I think BCD rotaries work too. Are there any special requirements, does it need to be BCD or HEX code, there are different ones..? How does one wire a BCD switch? As type1 rotary?
Some of those BCD switches are pretty small and thin, so it makes an appealing choice for gauge knobs that one can just glue/attach on top of the instrument panel that has a TFT behind.
Tuomas
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