Monday May 18, 2015

Oracle Java 8 ME Embedded + Raspberry Pi + Sensors = IoT World

In Part 1 of his series on using Java ME 8 to control Internet of Things (IOT) devices--such as LEDs, relays, LCDs, sensors, motors, and switches--connected to a Raspberry Pi, Jose Cruz explained how to work with devices that use a simple general-purpose input/output (GPIO) interface. GPIO devices can be used as either a digital input or digital output, can be disabled or enabled, and can be used to drive interrupt lines. Part 1 explored how to connect and control a flame sensor, a movement sensor, and a motion sensor.

In Part 2 of his series, Jose describes how to connect and control devices that use an inter-integrated circuit bus (I2C) interface, which is a multimaster, multislave, single-ended serial computer bus that  enables you to read or write data beyond just changes in logic states.  

Following Jose's instructions, you'll learn how connect a servo driver; a temperature and humidity sensor; a light and object proximity sensor; and a digital compass to the Raspberry Pi. Then, you'll see how to develop Java ME 8 classes that allow you to gather data from, write data to, and control these devices. The code for the classes is very similar, so once you understand it, you'll be able to create new classes that control additional I2C devices to create your very own IoT world. 

Thursday May 15, 2014

Win a Trip to JavaOne!

There are two weeks left to enter the IoT Developer Challenge! This is your chance to win one of 12 JavaOne trips. Submit a project video and the code of an Java Embedded application using any boards, devices, IoT technology like sensors, lights, camera, and more. The final deadline is May 30.

Here's how to enter
  1. Create a well-implemented, innovative and useful application using Java Embedded with devices, boards or other IoT technologies.
  2. Make a video presenting your project.
  3. Fill out the Submission Form with links to your video and code. 
The projects will be judged based on quality of implementation, innovation and usefulness
  • Quality: a well-implemented project with working code and 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
Prizes will be awarded in two categories: professional and student. They include paid team trips to JavaOne 2014 for a 
Professional category – 3 winning teams 
  •  A winning team receives prizes for up to 3 members
  •  Prize: JavaOne pass + up to $2,000USD for flight and hotel  (Hilton – SF)
Student category – 3 winning teams  prizes sponsored by Oracle Academy 
  •  1st prize: JavaOne pass + up to $2,000 USD for flight and hotel 
  •  2nd & 3rd prize: A laptop and a certification voucher 
Key Dates: 
  • Submission deadline is May 30, 2014
  • Winners announced June 30, 2014
  • JavaOne, San Francisco 2014 from Sept. 28 to Oct. 2, 2014
For more details, visit www.java.net/challenge

Thursday May 08, 2014

Getting Started With Raspberry Pi

Globalcode Founder Vinicius Senger will demonstrate how to build a simple application using a Raspberry Pi. This hangout session will be at 8:00 am in Sao Paulo, Brazil; 6pm in Jakarta, Indonesia; 11:00am GMT; 4:30pm in Chennai, India; 8:00pm in Tokyo Japan; 3:00pm in Moscow, Russia 

The Challenge deadline is coming up fast! To enter the IoT Developer Challenge, submit a video and the code of a project by May 30. The requirement is to use Java Embedded with boards, devices or IoT technologies. 

Don't miss this chance to win a trip to JavaOne 2014 for you and 2 members of your team. Three teams will win! This is great opportunity for folks to gain exposure and recognition.

Free tutorials, code samples, coaching and forums support are available on the Challenge website to help you. To receive reminders and news, subscribe to the news on the Challenge homepage.

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. 

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