KY-025 Example Code
In this Arduino sketch we’ll read values from both digital and analog interfaces on the KY-025, you’ll need a magnet to interact with the module.
The digital interface will send a HIGH signal when a magnetic field is detected, turning on the LED on the Arduino (pin 13).
On the other hand, the analog interface will return a HIGH numeric value when there’s no magnetic field present and it’ll drop to zero when a magnet is near.
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int led = 13; // define the LED pin int digitalPin = 3; // KY-025 digital interface int analogPin = A0; // KY-025 analog interface int digitalVal; // digital readings int analogVal; //analog readings void setup() { pinMode(led, OUTPUT); pinMode(digitalPin, INPUT); //pinMode(analogPin, OUTPUT); Serial.begin(9600); } void loop() { // Read the digital interface digitalVal = digitalRead(digitalPin); if(digitalVal == HIGH) // if magnetic field is detected { digitalWrite(led, HIGH); // turn ON Arduino's LED } else { digitalWrite(led, LOW); // turn OFF Arduino's LED } // Read the analog interface analogVal = analogRead(analogPin); Serial.println(analogVal); // print analog value to serial delay(100); } |
Use Tools > Serial Plotter on the Arduino IDE to visualize the values on the analog interface, use a magnet to trigger the switch.
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