Tone on 2 pins simultaneously

[ec2021]

Hi @v205,

I found an old thread here in the forum:

Any way to program to play multiple tones?

fyi, I got three tones to play on the arduino uno Using the library given by Coding Badly http://code.google.com/p/rogue-code/wiki/ToneLibraryDocumentation #include <Tone.h> Tone tone1; Tone tone2; Tone tone3; void setup() {   tone1.begin(13);   tone2.begin(12);   tone3.begin(11);   tone1.play(NOTE_C4);   tone2.play(NOTE_E4);   tone3.play(NOTE_G4); } void loop() { } Very simple, modified the code they had just to test to see how many tones played and it was three tones. For what I wanted …

and made a demo work on Wokwi:

https://wokwi.com/projects/382583782521458689

It seems to significantly influence millis(), so it's not really useful for applications other than simple sound generation ...