Arduino play many piezo at once

Question

I need to play sound on 10 piezos at once. How to do that without delay() function.

• Fusseldieb: You could use the millis() function of your Arduino...
• Lowder: @Fusseldieb post example please
• Mikael Patel: Use the blink-without-delay pattern arduino.cc/en/Tutorial/BlinkWithoutDelay, a TimeMarker github.com/mikaelpatel/Arduino-Timemark or a Scheduler github.com/mikaelpatel/Arduino-Scheduler

Answer 1

Use the Timer library.

You can attach up to 10 events to each Timer object you declare. That will suit your use case.

• Lowder: Post a code please.
• Lowder: Why this code not work? long ids[10]; void playNote(int pin, unsigned long freq) { int ms = 1000/freq; ids[pin] = t.oscillate(pin, ms / 2, HIGH); } void stopNote(int pin) { t.stop(ids[pin]); }
• Enric Blanco: Post a new question with your full code and not just a snippet, You'll get much better help. I'll also participate.