Wednesday Jan 14, 2015

3D Modeling and Printing

Want to create your own 3D model? Michael Hoffer created a Java implementation of BSP based CSG (Constructive Solid Geometry) to create models ready for 3D printing. 

Visit his website and download the open source software from GitHub.  

Wednesday Aug 06, 2014

Check out IoT at JavaOne!

"We are always creating new IoT applications and encouraging others to improve them. Lhings is the networking tool that let us make it very easy. This time we wanted to make something we use in our everyday lives which is traditionally non-technical, as is a table, to be connected to the Internet and then provide new services that could be useful in some applications" explains José Pereda, who is part of the Lhings team. Based in Spain, the team won aJavaOne trip during IoT Developer Challenge.  

"We wanted to show that IoT is useful in real scenarios and it's accessible to anyone. Likewise, we would like to encourage developers to reproduce and improve it!" further explains José. You will get a chance to meet them at JavaOne.  

In the Internet of Things session track at JavaOne, you will learn about Java Embedded and discover great applications. Register today with the Flash Sale code DFS4, you will save US $400   

José is also presenting four talks at JavaOne

  • JavaFX 3D: Advanced Application Development
  • How to Build the Game 2048 with JavaFX and Java 8: Lessons Learned
  • Debugging and Profiling Robots with James Gosling
  • Create the Game 2048 with Java 8 and JavaFX 

Wednesday May 28, 2014

Challenge Ends on Friday!

This is your last chance to win a JavaOne trip. Submit a project video and code for the IoT Developer Challenge by this Friday, May 30.  12 JavaOne trips will be awarded to 3 professional teams and one student team. Members of two student teams will win laptops and certification training vouchers.


Ask your last minute questions on the coaching form or the Challenge forum. They will be answered promptly. Your project video should explain how your project works. Any common video format such as mp4, avi, mov is fine.


Your project must use Java Embedded - whether it is Java SE Embedded or ME Embedded - with the hardware of your choice, including any devices, boards and IoT technology. The project will be judged based on the project implementation, innovation and business usefulness. More details on the IoT Developer Challenge website 


Just for fun! Here is a video of Vinicius Senger giving a tour of his home lab, and showing his boards and gadgets.

Thursday Mar 27, 2014

Create Apps with the Gemalto Concept Board

"The Gemalto concept board has 2G and 3G support, so you can send text messages, place a call, write Java Midlets and Arduino shields support" explains Vinicius Senger.

In this video, he presents step-by-step tutorials on how to configure the Gemalto boards and to create a project controlling LED lights. You can download this project as well as the fan caller demo here. Visit the IoT Developer Challenge website for more training videos. Once you have a working project, submit a video and the code of your project for a chance to win a JavaOne trip! 

In the video below, Vinicius explains how to create a fan caller 


Monday Mar 03, 2014

Compete in the IoT Developer Challenge!


Show the world your embedded Java + Internet of Things (IoT) application for a chance to win a trip to JavaOne 2014! 12 winners will receive a trip to JavaOne 2014, the #1 place to meet world-renowned Java experts. In addition, six students will receive laptops and certification vouchers. Team up and submit the video and code of your project  by May 30, 2014.

Don't know how to start? We are providing eight free online training sessions in March and April. They will introduce you to embedded Java Embedded, IoT, Raspberry Pi and more. Everyone who registers gets a chance to win a Raspberry Pi starter kit.  

Need just a little bit of help? We will provide experts along the way -- regular "office hours." Ask questions on the Challenge forums and check the online resources. There may be some source code and solutions you can use for your project.  

At previous developer challenges, we've had developers:

  • Connect a doorbell to a camera, taking a picture and sending it to a cell phone when someone rings the doorbell.
  • Help blind people figure out which recycling container to use ("put it in the blue can" doesn't help!)
  •  Control a toy monster truck from a phone (Monster Truck As A Service!) 
  •  Connect a heart monitor to Google glass so your doctor or trainer can see your heart rate.

This short video shows them in action: 

Entries will be judged based on their implementation, innovation and usefulness:

  • Quality: a well-implemented project that uses Oracle Java Embedded with computer boards, devices or IoT Technologies
  • Innovation: a new and innovative way of using Java Embedded.
  • Usefulness: a project that meets a business need.

Learn more and register for the IoT Developer Challenge at www.java.net/challenge

Thursday Jan 30, 2014

Internet of Things (IoT) Hackathon in Brazil

SouJava is running a Raspberry Pi and Java hackathon at Campus Party, the week-long technology gathering of geeks, developers, gamers, scientists, and students in Brazil. Sponsored by Oracle Technology Network, the hackathon is designed for enthusiasts who want to create IoT projects with Raspberry Pi and Java. The objectives are for attendees to learn, practice, and innovative while creating an IoT project

Java evangelist Angela Caicedo opened the hackathon with an overview of IoT and Java development. Over two days, participants will build teams, brainstorm, attend training, get a kit from the organizers and hack on their own project. Onsite experts will be available to help participants. They are veteran Java developers of web, enterprise and embedded development. Among them are GlobalCode founder Vinicius Senger, senior developer Rubens Saraiva, SouJava leader Bruno Souza, Java Champion Yara Senger, product manager Bruno Borges and senior mobile developer Ricardo Ogliari 

Learn more about IoT:  
- IoT community page highlighting projects, discussions, hobbyists, and experts

Tuesday Dec 17, 2013

Interview about Leap Motion with Geert Bevin

"The Leap Motion controller is a tiny device that measures the position of your hands in 3D space and it gives you a bunch of information so you can do things with that data." explained ZeroTurnaround Senior Engineer Geert Bevin. He created an application that allows users to make music with their hands; another that maps a series of gestures for keyboard and mouse commands for games. He showcased how to use it to control a computer and a game. 

Tuesday Dec 10, 2013

Internet of Things Interview

Java Evangelist Jim Weaver, Senior Engineer Gerrit Grunwald and Community Manager Yolande Poirier discussed the Internet of Things(IoT), Java Embedded, and the new IoT community page on Java.net. The page gathers blogs, resources and many sample applications from Java developers who create embedded applications with Java. "If we prepare developers correctly to be able to program those devices and put structures in place that monitor and control those devices, then we can have a very productive world of development: one that is powered by Java, that has the underline security and needed APIs, and that leverages Java developer expertise" Jim explained. 

"I use one Raspberry Pi with Open Dophin and many sensors to synchronize data instead of multiple Raspberry Pi's" explained Gerrit Grunwald. "Over the last 10 years, the server side was prepared very well and now it is time for the embedded side to catch up and combine everything in one big Java world" he added 


Monday Nov 25, 2013

Lego, Robots and Java!

In this video, Java Evangelist Angela Caicedo talked about her new Duchess robot built with Lego Mindstorm. "We are moving into the Internet of Things and I am looking for cool devices that we can connect and use Java" said Angela   

The robot is connected to touch and color sensors, has a gyroscope to orient and prevent it from falling, 2 motors for the wheels and another for arms, and an infrared sensor for the remote control. 

Thursday Nov 21, 2013

Coding at Internet of Things (IoT) Hack Fest

Devoxx IoT Hack Fest offered the chance for attendees to code with Java Embedded for multiple devices. Attendees built embedded applications using devices and sensors in just a couple of days. A pre-configured panel, created by Globalcode founder Vinicius Senger, a long-time Java embedded developer and trainer, connects Raspberry Pi, Arduino, Beaglebone black, and Gemalto boards to a series of sensors such as distance, motion, alcohol and temperature sensors, as well as relays and camera. Those components are accessible remotely via a web server and REST calls. A new addition to IoT Hack Fest at Devoxx was the Leap Motion. ZeroTurnaround senior developer Geert Bevin lent nine Leap Motion controllers, gave a training session and was the onsite mentor for the Leap Motion.  

During two days, attendees learned and hacked the panel and the Leap Motion. For example, Hartmut Lang hacked a sensor distance and the blink(1) component with Java Embedded Suite, Jersey API. He turned on a ThingM blink(1) multi-colored USB light via the proximity sensor on the Java Embedded Panel. The proximity data is accessible through a Java sever running on a Raspberry PI with an Arduino bridge. REST calls give access to the current sensor data. This was then translated to Java calls that control the intensity of the blink(1) light. Everything was programmed in Netbeans and was running on a dedicated Raspberry PI.

A number of projects were about controlling the relays using Java SE Embedded, Pi4J and JavaFX. They connected their applications to the panel with the Raspberry Pi's and relays. Others worked with JavaFX and Raspberry Pi. They created a distance measurement using Fuzzy Logic, Arduino, Java Embedded Suite, RXTX, Things API and JavaFX to control lights. Thomas Kriechbaum worked with Java SE Embedded, Apache Camel, MQTT for Android, MQTT with Camel and Mosquito to control actuators and reading sensors. Geert Van Landeghem built an animation framework for LCD displays using Java SE Embedded, Pi4J/I2C and LCDPlate Adafruit

Senior software architect Claude Falguière created an interactive game to teach kids the principle of programmed operations. This is done by leading a robot through a maze. Changing the directions of the robot is done via hand gestures with the leap Motion controller. Each direction change is recorded as a card and shown as the list of operations. These can be manipulated and started again.

An ant-chasing game, written in Scratch used the Leap Motion plugin with a Java application for the gesture-interpreting gateway. Players moved their fingers around in the air and an ant chased its movements. 

Geert Bevin created an application controlling multi-colored led strip with hand gestures. The Leap Motion controller detects hand position in 3D-space and sends the X/Y/Z data straight to the led strip to control the intensity of the red/green/blue lights. The led strip was connected to a Raspberry PI with an Arduino bridge and could be piloted through REST calls running on an embedded Java server. In this video, Geert explains the project.  

More projects online at the IoT Community on Java.net

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