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They are too expensive and gimicky either way (sh.itjust.works)

submitted 10 months ago by [email protected] to c/[email protected]

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[–] [email protected] 10 points 10 months ago (1 children)

Does an old school washer dryer that runs off timer relays / knobs / push buttons really have a CPU? I ask because that's how mine is and I haven't had to look at the controls but they seem dead simple to me. I get there's different cycles but some simple ladder logic should be able to handle that, no? Half the world runs on simple machines like that.

[–] CADmonkey 3 points 10 months ago

Does an old school washer dryer that runs off timer relays / knobs / push buttons really have a CPU?

Nope, it's just a timer-drive. cam triggering switches. The physical cam IS the CPU.

We have reached a point in time where there are adults who think everything that runs through multiple steps must have a microcontroller, because only really really old machines* do without.

*For the most part. I bought a brand new whirlpool dryer late last year, and it has a mechanical timer in it.