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  • SamuelP32 commented on CalvinL8's instructable USB Arduino Morse Code Key3 years ago
    USB Arduino Morse Code Key

    I made a mistake. There is no built in pulldown resistor. there is only a 20k resistor that can be used to pull it high but I would expect that you would not want to pull high, you want to pull low.

    Why did you use internel pulldown. Why could you not just use a 10k resistor.

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  • SamuelP32 followed CalvinL83 years ago