OK, year-old pop culture references aside [Kyle] dropped us a line to show us his tutorial on using interrupts with your Arduino. Given the single core nature of your average Arduino’s AVR you pretty ...

Teaches: Digital output, timing with delay(). Circuit: No external wiring — uses the built-in LED on pin 13. How it works: setup() sets pin 13 as output. loop() drives it HIGH, waits 1 s, drives it ...