Circuit Schematic
Quguo Limited2024-01-18
Circuit Schematic Overview
This page provides a schematic diagram of the circuit connections for the project. The diagram illustrates how various components are interconnected, allowing for a clear understanding of the circuit's functionality.
ESP32-S3 GPIO Configuration Table
Below is the GPIO configuration table for the ESP32-S3 development board:
| Component | Pin Name | GPIO Pin | Notes |
|---|---|---|---|
| INMP441 Microphone Module | SCK | GPIO11 | BCLK |
| WS | GPIO10 | WS | |
| SD | GPIO12 | DATA, 100kΩ pull-down | |
| L/R | GND | Left channel | |
| GND | GND | Ground | |
| 3V3 | 3V3 | Power | |
| MAX98357A Amplifier Module | LRC | GPIO1 | WS |
| BCLK | GPIO2 | BCLK | |
| DIN | GPIO21 | DATA | |
| GAIN | UNUSED | Default 9dB gain | |
| SD | UNUSED | Not used | |
| GND | GND | Ground | |
| 5V | 5V | Power | |
| ASR PRO Voice Recognition Module | PA2 | GPIO18 | TX |
| PA3 | GPIO17 | RX |
Key Components
- ESP32-S3 Development Board: The central microcontroller that manages the overall operation of the circuit.
- ASR PRO Voice Recognition Module: This module is responsible for processing voice commands and interacting with the ESP32-S3.
- INMP441 Microphone: Captures audio input for the voice recognition module.
- MAX98357A Amplifier: Amplifies audio signals to drive the speaker.
- Speaker: Outputs sound based on the processed audio signals.
Schematic Diagram
Connection Overview
- Power Supply: Ensure that all components are powered appropriately. The ESP32-S3 requires a stable power source.
- Microphone Connection: Connect the INMP441 to the ESP32-S3 using I2S protocol for audio data transmission.
- Voice Recognition Module: Interface the ASR PRO with the ESP32-S3 via UART for command processing.
- Amplifier and Speaker: Connect the MAX98357A to the ESP32-S3 for audio output, ensuring proper wiring to the speaker.
Additional Notes
- Make sure to follow the pin configuration as specified in the datasheets of each component.
- Double-check all connections before powering up the circuit to avoid damage to the components.
Feel free to modify the content and schematic as needed to better fit your project requirements.