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Interfacing tatio active high spinner using a Pi Pico
RandyT:
--- Quote from: baritonomarchetto on May 08, 2024, 02:02:28 pm ---Sure, what you said is correct, but using 3.3V at the spinner is worth a try
--- End quote ---
Probably not. The typical IR LED operates at 1.7v (with many operating below this value). The voltage differential between 5v and 3.3v (1.7v), with the resistor intended for 5v operation, is the same as the forward voltage of the LED, essentially nullifying everything which would allow it to function if given only 3.3v.