Valentin Sawadski

Brains, muscles, eyes & ears - A simple way to describe and design a real word sensor/actuator system

While in the process of brainstorming an improved architecture for "regular" sensor/actuator systems it came to me how hard it actually is to come up with a clean scheme for such things.The design quickly becomes something where Information, roles and states of the Devices/Agents get mixed into a complex mess! Which is not surprising since in the end there are many interconnected agents forming a larger system.

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7 Essential requirements for the future protocol of the IoT

Technology to pave the way for the Internet of Things has come a long way. The first frontier, getting an IP-Connection on the device, can be considered as finally crossed. Cheap RF-Modules and powerful Operating systems are widely available now so that the focus has shifted onto the data transport. Lately a heated debate raised the question what protocol is most suitable. However so far I did not come across a list of requirements for the "IoT Protocol". So I gave it some thought and identified 7 essential requirements for data transport of (residential) Internet of Things applications. Please note that I focused on the data transfer assuming there already is a (secure) TCP/UDP connection. So establishing a secure channel was left out on purpose.

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Why your tech-startup should do test driven development

When it comes to starting a company a lot of attention goes to "what value does it generate?" and "what is the business model?" but for those who work in tech it is equally important to focus on "how are we going to build our product?" as this is one of the key problems that the CTO has to tackle. The answer to this could be "Test Driven Development"

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The future of ubiquitous sensors and new ways to write software for it

In recent years new technological advances have started something that is often referred to as the "Internet of Things" or "Ubiquitous Computing". Which in its essence stands for numerous connected devices with little or no human interface that "live" in the physical world. These devices often monitor and control certain aspects of their environment like the climate and energy consumption of a house. Nowadays especially sensing and monitoring is a popular application for such devices. The industry of energy optimization is a remarkable one that shows how much power lies in more data. But also hobbyists have embraced the technology and develop more and more sensors to "quantify" themselves. These people track various things like the amount of steps per day, how many hours they sleep at night and their calorie intake. This already shows that sensor will not only track weather and machines but also (or maybe mostly) humans.

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