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“This Project is the starting of a big project which control a big process in low cost. I choose raspberry pi and its my first project in pi. I already work with i/o controllers for my official project, and also work with some plc and scada. But here when use raspberry pi we can able to save data in the pi data base and also have GPIO pins for io controllers. But for process we want some isolated Outputs to safe guard the raspberry pi. First i design the circuit in the prototype board and after complete the project i make a sketch and print pcb.”

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