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The Raspberry Pi 5 is no match for a tini-mini-micro PC
(louwrentius.com)
Hosting your own services. Preferably at home and on low-power or shared hardware.
Also check out:
I'm surprised nobody makes an affordable PCI or maybe even USB GPIO box.
To me, the RasPi served two purposes:
I would add:
I feel you. I have a used Moxa E2210 for IOs. I prefer not to think how much I paid for that.