If you are looking for the Chapter 13 content for the 1st Edition of Exploring Arduino, please click here.

Interrupts and Other Special Functions

Parts List

• Arduino Uno or Adafruit METRO 328
• USB cable (Type A to B for Uno, Type A to Micro-B for METRO)
• Half-size or full-size breadboard
• Assorted jumper wires
• Pushbutton
• 100Ω resistor
• 220Ω resistors (×3)
• 10kΩ resistor
• 5mm Common-anode RGB LED
• 10μF 50V electrolytic capacitor
• Piezo buzzer
• 74AHCT14 hex inverting Schmitt trigger

Code

Download Code (2nd Edition, Chapter 13)
(Also available on GitHub)

Useful Links

• Arduino attachInterrupt() Function Reference
• Arduino “volatile” Variable Qualifier Reference
• Arduino TimerOne Library Reference
• 74AHCT14 Datasheet (PDF)

Videos

Watch a demo video of the “Debounced Hardware Interrupts” project from this chapter:

Watch a demo video of the “Interrupt-Driven Sound Machine” project from this chapter: