Yes it was real time and i was using arduino for past one year but it was for 10 sensors , i was using 3 different boards. Now teh sensors have increased
You seem very reluctant to explain the application that the 150 sensor will be used for
Please read teh above details. They are RTDs, temperature sensors, , for chemcials production of different kinds,
How frequently will the 150 sensors need to be read and how long will it take for them to be read, bearing in mind that they cannot all be read at the same time and reading an analogue device takes a finite amount of time
For that many sensors it may make sense to have multiple Arduino boards, each handling a bunch of nearby sensors. I do expect them to be spread out over a large area.
Those are then read by a master board using e.g. RS438. Saves a lot of wiring and other engineering issues (and multiplexers) related to having so many sensors connected to a single board.
By the way, I do wonder what kind of production facility this is that works with flimsy hobby-level components, rather than ruggedised industrial stuff.
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