Category Archive for: ‘Practical Technology’

  • ZigBeeCoAPProxyToCloud1

    CoAP Proxy Server for XBee / ZigBee sensors

    A lot of the equipment used in implementing IoT Wireless Sensor Networks (WSNs) have limited memory, program space, and computing power. These constraints heavily influence the capabilities of the protocols that can be used on these devices. In one of our previous articles we described …

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  • ZigBeeMQTT1

    ZigBee, XBee and MQTT

    802.15.4 is a wireless network communications protocol defined by the Institute of Electrical and Electronics Engineers (IEEE).  It is designed for applications that have low-cost and low-power requirements which take precedence over speed and range.  It is used to implement Wireless Personal Area Networks (WPANs), …

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  • IoTPrototypesUsingArduino2

    Using Arduinos to prototype IoT solutions

    A lot of the information surrounding the use of the popular Arduino single-board microcontroller centers around its adoption by the maker community. What may not be as obvious is how effectively it can be used to prototype sensor devices in the last 100 metres of …

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  • MosquittoRouter

    Connecting the Last 100 Metres to the Cloud using Mosquitto

    A lot of the growth in the domain of the Internet of Things (IoT) is going to come from devices that are connected in the last 100 metres. These devices will cover a wide range of industries, such as transportation, health care, utilities, security, and …

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  • AndroidSecureMQTT1

    Accessing a Secure MQTT Broker with Android

    When building Internet of Things (IoT) applications, Android devices can be excellent providers of data. The Message Queue Telemetry Transport (MQTT) protocol offers an efficient and effective way to transfer this data to another node in your application, such as a cloud server. If sensitive …

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  • SecuringMQTTOnApacheActiveMQ

    Securing MQTT on Apache ActiveMQ

    Introduction One of the technologies often associated with the Internet of Things (IoT) is Message Queue Telemetry Transport (MQTT).  It is a lightweight Machine to Machine (M2M) protocol that runs over TCP/IP and offers a publish-subscribe model for messaging.  Its “light” use of network bandwidth …

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  • Rijware Blog Securing Play

    Using Play Framework’s Action Composition feature to enforce HTTPS access

    Often it is necessary to protect data exchanged between your website and your users’ browsers. Protected data exchange can be required by all or part of your website and can be fulfilled with HTTPS. Part of building in this protection is forcing secure pages to …

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  • Blog2UnderConstruction

    A lightweight approach for updating a live Play Application

    In our previous article () we described how to set up a PlayFramework-based application on an Amazon EC2 Linux instance. Once the application is up and running it is inevitable that the next thing that you will want to do is update it. Unfortunately in …

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  • Play Amazon Blog1

    Running a Play Application on an Amazon Linux EC2 Instance

    At Rijware, we have found that the combination of the Play Framework () and Amazon Web Services provides an efficient and scalable platform to build web applications.  We like Play for its performance characteristics, but as important, for the level of developer productivity it provides. …

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