hi friend, the Hall sensor is a sensor that uses the Hall effect to measure magnetic fields or currents or for the determination of position, if current flows and by a Hall sensor approaches a magnetic field flowing in vertical direction the sensor, the sensor projecting creates a voltage proportional to the product of magnetic field strength and current
These electrical units are being introduced to the arduino pin that is if we read a digital value high, sete is interpreted as the presence of a magnetic field, and if the value is under no magnetic field, ie can be connected to a digital or analog pin, if we can only play two digital high and low states, eb change if the range of analog values is greater
When asked about the speed you do, you should refer to that speed the arduino communicates with the computer, Hall sensors are available in different brands either Infineon, Panasonic, etc. http://www.hobbytronics.co.uk/datasheets/A1120EUA-hall-effect-switch.pdf andunto technical sheet
and a code for the respective tests lucky
const int hallPin = 12; / / pin de sensor hall
const int ledPin = 13; / / pin LED
int = 0 hallState ;
void setup () {
:
pinMode (ledPin, OUTPUT );
pinMode (hallPin, ENTRADA );
}
void loop ()
{
hallState = digitalRead (hallPin); / / read sensor Hall:
If (== hallState LOW )
{
digitalWrite (ledPin, HIGH );
}
Else
{
digitalWrite (ledPin, LOW );
}
}
