Arduino Mega: there are two sets of 20-21 pins (circled.) What's going on there? If I want GPIO, D20 and D21, which set should I use? : r/arduino
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GitHub - MCUdude/MegaCoreX: An Arduino hardware package for ATmega4809, ATmega4808, ATmega3209, ATmega3208, ATmega1609, ATmega1608, ATmega809 and ATmega808
![Arduino Mega: there are two sets of 20-21 pins (circled.) What's going on there? If I want GPIO, D20 and D21, which set should I use? : r/arduino](https://preview.redd.it/arduino-mega-there-are-two-sets-of-20-21-pins-circled-whats-v0-3i3xywxy768c1.jpeg?auto=webp&s=8cfab765cc860eaecd0c1ed82435205b811d5705)
Arduino Mega: there are two sets of 20-21 pins (circled.) What's going on there? If I want GPIO, D20 and D21, which set should I use? : r/arduino
GitHub - MCUdude/MegaCoreX: An Arduino hardware package for ATmega4809, ATmega4808, ATmega3209, ATmega3208, ATmega1609, ATmega1608, ATmega809 and ATmega808
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