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May 6, 2014 - 18 went

IoT and M2M

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Added by Harald N.
on May 10, 2014.


  • Harald N.

    The picture shows a proposal for a home automation system on the new specification of Bluetooth 4.1. BT 4.1 describes a hub on Bluetooth Low Energy. A Bluetooth Low Energy device could be a master and slave in same time. Master and slave is already the wrong word. At BLE this is called central and peripheral. At BT 2.1 we had something called scatternet. In year 2008 the was some experiments with large scatternets can at ETH Zurich in the BTnode project The scatternet will get a recall for sure. Any smart watch or bike computer at bicycle will communicate to e.g. a heart rate belt, a sensor at the pedal and a sensor for the speed. In professional sport they have sensors for the tire pressure as well. All sensors will run in peripheral mode and the smart watch or bike computer will run central mode. If the recorded data has to be forwarded to a computer or a smartphone, then these devices will run in central mode. That means that the watch or bike computer has to run in slave mode. The smart watch or the bike computer has to be able to support both. In a scatternet we have the same situation. In scatternet we will find multi masters and we are able to create networks in network topology in a tree. Apply for free BLE board here: If you have a commercial project then you have the freedom to ask for an evaluation kit free of charge. The main information to tell is your application and your forecast. Worst case it will be rejected. If you get a rejection or no answer then just email to harald.naumann (at) . I will see, what I can do for you. Even if you have no chance for a free board, then the evaluation kits are not too expensive. If you got your evaluation kit by Future Electronics (free sample or bought kit) then I will put on top: • Free source code in C the MCU • Free source code iOS/Android • Free antenna layouts • Free consulting for PCB layout • Free trainings about BLE und 6LoWPAN (24 – 26 June in Dortmund, Hofheim, Stuttgart plus Sept 2014 in Vienna and Zurich)

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