====== Mesureur de courant ACS712 ======
{{ :documentation:microcontroleurs:arduino:modules:amperemetre_acs712:acs-712-pinouts.png?direct |}}
//image [[http://henrysbench.capnfatz.com]]//

===== Spécifications des 3 modèles (5, 20 et 30 A) =====
{{:documentation:microcontroleurs:arduino:modules:amperemetre_acs712:acs712_5a_20a_30a.png?direct|}}

===== Exemple de code =====
<code cpp>
/*
Measuring Current Using ACS712
*/
const int analogIn = A0;
int mVperAmp = 185; // use 100 for 20A Module and 66 for 30A Module
int RawValue= 0;
int ACSoffset = 2500; 
double Voltage = 0;
double Amps = 0;

void setup(){ 
 Serial.begin(9600);
}

void loop(){
 
 RawValue = analogRead(analogIn);
 Voltage = (RawValue / 1024.0) * 5000; // Gets you mV
 Amps = ((Voltage - ACSoffset) / mVperAmp);
 
 
 Serial.print("Raw Value = " ); // shows pre-scaled value 
 Serial.print(RawValue); 
 Serial.print("\t mV = "); // shows the voltage measured 
 Serial.print(Voltage,3); // the '3' after voltage allows you to display 3 digits after decimal point
 Serial.print("\t Amps = "); // shows the voltage measured 
 Serial.println(Amps,3); // the '3' after voltage allows you to display 3 digits after decimal point
 delay(2500); 
 
}
</code>

===== Datasheet ACS712 =====
{{ :documentation:microcontroleurs:arduino:modules:amperemetre_acs712:acs712-datasheet.pdf |}}