Magnetic Sensors: Reed Switch and Hall Sensor Comparison

1#define Led A3
2#define Reed 13
3
4void setup() {
5   pinMode(Led,  OUTPUT);
6   pinMode(Reed, INPUT);
7   Serial.begin(9600);
8}
9
10void  loop() {
11  Serial.println(digitalRead(Reed));
12  if (digitalRead(Reed)==0 )  {
13    digitalWrite(Led,HIGH) ; 
14  else 
15    digitalWrite(Led, LOW); 
16  }
17}
18

1#define Led A3
2#define Reed 13
3
4void setup() {
5   pinMode(Led,
6  OUTPUT);
7   pinMode(Reed, INPUT);
8   Serial.begin(9600);
9}
10
11void
12  loop() {
13  Serial.println(digitalRead(Reed));
14  if (digitalRead(Reed)==0 )
15  {
16    digitalWrite(Led,HIGH) ; 
17  else 
18    digitalWrite(Led, LOW); 
19
20  }
21}
22

1#define Led A3
2#define Hall A4
3
4void setup() {
5   pinMode(Led,  OUTPUT);
6   pinMode(Hall, INPUT);
7   Serial.begin(9600);
8}
9
10void  loop() {
11  Serial.println(digitalRead(Hall));
12  if (digitalRead(Hall)==0 )  {
13    digitalWrite(Led,HIGH) ; 
14  else 
15    digitalWrite(Led, LOW); 
16  }
17}
18