Lesson 96: Using noTone() Advanced I/O
Learn how noTone() stops active tone() output cleanly and when to use controlled sound shutdown in advanced I/O behavior.
Lesson Template
Advanced I/O
Explore debouncing, pull-ups, and stable input design.
Lesson Overview
This lesson introduces the core ideas behind Advanced I/O.
- INPUT_PULLUP
- Debouncing
- Reliable signals
Example Code
pinMode(buttonPin, INPUT_PULLUP);
int pressed = digitalRead(buttonPin) == LOW;Lessons in This Section
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Lesson 97: Using tone() Advanced I/O
Learn how tone() starts square-wave buzzer output with frequency and duration control in advanced I/O workflows.
Lesson 98: Using pulseIn()
Learn how pulseIn() measures signal pulse width with timeout control for distance sensors and digital timing analysis.
Lesson 99: Using pulseInLong()
Learn how pulseInLong() handles longer pulse timing with timeout safeguards and compare it with pulseIn().
Lesson 100: Using shiftIn()
Learn how shiftIn() reads serial bit streams from shift registers with selectable bit order and stable clocking.
Lesson 101: Using shiftOut()
Learn how shiftOut() sends serial bit streams to shift registers with controlled latch/clock timing and bit order.