Battery voltage read


hi have 2 problems battery voltage indicator


int sensorvalue = analogread(a2);
float voltage = sensorvalue * (5.00 / 1023.00);


1.voltage value incorrect how tweak it?

2.if battery voltage goes down voltage value increase how fix it?



sorry english :d


quote
2.if battery voltage goes down voltage value increase how fix it?
use 1.1 v internal reference.


Arduino Forum > Using Arduino > Project Guidance > Battery voltage read


arduino

Comments

Popular posts from this blog

Valutazione Template - Joomla! Forum - community, help and support

SD Datastring Convention

First use of Arduino Uno : avrdude error on Blink uploading