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ESP32-A1S ESP32S Audio WiFi Bluetooth Module
$6.5000
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SKU
COM-03-051
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ESP-WROOM-32 ESP32 Wi-Fi Bluetooth Development Board Previous 
ESP32-A1S Audio WiFi Bluetooth Module is a compact audio module from Ai-Thinker for smart audio and IoT projects. It combines Bluetooth 4.2 and Wi-Fi connectivity in an ultra-small SMD form factor. The module uses a dual-core 32-bit processor with a frequency up to 240MHz and supports local music playback through the integrated AC101 audio codec chip. It is designed for audio input and output with headphone, speaker, LINEIN, and microphone support. This module also supports multiple communication and peripheral interfaces for electronics and robotics applications.
Features of ESP32-A1S Audio WiFi Bluetooth Module
- Dual-core 32-bit processor
- Up to 240MHz frequency
- Bluetooth 4.2 support
- Wi-Fi 802.11 b/g/n/e/I support
- AC101 audio codec chip
- Headphone and speaker output
- LINEIN and dual MIC input
- 14 GPIO pins
- On-board PCB antenna
- IPEX socket support
- SMD package
- Cloud platform access support
- FOTA support
Specifications of ESP32-A1S Audio WiFi Bluetooth Module
- Model: ESP32-A1S
- Processor: Dual-core 32-bit CPU up to 240MHz
- Performance: Up to 600DMIPS
- Bluetooth: 4.2
- Wi-Fi: 802.11 b/g/n/e/I
- Audio codec chip: AC101
- Audio output: External headphone and L/R speaker channels
- Audio input: LINEIN and dual MIC input
- GPIO pins: 14
- Default UART baud rate: 115200 bps
- Antenna type: On-board PCB and IPEX socket
- Input voltage: 3.3V DC ±0.3V
- Power consumption: Around 350mA
- Internal SRAM: 520KB
- PSRAM: 4MB
- Default SPI Flash: 32Mbit
- Supported interfaces: UART, SPI, I2C, I2S, PWM, ADC, DAC
- Operating temperature: -20°C to +80°C
- Dimensions: 32x19x3 mm
How to Use ESP32-A1S Audio WiFi Bluetooth Module
- Connect the module using the 3.3V DC ±0.3V supply.
- Wire the required audio input, audio output, and interface pins.
- Configure the module through UART, SPI, I2C, I2S, PWM, ADC, or DAC as needed.
- Use the antenna connection type that matches your setup.
More Info
- Package type: SMD
- Audio formats include MP3, AAC, FLAC, OGG, OPUS, M4A, and WAV
- Supports SoftAP and Station mode
| MCU/SoC | ESP32 |
|---|---|
| Product Family | ESP32 |
| Architecture | Tensilica Xtensa LX6 |
| CPU Cores | Dual-core |
| Clock Speed (MHz) | 240 MHz |
| Flash | 4 MB (32 Mbit) |
| SRAM | 520 KB |
| EEPROM | No |
| External Memory | 4 MB PSRAM |
| GPIO Pins | 14 |
| USB Ports | No |
| CAN Bus Support | 1 |
| Ethernet Support | No |
| DAC Channels | 2 |
| Timers Count | 4 |
| Operating Voltage (V) | 3.3V |
| GPIO Voltage (V) | 3.3V |
| Active Current (mA) | 350 mA |
| Wireless | Bluetooth, WiFi |
| Form Factor | 32 x 19 x 3 mm |
| IDE Support | Arduino IDE, MicroPython, ESP-IDF |
| Input Voltage (V) | 3.3V |
| Antenna Type | External IPEX/IPX, Internal Antenna |
| Bluetooth Ver. | 4.2 |
| Operating Temp (°C) | -20°C to +80°C |
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