Arduino Uno Vs Nano Vs Mega, Pinout, and technical Specifications
https://www.electroniclinic.com/arduino-uno-vs-nano-vs-mega-pinout-and-technical-specifications/
Jul 25, 2020 · External Interrupts: 2 (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interrupt 3), and 21 (interrupt 2):- These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the attach Interrupt function for details. ... As I explained earlier, Arduino Mega has got ...
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