Arduino Mega Interrupt pins - Programming Questions - Arduino Forum

Hello, I am a bit confused about the pins for interrupting with Arduino Mega 2560 R3 board. I need only one interrupt for my flow sensor. Examples show interrupt 0 and pin 2, so the part of the code would be : byte FM_1_Interrupt = 0; // 0 = digital pin 2 // and in the void setup void setup(){ // The Hall-effect sensor is connected to pin 2, which uses interrupt 0. // Configured to trigger on a FALLING state change (transition from HIGH state to LOW state) attachI

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