ESP8266 Community Forum

Posted: **Mon Jan 26, 2015 5:21 am**

I created a pull request for reading internal vdd33 pin voltage.
return value=mV
example usage and result

print(node.readvdd33())
3348
>
print(node.readvdd33())
2399
> print(node.readvdd33())
2821
> print(node.readvdd33())
3054
> print(node.readvdd33())
3318
>

Posted: **Thu Jan 29, 2015 12:10 pm**

Best function. Many thanks. Now I have free adc for another function. What is limits of value? Can i use Esp8266 around 2,7V from two AA cell and monitor voltage?

Posted: **Thu Jan 29, 2015 12:28 pm**

milikiller wrote:Best function. Many thanks. Now I have free adc for another function. What is limits of value? Can i use Esp8266 around 2,7V from two AA cell and monitor voltage?

you can use.i tried and its working 2.4v between 3.5v. but it seems station mode not supported. its crashing when connected router. you can use stationap mode or disconect ap,meassure and connect ap again.

ESP8266 Community Forum

reading internal vdd33 pin voltage.(pull request #137)

reading internal vdd33 pin voltage.(pull request #137)

Re: reading internal vdd33 pin voltage.(pull request #137)

Re: reading internal vdd33 pin voltage.(pull request #137)