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--- documentation:microcontroleurs:arduino:modules:49e_hall_effect:index [2021/08/02 17:44] – f1sls
+++ documentation:microcontroleurs:arduino:modules:49e_hall_effect:index [2021/08/03 07:06] (Version actuelle) – [CODE] f1sls
@@ Ligne 9: / Ligne 9: @@
 ===== ARDUINO WIRING =====
+{{:documentation:microcontroleurs:arduino:modules:49e_hall_effect:49e_arduino_wiring.jpg?direct&600|}}
 ===== DOCUMENTATIONS =====
   * {{ :documentation:microcontroleurs:arduino:modules:49e_hall_effect:ss49e_secelectronics.pdf |SS49E Datasheet}}
+===== CODE =====
+<code cpp>
+// -------------------------------------
+// 49E Hall Effect Sensor - Code Example
+// -------------------------------------
+const int pinHall = A0;
+void setup() {
+  pinMode(pinHall, INPUT);
+  Serial.begin(9600);
+}
+void loop() {
+  //we measure 10 times adn make the mean
+  long measure = 0;
+  for(int i = 0; i < 10; i++){
+      int value =
+      measure += analogRead(pinHall);
+  }
+  measure /= 10;
+  //voltage in mV
+  float outputV = measure * 5000.0 / 1023;
+  Serial.print("Output Voltaje = ");
+  Serial.print(outputV);
+  Serial.print(" mV   ");
+  //flux density
+  float magneticFlux =  outputV * 53.33 - 133.3;
+  Serial.print("Magnetic Flux Density = ");
+  Serial.print(magneticFlux);
+  Serial.print(" mT");
+  delay(2000);
+}
+</code>
+<code cpp>
+/*
+Analog 49E Hall Effect sensor test
+Basic code for reading the analog output of the 49E hall effect sensor.
+Sensor is connected to A0, but can be any analog input pin.
+*/
+const int AnalogPin = A0;
+const float GAUSS_PER_STEP = 2.57;  // Sensor outputs approx 1.9mV / Gauss.
+                                    // ADC step is about 4.89mV / Step for 5V operation.
+float rawValue = 0.0;               // Raw ADC Reading
+float gaussValue = 0.0;
+float zeroLevel = 518.0;  // Adjust value as needed to get zero rawValue output with no magnetic field.
+//===============================================================================
+//  Initialization
+//===============================================================================
+void setup()
+{
+  pinMode (AnalogPin, INPUT);
+  Serial.begin(9600);         // Set comm speed for debug window messages
+}
+//===============================================================================
+//  Main
+//===============================================================================
+void loop()
+{
+  rawValue = analogRead (AnalogPin) - zeroLevel;  // Output normalized to '0' with no field present
+  Serial.print ("Reading Raw: ");
+  Serial.println (rawValue);
+  // Reading positive relative to the South Pole, the North Pole negative
+  gaussValue = rawValue * GAUSS_PER_STEP;
+  Serial.print ("Reading in Gauss: ");
+  Serial.println (gaussValue);
+  delay (3000);
+}
+</code>
 \\

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