Hi there
I´m trying to make a big mold temperature controller, I´m wondering how is possible PID 96 heaters with an arduino? system is composed by 96 type J tc each input to convert to analog input readable in a HMI, 12 type J input to convert as well for low temperatures, 96 analog outputs to control Solid State Relays controlled by 0 - 10 VDC, also 12 Digital outputs to control valves with a relay, in the HMI have to be a single set temperature point, show real and settled temps, most general need orientation in what to buy, modules, shields or others required to assemble this project, can some body help?
Thanks.
I suggest you look at a commercial unit, it would be reliable and available.
That's major design, i hope that your company pays well!
Using shields is a great way to waste money, btw.
If you are in over your head or trying to DIY cheap... don't unless you like wasting time and money.
No! This is a job for an industrial PC.
For instance: I had a convection oven for flowing solder paste on circuit boards. The oven had much fewer sensors and controls that you propose. The oven was controlled by an industrial PC running Windows NT and the computer ran perfectly from 1994 until about 2015. When I disassembled it, the computer rack/cards, were covered with at least an inch of dust.dirt. lint, etc, but was still running perfectly. I doubt any Arduino thing would be able to compete.
Possible, but surely ill-advised, difficult, and a huge time sink. Better to buy industrial, reliable, robust equipment and stable, well-designed software.
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