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Reply to "Updated: Build Files For 2-3 Aspect Signal Actuator; Common Anode LEDs; Video Added"

I suspect the CMOS version has outputs that are closer to the rail, which would account for differences in operation.

One good reason for always having a regulator on the power supply is you get more consistent operation.  If you're running a variable voltage input to the circuit, you have an infinite set of possibilities for voltage thresholds.

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