Hi guys,
I just got my AttoPilot Voltage and Current sensor (50V 90A) and soldered two XT60 connectors and some wiring on it.
However the output from the voltage lead is a but high.
I've got my battery (Lipo 3S, 12.60V) connected but the following program returns 13.14V-13.26V.
Any suggestions?
VRaw = analogRead(A0);
VFinal = VRaw/12.99;
Serial.print(VFinal);
Serial.println(" Volts");
delay(20);
Best regards Michael
Replies
Where does the 12.99 figure come from?
Have you accounted for the actual reference voltage on the A/D? The default assumes 5.0 V but if it's lower, you'll get a higher reading.