Buzzer on ESP8266 (NodeMCU Amica)

Posted on Sun 13th, August 2017

• #1

Hansi
Hello,

Does anyone have working examples with passive buzzer?
Because when I try this:
```
analogWrite(A0, 0.5, { freq: 1000 } );
```
I have such message:
```
>Uncaught ReferenceError: "A0" is not defined
 at line 1 col 13
analogWrite(A0, 0.5, { freq: 1000 } );
```
I've also tried digital pins, but no sound in result(and no error).

Could anyone show working example? (https://www.espruino.com/Making+Music doesn't work for me)

Thanks
• #2

MaBe

A0 is the analog input. Use a D pin like NodeMCU.D3, but do not expect to much, because pwm is poor on ESP8266 - check #914

Make sure you not blow it by draining to much current from a Pin, max is 12 mA.
• #3

Hansi in reply to @MaBe

Thanks, it helps) now need some time to pick some normal melody)
• #4

user83259

[SPAM]
• #5

DrAzzy in reply to @user83259

What does that have to do with Espruino? That looks like arduino C.
• #6

Gordon

deleted - looks like spam to me (in the code comments)...

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