Ky-028 Digital Temperature Sensor Module For Arduino

Simple circuit of digital temperature module and integrated LED connecting to digital 13 interface to make temperature indicator light.

Use number 13 interface to connect the integrated LED, connect digital temperature sensor to number 3 interface. When the digital temperature sensor senses key signal, the LED is on, otherwise, it’s out.

Example code:

int Led = 13 ;/ / define LED Interface
int buttonpin = 3; / / define the digital temperature sensor interface
int val ;/ / define numeric variables val
void setup() {
  pinMode(Led, OUTPUT) ;/ / define LED as output interface
  pinMode(buttonpin, INPUT) ;/ / define digital temperature sensor output interface
}
void loop() {
  val = digitalRead(buttonpin) ;/ / digital interface will be assigned a value of 3 to read val
  if (val == HIGH) { // when the digital temperature sensor detects a signal, LED flashes
    digitalWrite(Led, HIGH);
  } else {
    digitalWrite(Led, LOW);
  }
}