HS-S05C-L Omnidirectional Microphone Module

1. Introduction

2. Schematic

INMP441 Omnidirectional Microphone Module - HS-S05C-L Schematic Click to View

Module Parameters

• Supply voltage: 3.3V

• Connection method: PH2.0 4P terminal wire

• Installation method: Modular fixed

4, Circuit Board Size

5 of Arduino IDE example program

Choose the development board Python ESP32 [ESP32 Generic(4MB)] and upload in code mode

Attention: If prompted with an error message about the library file during program upload, please import the library file first!
Download and import tutorial for Mixly IDE ESP32 library:Click to view

Example program (ESP32-Python):

#define SAMPLE_RATE (44100)
#define I2S_MIC_WS (12)
#define I2S_MIC_SD (13)
#define I2S_MIC_BCK (14)
#define I2S_PORT_0 (I2S_NUM_0)
#define bufferLen (1024)
#include "Arduino.h"
#include "driver/i2s.h"

int16_t sBuffer_RX[bufferLen];
size_t bytesIn = 0;

void I2s_Mic_Init()
 {
   i2s_config_t i2s_config_RX{};
   i2s_config_RX.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX);
   i2s_config_RX.sample_rate = SAMPLE_RATE;
   i2s_config_RX.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT;
   i2s_config_RX.channel_format = I2S_CHANNEL_FMT_ONLY_LEFT;
   i2s_config_RX.communication_format = (i2s_comm_format_t)(I2S_COMM_FORMAT_I2S | I2S_COMM_FORMAT_I2S_MSB);
   i2s_config_RX.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1;
   i2s_config_RX.dma_buf_count = 8;
   i2s_config_RX.dma_buf_len = bufferLen;
   i2s_config_RX.use_apll = false;
   i2s_driver_install(I2S_PORT_0, &i2s_config_RX, 0, NULL);
   i2s_pin_config_t pin_config_RX{};
   pin_config_RX.mck_io_num = I2S_PIN_NO_CHANGE;
   pin_config_RX.bck_io_num = I2S_MIC_BCK;
   pin_config_RX.ws_io_num = I2S_MIC_WS;
   pin_config_RX.data_out_num = I2S_PIN_NO_CHANGE;
   pin_config_RX.data_in_num = I2S_MIC_SD;
   i2s_set_pin(I2S_PORT_0, &pin_config_RX);
   i2s_start(I2S_PORT_0);
 }
int16_t* Mic_Value()
 {
   i2s_read(I2S_PORT_0, sBuffer_RX, sizeof(sBuffer_RX), &bytesIn, portMAX_DELAY);
   for (int i = 0; i < bufferLen; i++)
   {
     sBuffer_RX[i] = sBuffer_RX[i]*2;
     if (sBuffer_RX[i] > (32767))
       sBuffer_RX[i] = (32767);
     else if (sBuffer_RX[i] < (-32768))
       sBuffer_RX[i] = (-32768);
   }
   return sBuffer_RX;
 }

void setup(){
  I2s_Mic_Init();
  Serial.begin(115200);
}

void loop(){
  short *data = Mic_Value();
  for (int i = 0; i <= 1023; i = i + (1)) {
    Serial.println(data[i]);
  }

}

6, Miciqi Mixly Example Program (Graphical Language)

MiXdk library file (ESP32 development board-C language version):Click to download

Sample Program (ESP32 Development Board - C Language Version):Click to download

7, Test Environment Setup

Arduino ESP32 Test Environment Setup

Prepare Components:

• ESP32 Development Board *1

• ESP32 EXP1 Expansion Board *1

• USB TYPE-C DATA CABLE *1

• HS-S05C-L Omnidirectional Microphone Module*1

• PH2.0 5P PH2.0 connector to DuPont wire *1

Circuit wiring diagram:

ESP32 Test Environment Setup

Prepare Components:Pending update...

Circuit wiring diagram:Pending update...

8. Video tutorial

Arduino UNO video tutorial:Click to view

ESP32 Python Video Tutorial:Click to view

9, test result

Arduino UNO test results: