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Bar Graphs, Security Systems, and GPS… All with XBee!

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Here are a few more wireless projects you can build with some sensors, Arduino and XBee. Below are project descriptions and links to instructions that will walk you through each step, including example code. Feel free to get creative and put your own spin on these projects!

Wireless Bar Graph Display
Want to monitor the level of light in a room and reflect that data with a shiny LED bar graph? Then check out  this project, which uses an MBed microcontroller, light sensor, LED bar graph, and a pair of XBee radios to get you going on monitoring brightness without even being there. Complete instructions here.

Security Monitor
Let’s build a comprehensive security system! The motion sensor detects when a person passes by and alerts you by displaying a warning on an LCD screen and you can even be alerted with an audio message. For this project, you’ll need an Arduino and XBee radio. After all, Arduino and XBee are best friends in the electrical engineering world! Why else would an XBee shield exist? Complete instructions here.

Device Cloud GPS
Want to track the GPS coordinates of the RC vehicle you’re working on? Well, it’s simple with an XBee gateway, Arduino and Device Cloud. Complete instructions here.

Check out examples.digi.com for more projects. There, you can browse tutorials for beginner, intermediate, and even experienced XBee developers. Once you’re done building, feel free to share them with us on TwitterFacebook, or Google+ using the #XBee hashtag. Happy building!

UPDATE: The Germinator is Alive!

A couple weeks ago, we shared the projects our team in Logroño built for the Digi Employee Hackathon. Here is quick  update on ‘The Germinator Plus’ project. These pictures were taken two weeks after planting and as you can see, the project is in full force!

The Germinator Plus makes it easy to adjust the environment for different species of plants by using Device Cloud, XBee, a microcontroller, and sensors. The sensors monitor heat, light, and water levels and the system maintains the conditions needed for that species of plant. Read more about the project in the full Digi Employee Hackathon post.

Radiator Labs Launches Kickstarter Campaign to Bring Comfort and Control to Steam Heat Users

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Millions of people rely on steam heat. If you’re one of them, you know that your place usually has one of two climates — tropical or Arctic. Admit it, you’ve opened the window in the winter to try to find a balance — we all have. But one company, Radiator Labs, is working to fix this problem forever. Not just for your own home, but large buildings too. How? They’re using a combination of Internet of Things technology and thermodynamics to enable full control.


The team recently launched a Kickstarter to bring this much needed face-lift to steam heat. The solution consists of The Cozy, which is an intelligent cover that is placed over your radiator, and a setup that allows you to set a room temperature via your smartphone. The enclosure collects the heat generated from the radiator and only releases heat as needed. This not only ensures a comfortable temperature in the room, but also uses energy in a more efficient manner.

Radiator Labs-XBee

The project began about two years ago and was off to a quick start as the project won the MIT Clean Energy Prize in 2012. “This changed everything for Radiator Labs. We were able to access more buildings to test and develop the next generation of the Cozy.” says Founder and Creator, Marshall Cox.

Since then, the team has spent time designing the Cozy. Radiator Labs used XBee modules to build large-scale ZigBee Mesh networks and ConnectPort X2e gateways to connect each sensor network to the Internet. Data is gathered and stored in Device Cloud. It’s then sent to an application to set a desired temperature. Data can also be analyzed to monitor each sensor and identify poorly functioning radiators. The team is in the process of deploying a large rollout of the solution in residence halls at NYU and Columbia University.

The Kickstarter campaign will help Radiator Labs bring a WiFi-enabled design to market that will fit nearly any radiator. Funds will also go towards the development of an iOS and Android application that will allow users to control temperatures from their smartphone. So if you like comfortable temperatures and saving energy, support Radiator Labs on Kickstarter.

Getting Started with XBee Wi-Fi Cloud Kit

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The new XBee Wi-Fi Cloud Kit is the fastest way to get your things connected to the internet (#IoTASAP). Even if you have no experience building your own circuits or writing code, you’re now capable of connecting a device and building online dashboards with the XBee Wi-Fi Cloud Kit. And, to make getting started even easier, Rob Faludi, Digi’s chief innovation officer and author of Building Wireless Sensor Networks, has put together examples that walk you through each step of connecting various devices.

The advantages of adding a cloud connection to your projects are endless. You can monitor the performance and troubleshoot problems and create environmental responses that bring a heightened level of interaction to users.

A Few Ideas to Get Started 

Temperature Monitoring 
Temperature monitoring is a great starting point to get familiar with analog sensing. This example uses the TMP36 low-voltage linear sensor that is included in the XBee Wi-Fi Cloud Kit. Once you’ve completed this example, your TMP36 will be generating data points that are viewable in your web browser.

Control an LED
Making an LED illuminate is one of the first things many people do when they start learning electronics. Hence, it can be one of the most satisfying. We’re putting a wireless spin on that achievement by hooking up an LED to an XBee’s output, then controlling it from the web.

Push Button
A button or “momentary switch” is perfect for projects that require user input, or any place you need to detect a change in device state. This example uses a simple tactile switch, however the very same circuit can be used with a pressure mat to detect someone walking into a room, or with a microswitch to monitor when a door opens or with a passive infrared sensor to respond to motion. In this tutorial, we’ll walk you through wiring up a simple button to your XBee Wi-Fi so that its current state can be seen in a online application from anywhere in the world.

These are just a few ideas to get you thinking about what is possible with the new kit. You can find all of these examples and more here, and you can always find more XBee projects in the XBee Gallery.

Interested in getting an XBee Wi-Fi Cloud Kit? Head over here.

Students Innovate with Digi: DALE, A Net Zero Smart Home

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Some of the most creative applications of our products come from students. Every year we are involved with student-led projects that are breaking new ground in industries like automotive, solar power, smart energy, and more. We support these efforts as it leads to insightful feedback on our products and fuels a talented workforce. Here is one of the many projects Digi is helping to support.

DALE (Dynamic Augmented Living Environment) is a net zero, rail-mounted, and dynamic dwelling, designed and built by a student led team from CalTech. DALE brings those living in the dwelling to the outside by opening itself and closing to harness the beautiful weather and reduce energy consumption.

The dwelling is designed to reduce energy consumption through the use of solar power, energy monitoring,  and the ability to reacts to its environment by opening and closing. DALE will be on display while competing in the 2013 Solar Decathalon.

Within the home a wireless network has been established. This is where Digi comes in. Throughout the home there are sensors installed that monitor temperature, humidity, and light. These sensors relay the data collected through a ConnectPort Gateway for cloud storage.

A smart meter is also used to monitor energy consumption of the dwelling. The team chose Device Cloud to collect and store data from the sensors and smart meter, which can be used for further analysis. This data is then used by a custom web application developed by the team.

The application enables control of DALE, so that it can open, close, and make suggestions to its residents on how they can save energy. For instance, if the temperature sensors are reading a hot temperature, DALE can suggest to open the windows or even use the rail system to open up the entire dwelling and let fresh air in.

Similar solutions are becoming more common-place in the industrial setting as well. Companies are using creative solutions to cut back on energy use and to drive other efficiencies. Just one example, OEM Technology Solutions creates products that share data with train operators. With the data, the operator can monitor and control temperature in a train to improve the comfort level of passengers. An application can alert the conductor of optimal times to turn air on and off. The train then uses outside air to cool down rather than an energy demanding air conditioning system. Efficiencies of just 1% can result in billions of dollars saved.

For more information on DALE check out the video below and visit their website at meetdale.com.

Are you student? Are you working with Digi products? Let us know how you are innovating on Twitter, our Facebook Page, or in the comments below. And check out the other student projects we are a part of here.

Sensors and Cloud Connection Enable Self-Sustaining Garden

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You may have heard of the Digi Garden over the last few years as it is always a fun project to share.

Using some sensors, a couple XBees, and a ConnectPort Gateway the garden is self-sustaining. The laborious task of watering is completely eliminated.  The drip watering system is triggered once the soil moisture hits a certain threshold. A garden that is able to monitors itself requires less time to maintain and saves water in the process.

Here is a list of the hardware involved:

  • 3 Decagon Radio Towers containing XBees
  • Water Potential, Soil Moisture, Ambient Light/Temperature/Humidity Sensors
  • Water Pump
  • Drip Watering System
  • ConnectPort Gateway
  • Solar Panel and Battery

Using Device Cloud, data gathered by each of the sensors can be stored and processed. The data can then be transformed into visualizations and used in applications. We also have alarms set within Device Cloud, which allow us to solve issues that arise before any serious harm is done to the garden.

Since its inception, the Digi Garden is something we have looked forward to every summer. We get TONS of vegetables and every year we try to make technological improvements that enhance the garden in some way. Now if only we had a weed-pulling robot!

Below, Andrew will walk you through the garden and show you how it all works.

Digi Enables almerys’ Critical Cardiology Telehealth Application in France (M2M Now Magazine Case Study)

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“We wanted to be up and running quickly and Digi provided us with the rapid development environment we needed. Its solutions were easily integrated into our IT platform. The solution was ready in less than two months, and enabled us to get to the market quickly.” – Robert Boualit, health services director at almerys

Heart failure is the leading cause of emergency hospitalization in patients over 60 years old. For those suffering from heart disease, changes in body weight are a crucial indicator of their health and response to treatment. Remote monitoring for patient weight “warning signs” can avert emergency hospitalization, improves the health of patients and has massive cost-saving implications for health care systems worldwide.

Digi and almerys, a subsidiary of Orange Business Services, have helped develop and implement a cardiology telehealth pilot project in the Auvergne region of France. The Cardiauvergne project, which utilizes Digi’s ConnectPort® X3, Digi TransPort® 41 and Device Cloud by Etherios™, performs in-home monitoring to collect a patient’s weight data daily, and transfers it quickly and securely to a medical co-ordination unit where medical decisions are made.

Since the Cardiauvergne project began in September 2011, 315 patients have been monitored and 600 health crises have been averted. This is just one example of how Digi is improving patient care by connecting critical devices – see our Medical Brochure to learn more about how Digi and Etherios are expanding the mobility and frequency of patient health care.

Webinar: 500 Sensors & Three Days of Data, The Data Sensing Lab at Google I/O

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The webinar “500 Sensors & Three Days of Data: The Data Sensing Lab at Google I/O” discussed the 500 sensor-node network and the data the network collected at Google’s developer conference, Google I/O, as part of The Data Sensing Lab. The sensor data was collected by 500 motes with XBees, 20 ConnectPort Gateways and Device Cloud. The data can be accessed through the Google Cloud Platform. The platforms worked together seamlessly to collect more than 500,000 data points per hour for three days during Google I/O.

The webinar was hosted by three presenters who each played a role in the project:
Rob Faludi, Chief Innovator & Data Sensing Lab team member
Julie Steele, Content Editor & Data Sensing Lab team member
Michael Manoochehri, Developer Programs Engineer at Google

You can see the recording of the webinar below.

Questions? Let us know in the comments section below or on Twitter.

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