers!

Do you need help with Pocket Code? We would like to introduce you to our new Discord chat and voice server. Discord is a popular "Chat for gamers" app you can download on your mobile phone from Google Play at

Discord allows you to connect with other people and chat and talk with each other and a community. For now, we started a Discord server called “Pocket Code”.

Here you can create, learn, and share. You can make your own tutorials and share them with the community. You can present them in a global video or talk chat. You can also post it in the community thread.

Our hopes for this server is for users like you to come in and check it out. You will be able to talk to other Pocket Code programmers. You can come to get help or even to just hang out with each other. We want the community to be close so go ahead, make some friends, and even do mobile game collaborations.

The main goal here is to give you guys and girls a general understanding to computer programming. So you can thrive and maybe even take the knowledge you gain and turn it into something big. Even the most successful programmers started small, for example Bill Gates. Bill Gates started small and was making cool computer programs like the programs you can make in Pocket Code. He loved it so much he went on to create the legendary operating system as we know it today (“Microsoft Windows”).

And like Bill Gates said “learning how to code will change how you think as a person”. Programming has so many possibilities: not only do you gain a lot of knowledge, programming can give you confidence, better problem solving skills, and allows you to express yourself creatively.

Unlock and release your minds!
Join our Discord @ Pocket Code server =>

Jordan & Wolfgang

PS: Initially the server was English only, but we changed that now, and there are sections for several languages. Let us know if you are interested in other language or area Discord channels. Discord has servers all over the world, and for voice chats, being nearby helps to keep the lag low. The server for Pocket Code is located in "US Center", but there are servers all over the world, so it is easy to set one up for another region as well. But for just text chatting lag does not matter, so this international one is enough.

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Mobile spy-cam and more: Remotely controlled and/or autonomous robot from around the globe!

I just found that with Catrobat's free Pocket Code app and with two Android phones and any robot (e.g., a Lego Mindstorms NXT or EV3 robot, a Phiro robot, the small Rover on the picture below, or other robots on which one can mount a phone that are supported by Pocket Code or can be controlled via Arduino or Raspberry Pi), it is possible to remotely control and/or autonomously drive a robot from anywhere, including video transmission from the robot's phone. To do that, put one of the phones with the Pocket Code app and Quick Support app (from TeamViewer, or any similar app) on top of the robot, and control it through the second phone using the main TeamViewer app. If the Catrobat program running on the phone on the robot has the camera looking towards the driving direction and the camera is turned on (which can be done with a brick from within Pocket Code), the second phone (the one in your hands) will show the video stream from the phone of the robot. And touching the screen of the second phone (in your hands) will have the same effect as touching the screen on the first. At any distance, e.g., one could do that from one side of the world to the other. The Catrobat program running in Pocket Code on the phone of the robot also could drive the robot autonomously, e.g., using the GPS information accessible via Pocket Code, or using the face detection via Pocket Code. Endless possibilities. Mind boggling...

More on Catrobat and Pocket Code: and

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Dear users,
We're currently maintaining our servers. We hope to have this work finished by Wednesday. We're really sorry if you face some issues with our sharing platform or if you can't access our services during that time.
However, we're looking forward to be able to fix the uploading and downloading issues we had the last couple of weeks and to provide you a better experience with our services! :)
If you have any questions please write us - we will let you know as soon as we're back to full service again!
Thanks for your understanding!

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#Catrobat Mentor Simon just met our Google Code-In grand prize winner Jude in San Francisco at the summit! Congratulations again! :)

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Teaching kids at BVM Global School @ Bollineni Hillside Sholinganallur in Chennai, India on how to code on their smartphones using Pocket Code from Catrobat.

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The +Google Open Source blog features today our experience from the last GSoC and GCI :)
Catrobat, a veteran Google Summer of Code org, tried something new last year: they focused students on fixing technical debt rather than developing new features, and they participated in +Google Code-in.

How'd it go? Read their guest post to find out:

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+Google Summer of Code is back and we will be a mentoring organization for the 7th time! =D
We're really happy that +Google Open Source selected us also for #GSoC18 and we're looking forward to an amazing Summer (of Code) with you!


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Kicking off the "Remote Mentor" project, funded by the Austrian Netidee, with Harald Kainz, Rector of Graz University of Technology, and Christa Neuper, Rector of University of Graz.

We're looking forward to this awesome joined project!
Stay tuned to get more information on that later this year!

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+Google Code-in winners have been announced! =>

Thank you all for participating in this great program!
We enjoyed to work together with you and we're still amazed by all your submitted tasks!

You all did a great job and we hope you enjoyed it as much as all our mentors did! :)
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