HS-KEY3-L 3P Keypad Module

1. Introduction

2. Schematic

Module Parameters

• Power Supply Voltage: 3.3V / 5V

• Connection method: PH2.0 terminal wire

• Installation method: Modular fixed

4, Circuit Board Size

5 of Arduino IDE example program

Example program (UNO development board): Click to download

volatile int light;

void setup(){
  light = 0;
  pinMode(6, OUTPUT);
  analogWrite(6, 0);
  pinMode(11, INPUT);
  pinMode(9, INPUT);
  pinMode(13, INPUT);
}

void loop(){
  //led灯接D6引脚：四位按键模块1~4分别接开发板11，9，13
  //
  //

  if (digitalRead(11) == 0) {
    light = 0;

  } else if (digitalRead(9) == 0) {
    light = 20;
  } else if (digitalRead(13) == 0) {
    light = 255;
  }
  delay(10);
  analogWrite(6, light);

}

Example Program (ESP32 Development Board — Based on Python language, cannot be uploaded using Arduino IDE):

6, Miciqi Mixly Example Program (Graphical Language)

Example program:Click to download

Example Program (ESP32 Development Board): Click to download

7, Test Environment Setup

Setting up the Arduino Environment

Prepare Components:

• HELLO STEM UNO R3 DEVELOPMENT BOARD *1

• HELLO STEM UNO R3 P EXPANSION BOARD *1

• USB TYPE-C DATA CABLE *1

• LED module (HS-F08L) *1

• 3-Simulated Pushbutton Module (HS-KEY3-L) *1

• PH2.0 5P double-ended terminal line *1
  PH2.0 3P dual headed terminal line *1

Circuit wiring diagram:

Set up Micropython environment

Prepare Components:

Circuit wiring diagram:

8. Video tutorial

Video tutorial: Click to view

9. Test conclusion

After the device is connected to the wire, burn the above program to the UNO-R3 PRO development board and then connect the power supply. Pressing different buttons will also change the brightness of the LED.