1.Product Introduction

The 4-button module contains four presses, and the circuit is on when a button is pressed and disconnected when it is released. Because the four key switches share one analog output, they can only be connected to the analog port. Each key corresponds to an analog value, so as to realize the discrimination of different keys.

Application reference: remote control, keyboard, game controller, etc.

2.Parameter Specification

3.Wiring Diagram

4.Sample Code

 1int n = 0;
 2
 3void setup(){
 4  Serial.begin(115200);//Set baud rate
 5}
 6
 7void loop(){
 8  n = analogRead(32);//Define the analog pin for the 4-Button
 9  //Print different button values
10  if(n<10){
11    Serial.println("Right: "+String(n));
12    }
13  else if(n>10 && n<=1000){
14    Serial.println("Down: "+String(n));
15    }
16  else if(n>1000 && n<=3000){
17    Serial.println("Left: "+String(n));
18    }
19  else if(n>3000 && n<=4000){
20    Serial.println("Up: "+String(n));
21    }
22  delay(300);
23}

5.Test Result

When you successfully connect the line according to the wiring diagram and successfully upload the correct program, when a certain button is pressed, the serial port monitor will print the corresponding button value.

6.Related Resources

PDF and Code

7.Get One Now

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