QB100 4-Button Module
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
Parameter |
Value//Description |
|---|---|
Operating voltage |
3.3V~5V |
Operating temperature |
-40°C~+80°C |
Output signal |
Analog signal |
Size |
4.7cm*2.4cm |
3.Wiring Diagram
Hint
Expansion board is attached to esp32 controller board.
4-Button Module |
ESP32 |
|---|---|
S |
32 |
VCC |
5V |
GND |
GND |
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
7.Get One Now
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