Différences

Ci-dessous, les différences entre deux révisions de la page.

--- documentation:microcontroleurs:arduino:modules:amperemetre_acs712:index [2018/08/03 01:24] – f1sls
+++ documentation:microcontroleurs:arduino:modules:amperemetre_acs712:index [2018/08/03 01:27] (Version actuelle) – f1sls
@@ Ligne 5: / Ligne 5: @@
 ===== 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 |}}