My solution for Paul McWhorter's Arduino R4 Lesson 2 - Use an LED to display Morse Code messages.

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22:53

Arduino Uno R4 Wifi LIÇÃO 3: Piscar um LED com o Arduino

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Everything you (didn't) want to know about using the Arduino R4 LED matrix.And maybe the Uno Q too.

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Diversão com Transistores

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Python tips 4 - ideas of how to speed up your program

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Connecting to a RPi device from anywhere using Raspberry Pi Connect (& creating QR codes in Python)