There were 40,000 PI4s a week produced during Covid, the shortage on the consumer websites was because the entire production was sent to industry users, and there was the barest dribble left over for the hobbyists that made them popular.
Every time there was an increase in production, it all went to shore up backlogs in industrial orders. Why an industry player would use an rPi instead of purpose-built PLCs is beyond me, but that’s what was happening.
The rPi foundation will drop hobbyists like a hot potato when the 5s start being specced for industry and we’ll be back to the same shit. Pretty sure that’s why they didn’t bother with H265 hardware licensing, because no industry player will need that.
TL;dr - They’re going to fuck you, find another source.
I deal with both PIs and PLCs for a living. I don’t have much faith in the future of PLCs to be honest. They just don’t seem to be willing to move forward in any sense of the word. The price for the same hardware tracks inflation, the lead times are getting worse, no version control, no higher level code development, still struggling over basic driver stuff, almost no interoperability, basic things that are wrong aren’t getting fixed, almost no code sharing, everything locked down…
Basically they fit 1994 and decided to just stay there. The only good stuff they offer is greater reliability and more I/O. Right now I can buy an HMI-PI-PLC that can do everything my old systems can do and more for lower cost.
As far as guys I know that do industrial MMI, it’s PLCs all the way down for reliability. They’d desperately like to avoid the Siemens and ABs of the industry, but nobody ever got fired for buying those and they cratered. Which they do, no doubt, but I wouldn’t be trusting much to a hobbyist SBC.
Basically your argument is of the form: IBM is the best and there is no future in the desktop. No one is going to want to have to buy software from multiple vendors. They want the same guys who made the hardware, to make the OS, and to make the software.
You have no idea how frustrating it is to deal with companies like Rockwell and Siemens. From endless tech support licenses, to special cables, to refusing to support any new features, to lockdown down protocols. I can share my python code with anyone, not my compactlogix code. Every single sin of the tech industry you can name these guy implement.
Eventually they will lose. Eventually the PLC will either become like every other embedded dev platform or get replaced by ones that are.
