Contrôle voltage

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http://forum.mysensors.org/topic/186/new-library-to-read-arduino-vcc-supply-level-without-resistors-for-battery-powered-sensor-nodes-that-do-not-use-a-voltage-regulator-but-connect-directly-to-the-batteries

Pour mesurer l’état de la batterie reliée à l’Arduino :

Importer la librairie Vcc.zip (Box) <voltage>

Sketch exemple :

 #include <Vcc.h>  
 const float VccMin  = 0.0;      // Minimum expected Vcc level, in Volts.  
 const float VccMax  = 5.0;      // Maximum expected Vcc level, in Volts.  
 const float VccCorrection = 1.0/1.0; // Measured Vcc by multimeter divided by reported Vcc  
 Vcc vcc(VccCorrection);  
 void setup()  
 {  
  Serial.begin(9600);  
 }  
 void loop()  
 {   
  float v = vcc.Read_Volts();  
  Serial.print("VCC = ");  
  Serial.print(v);  
  Serial.println(" Volts");  
  float p = vcc.Read_Perc(VccMin, VccMax);  
  Serial.print("VCC = ");  
  Serial.print(p);  
  Serial.println(" %");  
  delay(2000);  
 }

Sketch avec un écran LCD I2C téléchargeable ici (Box)