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The Fastest Path to Embedded Cellular Connectivity is Digi XBee®

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Digi is excited to bring together the power and flexibility of the Digi XBee® ecosystem with Verizon, the world’s largest cellular network. Digi XBee® Cellular makes connecting your product easier by smoothing out the hardware, certifications, and development tools to configure and maintain your connected device.

Additional benefits of this pre-certified end device that is saving OEMs months of time and thousands of dollars:

  • xbee-cellular-200pxThe smallest footprint available (24mm x 33mm.)
  • Based on the 20-pin Digi XBee® footprint we all know and trust.
  • The best development tools to deploy and manage your network (XCTU, API, libraries.)
  • A bundled data plan will be available as an option, with the module “shipping hot,” fully pre-provisioned and ready to communicate over the cellular network right out of the box.

Digi XBee® Cellular will initially be available on the Verizon LTE Cat 1 network, followed by additional carrier support and new lower-power IoT Cellular standards such as LTE Cat M1 and LTE Cat NB1. Whatever the protocol, Digi XBee® Cellular will have a pin-compatible module so your design is ready for tomorrow. Samples are available now for development!

Click here for preliminary specs and to sign up for Digi XBee® Cellular updates. Or, give us a call at 877-912-3444 to learn more.

What Makes Thread a Secure Wireless Protocol?

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With XBee Thread soon arriving, we’re fielding a lot of questions regarding the protocol’s touted security benefits. Not only does Thread provide a robust network with no single point of failure, but it also offers businesses and developers extremely secure wireless communication. Let’s look at a couple reasons why.Web

IP-based Security Protocols
Yes, it’s a low-powered network, not unlike ZigBee and other 802.15.4 radios, but it’s also IP-based. This is important because with an IP-based networking protocol, developers can tap into security protocols used when you’re browsing the internet. Some of the common ones are DTLS, TLS and SSL. These IP-based security protocols provide the network with secure end-to-end communication.

Commissioning
Another benefit of the Thread protocol is the commissioning process. Commissioning is the process of joining a new node to the Thread network. Previously, this could lead to network vulnerabilities and be overly complex. But, the creators of Thread have made it a straightforward and user-friendly experience by leveraging mobile technology and passphrases. This ensures no rogue nodes are able to join the network without being overly complex.

There are three ways to add a node to a Thread network, out-of-band commissioning, discovery, and through a commissioning application on a mobile device.

Out-of-band commissioning mode configures a node with the network credentials of the desired network. This makes the node behave like a partition of the network.  When it comes in range of the network, it will be like two partitions joining into a larger network creating a secure handoff.

When commissioning via discovery mode, the node searches for a network with matching credentials. For this, the security is simple, the network must be in range of the the node, the network must allow joining, and the node must be told to expect a node to be joining, identified by its EUI 64, or unique IPv6 MAC address.

Lastly, Thread introduces a third method, and arguably the easiest new way to commission a device, through a commissioning application installed on a device such as a smartphone, tablet, or laptop.  Thread describes this process as petitioning and joining.

Petitioning is the process of authenticating and authorizing the commissioning device (like your phone or laptop), which will run the Thread commissioning app. The device can then communicate with the Thread network either locally or via the internet through the network’s Border Router. This forms a secure TLS connection between the network’s Border Router and the user’s commissioning device.

So now that we’ve got our commissioning device authorized, how do we add a new node to the network? It’s pretty easy.

When a node wants to join the network it will send a request to the commissioning device where the user will be prompted to enter a key to authorize the node(s) to join the network. Once the key is entered, there is a secure DTLS handshake between the joining node and the Commissioner. The new node receives the network parameters and is all ready to function with the necessary rights and privileges.

This is just a brief look at why many IoT experts consider Thread a more secure wireless protocol based on its security features and commissioning process. Check out these resources to learn more about the Thread wireless protocol:

And, if you have any Thread-related questions send us a tweet at @digidotcom or @XBeeWireless. You can also visit the official Thread website for more information.

Digi XBee® S2C 802.15.4 – Let Your Imagination Run Wireless!

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Digi XBee® is the world’s #1 RF module because our common footprint is shared across protocols and frequencies. Anything is possible with Digi XBee – from the small science project in the lab to NASA monitoring payloads on a rocket, Digi XBee gives you the tools and flexibility you need to rapidly innovate. The latest example in this broad line of modules is the Digi XBee S2C 802.15.4 which is now available with the Silicon Labs Ember® EM35x transceiver.

This latest module is ideal for applications requiring low latency and predictable communication timing. The Digi XBee S2C 802.15.4 is also ideal when your application requires robust multipoint wireless connectivity with reduced power consumption, support for the over-the-air firmware updates, and an upgrade path to DigiMesh® or ZigBee® Mesh protocols.

New Digi XBee S2C 802.15.4 Offered in Through-Hole & SMT Form Factors

Anyone deploying Digi XBee can swap one Digi XBee for another. You don’t have to design a printed circuit board to take advantage of Silicon Labs’ latest chip – Digi has done it for you on the Digi XBee platform saving you time and giving you the confidence to get connected quickly and easily. Providing quick, robust communication in point-to-point, peer-to-peer, and multipoint/star configurations, Digi XBee S2C 802.15.4 products enable robust end-point connectivity with ease. Whether deployed as a pure cable replacement for simple serial communication, or as part of a more complex hub-and-spoke network of sensors, Digi XBee 802.15.4 modules maximize performance and ease of development.

Digi XBee is a special product because of our customers: the innovators, the hackers, the problem-solvers — whatever you call yourself, Digi is dedicated to providing you with everything you need to quickly create wireless connectivity solutions. Let your imagination run wireless!

Click here for a “Digi XBee 802.15.4 Protocol Comparison” Technical Brief>>

Smart City Series: 4G LTE & Smart Infrastructure – Q&A Follow-Up

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If your inbox is anything like ours, it’s full of emails touting “Smart Cities” as the next big thing, but how are cities actually using cellular technology to run smarter?

In a recent webinar, Digi’s Cellular Product Manager, Andrew Lund, shared real-world examples of 3G/4G LTE in infrastructure applications, along with the challenges and questions that need to be answered to get there.

smart cities

Below, Andrew covers questions from the Q&A that we didn’t have time to answer live. If you’d like to watch the webinar recording and learn more about how Digi enables Smart Cities.

Miss the webinar? Here’s where you and watch the webinar recording and learn more about how Digi enables Smart Cities >>

What accelerated lifecycle testing have you performed on the Digi TransPort® WR31 and are you able to share your results?
Specific test results are shared on a business case basis and only under NDA, but we can share that the WR31 was subjected to a Highly Accelerated Life Test (HALT) in line with our standard testing.  This testing is divided into three sections: temperature, vibration and a combination of vibration and temperature.

In each section, the Unit Under Test (UUT) is tested at the operational limit, the functional limit, and the destructive limit (if applicable). For the WR31, the functional limit was above the operating limit, meaning it functioned above and beyond the threshold we expected it to.

Who does the integration with energy meters / HVAC controllers ? Does Digi do that type of integration or is it some system integrators who are Digi partners who are responsible for integration?
Both options are available, depending on the customer and the goals. In cases where, for example, an OEM wants to add cellular connectivity to their offer, Digi and its partner would work directly with the OEM. In cases where the customer is an end user, for example an city or state department, Digi would work with a system integrator or value added reseller to deliver the final solution.

Can you please share how the Garbage Collection and Emailing System was implemented?
This was done by Digi’s Wireless Design Services group. More details and a video can be found here.

Does the WR31 product have the relevant Australian compliance e.g. C-Tick, A-Tick?
Yes.

Are there plans to support LTE 700 Mhz Band 28 in future?
Yes—stay tuned for details.

Rather than offer a device management application for us to use, does Digi offer a managed service for its product set?
Digi has implemented bespoke managed services programs for customers, but it is more common for us to partner with 3rd party managed services companies.

Does the WR31 support DNP3/IP?
Yes, the Digi TransPort WR line supports DNP3.

Does the WR31 has an LTE to NextG fallback?
Yes, the WR31 offers LTE with fallback to Telstra’s NextG (i.e. 850 MHz) network.

Do you have an example of an application in France?
We have many, many customer and applications in France—please contact your Digi rep or Digi partner for details.

WR31 is a nice product, but how to beat the competition having this form factor in the market for many years. E.g. Welotec, Moxa, etc.
“How to beat…” questions are a bit tough to answer in the abstract, but you can discuss specifics with your Digi rep or partner. Nor now, let’s focus on positioning the WR31 where it will have clear advantages. The WR31 is the best fit in applications that DO NEED: LTE, strong price/performance (i.e. affordable), Modbus/DNP3 bridging, and advanced security and routing (VPN, authentication, encryption, etc, and DON’T NEED vendor-specific object libraries or Modbus/DNP3 translation.

Is there a version that supports XBee® 868 LP?
No, currently there are no versions of the WR31 with an XBee radio, although that is an interesting concept, and worth discussing further with your Digi rep or partner.

Is it possible for the hardware to move from Cellular communications to a WiFi network and use this to communicate, WiFi becomes available – and if so – what product fits best?
The Digi TransPort WR44 supports Wi-Fi and 4G/4G LTE comms and is used in this kind of least cost routing scenario.

What is different in terms of speed in WR21 and WR31?
The WR21 and WR31 share the same WWAN radio and processor architecture—there is no material performance difference between the two.

Fog Computing in the Internet of Things (IoT)

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The Open Fog Consortium defines Fog Computing this way: “A system-level horizontal architecture that distributes resources and services of computing, storage, control and networking anywhere along the continuum from Cloud to Things.” In his recent Fog Computing report, Aapo Markkanen at Machina Research puts Digi in this category. He says, “Digi is well placed to a make a play in fog computing, given its strong communications portfolio and additional capabilities [such as] Device Cloud and device management.” We couldn’t agree more!

Intelligence on the edge of the network allows our customers to store, shape and translate machine and sensor data to maximize connections from the device to the cloud. Digi Device Cloud enables our customers to bring enterprise routing features to the edge of their networks enhancing security, storage, and redundancy.

The concept of Fog Computing accurately describes the way our customers are managing mission critical applications across multiple wireless protocols making it easier to configure, deploy and manage devices on the edge of their networks.

Click here to learn more about Digi Device Cloud >>

Which Mesh Technology is Right for You? – Q&A Follow-Up

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Are there tutorials available for XCTU, or user manuals?xbee-zigbee (2)
Yes, there is a complete help system built into the XCTU interface. Visit the Digi YouTube page for video-based tutorials.

Can you program DigiMesh with legacy XCTU?
We recommend customers use the new and improved XCTU. Legacy XCTU may still work with some products, but it is no longer supported or updated for new releases.

Can I use the new XCTU on older versions of Xtend RF Radios?
Yes, but certain features of XCTU may not work with older versions of XTend radios.

Does hardcoding PAN ID and Channel as used in DigiMesh modules have any disadvantage?
Hardcoding the PAN ID does not have any significant disadvantage, but note that some products require the use of multiple channels, but the channel range can be selected and configured as desired.

Digimesh networks are configured by setting the Pan ID and operating channel. This method lends itself to very simple network formation as no association mechanism is involved. Zigbee uses an association process where routers and end devices receive the operating PAN ID and channel upon joining the network. One advantage of this system is that joining can be disabled.

For a network of 400 nodes, with up and down communication, which is preferable, ZigBee or DigiMesh?
Both mesh protocols can work for this network if configured appropriately. DigiMesh is slightly easier to architect simply because there is no need to select different node types.

Can we use your gateway and connect it to our cloud?
Yes, this is an option for most XBee modules.

Can out-of-the-box configuration items be modified via a broadcast or unicast in both ZigBee and DigiMesh?
Yes, ZigBee and DigiMesh nodes can be configured over-the-air.

What’s the range of these 900HP DigiMesh Kit modules?
Range for the XBee-PRO 900HP is up to 9 miles with high-gain antenna. This can be increased by adding additional hops to the network.

We are planning to use ZigBee Mesh network to collect the data from battery powered movable sensors. The sensors will be distributed in two physically apart buildings where there are no wireless connection from one building to another building. Could you please let me know the best way to setup the network, considering moveable sensors will move from one building to another building and should join the network as soon as they enter the range of ZigBee network in another building.
With ZigBee you would need to have some mechanism to instruct the module to leave the current network and attempt to join the other. This could be accomplished with a network watchdog timer that checks for the presence of a coordinator and if none is found will reset and join another network. XBee Zigbee radios also have a feature called join verification that can be set to check for the presence of a coordinator on a power reset and reset its network settings if none is found. Digimesh could accomplish this by setting both networks with the same PAN ID and Channel credentials, then moving from one network to the other would be seemless.

Any DigiMesh Kits including Raspberry pi projects?
We don’t have any Raspberry Pi projects in our current kits. However, there are plenty of RPi project examples on the web.

What comes in the kits that are on the screen?
ZigBee Mesh Kit:

  • 3 – XBee Grove Development Boards
  • 3 – XBee ZigBee Modules w/ PCB antenna
  • 3 – Micro USB cables
  • 2 – XBee stickers

900HP DigiMesh Kit:

  • 3 XBee Grove Development Boards
  • 3 XBee-PRO 900HP Modules for US/Canada
  • 3 Micro-USB Cables
  • 2 XBee Stickers

Do these modules require a Digi concentrator and/or cloud or are they compatible with 3rd party systems?
Digi Gateways can be used with our ZigBee and 900HP DigiMesh modules to connect them to cloud-based applications. ZigBee modules can also be used with 3rd party gateways, but there could be some compatibility issues depending on the implementation of the ZigBee protocol on the 3rd party gateway. Customers that need a gateway to connect their devices to an IP-based system are suggested to use Digi gateways.

When addressing a ZigBee node, is it required to use both the 64-bit address AND the 16-bit ID address?
Frames may be addressed using either the extended(64 bit) or the network address (16 bit). If the extended address form is used, then the network address field should be set to 0xFFFE (unknown). If the network address form is used, then the extended address field should be set to 0xFFFFFFFFFFFFFFFF (unknown). If an invalid 16-bit address is used as a destination address, and the 64-bit address is unknown (0xFFFFFFFFFFFFFFFF), the modem status message will show a delivery status code of 0x21 (network ack failure) and a discovery status of 0x00 (no discovery overhead).

If a non-existent 64-bit address is used as a destination address, and the 16-bit address is unknown (0xFFFE), address discovery will be attempted and the modem status message will show a delivery status code of 0x24 (address not found) and a discovery status code of 0x01 (address discovery was attempted).

What relative humidity or IP rating can the “raw” PCAs operate in?
0-95% humidity

Do you have any office in India which can support us in developing the application, across the table or over the phone?
Digi no longer has an office in India, but support is available through our US offices.

Is there a DigiMesh kit available for Europe (868 or 2.4)?
There is not currently a DigiMesh kit available for 868LP or DigiMesh 2.4 modules.

Does DigiMesh come with a cellular and or satellite gateway?
Yes, available in the ConnectPort X4 and X4H.

Is there a notion of sustained broadcast rate that can be claimed? Like 9600 baud, 19200, etc. What is expected of transmitting node, in terms of backing off?
Each node that transmits the broadcast will also create an entry in a local broadcast transmission table. This entry is used to keep track of each received broadcast packet to ensure the packets are not endlessly transmitted. Each entry persists for 8 seconds. The broadcast transmission table holds 8 entries. This process creates an approximate once per second maximum sustained broadcast rate. System generated broadcast events can also occur so careful testing should be performed to estimate any network’s specific throughput capabilities.

Can XCTU be used remotely?
XCTU can be used to configure locally connected nodes and ‘remote’ nodes connected to your network over-the-air.

What’s the difference between the 900HP modem and the Xtend modem?
They are similar in terms of performance and functionality. The 900HP modem is less expensive, and slightly lower range than the XTend.

Which antenna are recommended to maximize transmission across water?
High-gain directional or omni antennas provide strong performance across water and land. Note that over both water and land, the higher the antenna, the more likely you are to achieve unimpeded line-of-sight range.

What do you mean by complex deployment?
Large mesh networks are considered complex deployments. ZigBee networks can be slightly more complex than DigiMesh, simply because the node types need to be defined for every node on the network and there must be a powered coordinator defined for the network to operate properly.

ZigBee nodes: What if a coordinator stops working?
The coordinator can be a point of failure for a ZigBee network.

Can ZigBee module work like mesh?
Yes, ZigBee modules operate in mesh networks.

DigiMesh why no 433MHz?
Not a strong market opportunity to drive the creation of this product. If you have customers interested in this technology, please let the Product Management team know.

How do the modules differentiate between the line-of-site and a reflected packet?
Multipath signals can create destructive interference when they arrive out of phase with a direct signal at the receiving antenna. This generally results in fading or weakening of the received signal.

Is there a limit on the size of data that can be transmitted? Or a good practice / recommendation to deal with larger datasets?
If using API mode, there is a maximum payload size that can be included with each API frame. This size will vary with different versions of XBee module but can always be queried with the NP command.

With unicast will each node of a network repeat packets or does the mesh network only repeat packets on nodes that it knows are on the path to the final node?
Only modules involved in the routing of the data will retransmit the packet.

Which module you recommend for smart street lighting , and how is the communication traffic managed? Can every lamp on the network talk to each other?
We have intelligent street lighting customers using ZigBee and DigiMesh technology. In both network types, every lamp on the network can communicate with one another. Each technology has pros and cons, it comes down to customer preference.

Two part question:What is the advantage of directed broadcasting (i.e., defining a destination address)? Does this improve communication speeds of data to the ‘host’?
Directed broadcasting does not improve the communication speed of data to the host but it does simplify addressing as it allows you to address data to a specific module. Otherwise you would need an identifier in the payload of your broadcast packet to inform the desired module to reply. It also limits the amount of extraneous data that will be presented to host applications.

My question is why South America (Argentina) is not listed in market for 900HP Digimesh?
900HP DigiMesh modules can be used in Argentina, there are no specific certification requirements for that region.

I already got the zig bee mesh kit a couple weeks ago… I have an xbee shield for arduino, do I need anything else to get started?
Nope, you are ready to go build your own XBee-enabled prototype!

Is there any possibility to compress/decompress data before/aftrer zb/digimesh transmission?
The XBee radios are serial radios. Any binary data can be transmitted via an XBee Radio. A JPEG image is a good example of a compressed file that could be transmitted via an XBee.

Would you briefly compare these to the Wireless HART and ISA100 devices/standards?
WirelessHART and Zigbee share IEEE 802.15.4 as the basis of their physical layers. This allows them to use essentially the same hardware at about the same cost for transmitting and receiving. WirelessHART uses TDMA, which allots individual time slots for each transmission. ZigBee uses CSMA with collision detection. In WirelessHART, each node operates as a router, which is similar to that of DigiMesh.

Can I code the modules or must I use an external processor?
Digi does offer ‘programmable’ variants of both ZigBee and DigiMesh modules, which includes an 8-bit microprocessor onboard the module that can be programmed with a custom application. In most cases, customers use their own external microprocessor with our standard XBee modules.

Starbucks and Other Retail Outlets Offer Wireless Phone Charging with Digi Technology

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As everyday life becomes more and more dependent on smartphone usage, always ensuring that your battery is charged has become a necessity. Powermat provides wireless charging stations that offer convenience and security. Instead of crowding the lone wall with an outlet at Starbucks or always bringing your charger with you, Powermat provides an easy alternative. Powermat’s App even warns users when their battery is low and notifies them of the nearest charging station.

Powermat needed a technology partner with wireless expertise that could help them to connect thousands of networks distributed around the world and enable to administer them across their global network. Additionally, Powermat needed to integrate all that data into the end-user application. They sought a simple solution which would provide a secure connection to the cloud and data integration for partner businesses to connect with customers through the app.

Powermat-Content-Calendar-wo-October-19_East-Coast-Facebook-(1)

Each wireless charging station is embedded in tabletops and connected on-site with ZigBee Technology. The ZigBee technology makes the network simple and easy to deploy. It enables integration of data which allows users to find charging stations and enables businesses to offer targeted ads via the Powermat App.

ZigBee offers cost-effective local wireless communication on a massive scale. To enable the global network Digi created a custom SKU of the XBee Gateway. The new variant ships with the Powermat logo, additional security features, and Powermat’s custom Python application. Powermat is now the fastest growing wireless charging network in the world. They’re featured in many businesses such as Starbucks, McDonald’s, Dupont, and General Motors. And they can be found in cities across the globe such as London, New York, and San Francisco.

Read the full story on how Powermat powers phones around the globe with Digi here >>

The Future of Mesh Networking: XBee Thread Demonstration

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Digi is hard at work developing the next-generation XBee module based on the Silicon Labs EM3587 chip, which will support the new IoT protocol, Thread. Due to Thread’s unique advantages like easy commissioning and robust mesh capabilities, the new module will be a valuable addition to the XBee ecosystem. With that in mind, we thought you might want to get a behind-the-scenes look at what we’re doing with this new technology.

Our development team out in Lindon, Utah created this informative demonstration showing a network comprised of both Thread and ZigBee devices and how they can all be controlled via a mobile application.

This is just step one in our development process so stay tuned for updates. Check out these resources to learn more about Thread:

And, if you have any Thread-related questions shoot as a tweet at @digidotcom or @XBeeWireless. You can also visit the official Thread website for more information.

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