I'm always suspicious of circuits that show outputs directly driving LEDs with no current limiting.
That's usually a good indication that there's gonna be something else wrong/suspect.
I'm always suspicious of circuits that show outputs directly driving LEDs with no current limiting.
That's usually a good indication that there's gonna be something else wrong/suspect.
I'm always suspicious of circuits that show outputs directly driving LEDs with no current limiting.
That's usually a good indication that there's gonna be something else wrong/suspect.
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Nothing from Engineer's Garage has impressed me yet. But you could run CMOS & Blue, green White LEDs using a 3.3V supply with low current from internal resistance. If the video used 5V, then he is relying on the internal resistance of high-voltage CMOS (4000 series) which is OK for a few LEDs.