

That’s exactly what I do. I also have IoT devices that are still trucking along a decade later. I fully expect them to likely do a decade more.
Both Tasmota and ESPhome provide open source firmware for many IoT devices. They throw up a local API interface that other systems can talk to. Providing legacy support is as hard as using HTML put and get commands.
The question is, would the 2nd head be an independent personality, trapped inside the horse, or an extension of the outer horse’s senses?