Info
product url - Record and Playback Audio Assist Board, ESP32-Based
Board Map, Dimension, Pins, etc.
- purple pin jumpers to left for audio amplifier, and right for direct output
- yellow pin to set to mute the amplifier
- red to set left or right channels for two microphones
- orange leds for power indication and IO15 programmer led
- blue pins for SD MMC high speed SD card setup IO2
Applications, category, tags, etc.
SDMMC_Test
fully bit-3 control
int clk = 14;
int cmd = 15;
int d0 = 2;
int d1 = 4;
int d2 = 12;
int d3 = 13; // GPIO 34 is not broken-out on ESP32-S3-DevKitC-1 v1.1
SD SPI setup
very simple bit0 control
#define SD_CS 13 // SD card chip select
#define SD_MOSI 15 // Custom MOSI pin
#define SD_MISO 02 // Custom MISO pin
#define SD_SCK 14 // Custom SCK pin
I2S microphone
see demo video of frequency below
I2S-microphone-dat - MSM261S4030H0R-dat
#define MIC_BCK_PIN 33 // Clock pin from the mic.
#define MIC_WS_PIN 27 // WS pin from the mic.
#define MIC_DATA_PIN 32 // SD pin data from the mic.
#define MIC_CHANNEL_SELECT_PIN -1 // Left/Right pin to select the channel output from the mic.
I2S speaker
see microSD read wav file and play demo video below
#define I2S_DOUT 26 // I2S Data Output
#define I2S_BCLK 5 // I2S Bit Clock
#define I2S_LRC 25 // I2S Left-Right Clock
or
//i2s.setPins(I2S_SCK/BCLK, I2S_WS/LRC, I2S_SDOUT, I2S_SDIN, I2S_MCLK);
i2s.setPins(5, 25, 26, -1, -1);
amplifier
demo video
code
ref
audio-dat - esp32-shields-dat - MAX98357-dat - dcdc-buck-dat
irrelevant == - SCM1030-dat
old called esp32-i2s-board