Device to Device Communication with Azure IoT Hub We’ve already seen how to get your devices to send data to the cloud. In most cases, the data is then processed by various Azure services. However, in some cases the cloud is nothing more than a means of communication between two devices. Imagine a Raspberry Pi connected to a garage door. Telling the Raspberry Pi to open or close the door from a phone should only require a minimal amount of cloud programming. There is no data processing; the cloud simply relays a message from the phone to the Pi. Or perhaps the Raspberry Pi is connected to a motion sensor and you’d like an alert on your phone when it detects movement. In this blog post, we will experiment with implementing device-to-device communication with as little cloud-side programming as possible. [ more... ]

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