This code makes use of the first (INT0) external interrupt of the Arduino-Uno. This time, an external LED (on PIN7) is used as a demonstration that bit masking is important so as not to accidentally ...
Applies to both Arduino Uno boards (AVR ATmega328) and AVR ATtiny85 chips, however, with a small variation for ATtiny85 with respect to INT0 interrupts. Demonstrates the use of external interrupt INT0 ...