NPN to PNP Signal Converter / Adapter Module Wiki- DFRobot


If sensors are used in your equipment or control systems, having these signal converter modules like this NPN to PNP converter readily available could effectively eliminate the last-minute problems that you encounter when your controller and the type of sensor you are using have a mismatched signal. This signal converter is designed to convert NPN signal to PNP and is equipped with surge absorption and over-current protection to further protect your device.




Connection Diagram

Sample Code

Click to download Arduino IDE

int ledPin = 13; // LED connected to digital pin 13
int inPin = 7;   // pushbutton connected to digital pin 7
int val = 0;     // variable to store the read value

void setup()
  pinMode(ledPin, OUTPUT);      // sets the digital pin 13 as output
  pinMode(inPin, INPUT);      // sets the digital pin 7 as input

void loop()
  val = digitalRead(inPin);   // read the input pin
  if (val == LOW) {            // judge the key state,the low is pressed
         digitalWrite(ledPin, HIGH);  //set the LED on and off
      } else {
         digitalWrite(ledPin, LOW);  //set the LED on and off


The light is off when the button is pressed and on when the button is released.


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