ESP32-Audio-Kit WiFi + Bluetooth development board with ESP32-A1S Ai-Thinker

: PCO05102
€27.50
Tax included

Have you ever thought about creating your own sound system capable of processing audio and being able to use voice commands to choose the next song to play?

Here is another good application of ESP32. The versatility of this chip is so great that it can do everything from audio processing, image processing, data acquisition and all this, allied to WiFi and Bluetooth wireless communications.

This board comes with two built-in microphones and also provides connections via 3.5mm jack for connection of external microphone or amplified speakers. You can also directly connect two speakers from 4ohm up to 3W.

As it already have the TTL serial USB converter (CP2101) integrated on the board, you are ready to be able to connect directly to the PC (Micro USB connector) and download your programs.

Quantity

An audio development board based on an ESP32-A1S from Ai-Thinker. The ESP32-A1S is an ESP32 based module containing an audio CODEC with built-in DACs and ADCs, making this development board very well suited for audio projects. Ideal for adding Wi-Fi and/or Bluetooth to your audio project. The USB to serial converter makes it easy to program, even as an Arduino. The board has a micro USB connection with which it can be programmed and/or powered (micro USB cable not included).

Specifications:

  • Supply voltage: 3.3V DC (via 3V3 pin), 5V DC (via micro USB) or 2.5 - 4.2V DC (via JST-XH 2p Li-ion/Li-Po battery connection)
  • GPIO Voltage: 3.3V
  • Microcontroller:
    • Chip: ESP32-S0WD (ESP32-A1S) - click here to ESP32-A1S datasheeet 
    • Clock Frequency: 240MHz
    • Processor cores: 2
    • SRAM: 520KB
    • PSRAM: 4MB
    • Flash memory: 4MB
    • Built-in Wi-Fi
    • Built-in Bluetooth
    • Number of GPIO pins: 9
    • Number of PWM pins: 9
    • Number of analog input pins (ADC): 1
    • Number of analog output pins (DAC): 0
  • USB to serial converter: CP2102 
  • Battery circuit:
    • Chip: TP4056
    • Suitable batteries: Li-ion/Li-Po
    • Maximum charging voltage: 4.2V
    • Maximum charging current: 1A
    • Protection circuit: No
    • Battery connector: JST-XH 2p male
  • Audio CODEC:
    • Chip: ES8388
    • ADC channels: 2 (for microphones or line-in)
    • DAC channels 2 (for amps or line-out)
  • Amplifier:
    • Chip: NS4150 (2x)
    • Number of channels: 2 (stereo)
    • Maximum nominal output power per channel: 3W (4Ω speakers)
    • Speaker impedance range: 4 - 8Ω
  • Audio connections:
    • Headphone/line-out: Audio jack 3.5mm
    • Line-in: Audio jack 3.5mm
    • Speakers: JST-XH 2p male
  • 2 Built-in analog microphones
  • 6 Built-in programmable buttons
  • Built-in SD card holder
  • Dimensions PCB: 68 x 82mm (without antenna), 74 x 82mm (with antenna)

Package contents:

  • 1x ESP32-A1S Audio Development Board

See the tab "Downloads" for a datasheet of the ESP32-A1S including the schematic diagram of this board (section 5.2).

See the following page for sample code: ESP32-A1S-AudioKit .
The board definitions can be found here: Ai_thinker_audio_kit_v2_2

Note: The sample code is written for the ESP-IDF and is relatively complicated. It is recommended that you only start with this if you already have some programming experience.

Size

PCO05102

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