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How to Send Value Between Processes Using Signal

Developed By: Ajish Alfred Linux operating systems especially Ubuntu is preferred for all kind of programming and development. In a multi-tasking environment of the Operating System several processes executes at the same time and the Signals provide an Inter-Process Communication (IPC) method. The Operating System sends signals to the process to notify them about the …

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How to build a RaspberryPi Cluster

RaspberryPi was invented as educational device to inspire children to study computer science. Nevertheless, in a couple of years it has become the toy of computer scientists, engineers and curious of every age. This project is our successful attempt to build an educational RaspberryPi Cluster composed by one main node and eight computational nodes. In this post …

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How to build a People Counter with Raspberry Pi and Ubidots

In this simple project we’ll use a motion sensor to detect if an object is passing in front of our Raspberry Pi. Then we’ll count how many times that happens, and send this value to Ubidots. People counters are typically expensive devices used in the retail industry to understand how shoppers behave. Thanks to Raspberry …

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