HS-S32-L Rotational Encoder

1. Introduction

An encoder is a rotating type of sensor that converts rotational displacement into a series of digital pulse signals. By rotating, it can count the number of pulses output during the rotation process in both the positive and negative directions. The rotation count is unlike potentiometers, as this rotation count is unlimited.Cooperate with the buttons on the rotary encoder to enable certain specific functions.The reading system usually adopts a differential method, that is, two waveforms with the same shape but a phase difference of 180° are compared to improve the quality and stability of the output signal.Encoders are widely used in applications such as car volume and air conditioning adjustment.

2. Schematic

Module Parameters

• Power Supply Voltage: 3.3V / 5V

• Connection method: PH2.0 terminal wire

• Installation Method: Double Screw Fixed

4, Circuit Board Size

5 of Arduino IDE example program

Example program:Click to download

volatile int lastCLK;
volatile int count;

void attachInterrupt_fun_RISING_2() {
  procedure();
}

void procedure() {
  int clkstate = digitalRead(2);
  int dtstate = digitalRead(A2);
  if (lastCLK != clkstate) {
    lastCLK = clkstate;

  }
  count = count + ((clkstate != dtstate)?1:(-1));
  Serial.println(count);
}

void setup(){
  lastCLK = 0;
  count = 0;
  Serial.begin(9600);
  pinMode(2, INPUT);
  attachInterrupt(digitalPinToInterrupt(2),attachInterrupt_fun_RISING_2,RISING);
  pinMode(A1, OUTPUT);
  digitalWrite(A1,HIGH);
  pinMode(A2, INPUT);
}

void loop(){
  //编码器CLK接扩展板D2，dt引脚接A2，sw引脚接A1

  if (digitalRead(A1) == 0) {
    count = 0;
    Serial.println(count);

  }

}

6, Miciqi Mixly Example Program (Graphical Language)

Example program:Click to download

7, Test Environment Setup

Prepare Components:

• HELLO STEM UNO R3 DEVELOPMENT BOARD *1

• HELLO STEM UNO R3 P EXPANSION BOARD *1

• USB TYPE-C DATA CABLE *1

• Rotating Encoder Module (HS-S32L) *1

• PH2.0 5P Dupont wire *1

Circuit wiring diagram:

8. Video tutorial

Video tutorial:Click to view

9. Test conclusion

Through experimental analysis, the rotary encoder is a unrestricted rotating device, the count increases with clockwise rotation, the count decreases with counterclockwise rotation, and the count resets to zero when the rotary encoder button is pressed.As shown in the figure: Open the Mxily serial port monitor, turn the rotary encoder knob, and the serial port outputs numbers.