/*
Analog input, digital output, serial output
Reads an analog input pin; T000070 Hall Sensor connected to I0 reacts
to the magnet direction and uses the result to light up a T010111 LED Module connected on O0.
Also prints the value of the Hall Sensor to the serial monitor.
created on 7 Dec 2010
by Davide Gomba
This example code is in the public domain.
*/
#define O0 11
#define O1 10
#define O2 9
#define O3 6
#define O4 5
#define O5 3
#define I0 A0
#define I1 A1
#define I2 A2
#define I3 A3
#define I4 A4
#define I5 A5
// These constants won't change. They're used to give names
// to the pins used:
const int analogInPin = I0; // Analog input pin that the Hall Sensor is attached to
const int digitalOutPin= O0; // Digital output pin that the LED is attached to
int sensorValue = 0; // value read from the Linear pot
void setup() {
// initialize serial communications at 9600 bps:
Serial.begin(9600);
pinMode(digitalOutPin, OUTPUT);
}
void loop() {
// read the analog in value:
sensorValue = analogRead(analogInPin);
if (sensorValue < 505) { // notice that the normal value of the sensor is 510
digitalWrite(digitalOutPin, HIGH);
} else {
digitalWrite(digitalOutPin, LOW);
}
// print the results to the serial monitor:
Serial.print("Hall Sensor Value = " );
Serial.println(sensorValue);
// wait 10 milliseconds before the next loop
// for the analog-to-digital converter to settle
// after the last reading:
delay(10);
}
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