ESP32-A1S Wi-Fi+BT Audio Development Kit

ESP32-A1S Wi-Fi+BT Audio Development Kit is an advanced development kit designed for audio projects based on IoT technology.

At the heart of the kit is the ESP32-A1S module, which can function as a standalone system, offering high performance and extensive functionality. The kit provides significant computing power and stable operation even in complex audio applications. It features audio connectors on both sides of the board, including 3.5 mm jacks for headphones and line-in, as well as connectors for stereo speakers (4Ω / 3W).

With support for dual-channel output, users can achieve full, spatial sound.

Features

• Processor: Dual-core Xtensa® 32-bit LX6 (up to 600 DMIPS)
• Memory: 520 KB SRAM + 8 MB PSRAM, Flash 32 Mbit
• Connectivity: Wi-Fi 802.11 b/g/n (up to 150 Mbps), Bluetooth 4.2 BR/EDR + BLE
• Support for Smart Config and Airkiss, one-click network configuration
• Operating modes: STA / AP / STA+AP
• Support for microSD cards up to 64 GB
• Audio output: 4Ω 3W speakers (left/right channel), 3.5 mm headphone output
• Audio input: LINE-IN and two analog microphones
• Interfaces: UART, SPI, I2C, PWM
• I/O Ports: 10
• Power supply: 5V/2A (USB) or 3.7V Li-ion battery
• Integrated microphones for voice input and headset
• Built-in FreeRTOS and LwIP
• Wi-Fi frequency range: 2.4–2.5 GHz
• Supported audio formats: CVSD, SBC
• Dimensions: 72 x 68 mm