I don't know, but I'm willing to speculate that an OEM solution would be embedded in a larger system;leaving you the option of an Arduino or Raspberry Pico controller board. And some fairly simple programming.
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I've thought about it some more, and the single-board computers I suggested are really overkill. Minimum would be the
BASIC Stamp:
Quote:
BASIC Stamp
The BASIC Stamp is a microcontroller with a small, specialized BASIC interpreter built into ROM. It is made by Parallax, Inc. and has been popular with electronics hobbyists since the early 1990s.
More at Wikipedia
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Even I could program in BASIC; set a GOTO loop,add in a timing delay and a few halting conditions and you're done.