Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Processor | ESP32-S3 Dual-core Xtensa LX7 MCU |
| Wireless Connectivity | Wi-Fi 802.11b/g/n and Bluetooth 5 (LE) |
| Audio Codec | ES8311 Mono Audio Codec with Headphone Amp |
| Microphones | 2x Digital MEMS Microphones (I2S Interface) |
| Speaker Output | 3W Mono Speaker Driver Support |
| Display Interface | MIPI-CSI Camera & LCD Interface Support |
| Flash Memory | 16MB Quad SPI Flash |
| PSRAM | 8MB Octal SPI PSRAM |
| Power Supply | 5V via USB-C or Battery Input |
| AI Capabilities | Hardware Accelerated Neural Network Instructions |
Anonymous
Mar 25, 2026
Rating: 5/5
Excellent for Edge AI
The neural network acceleration on the S3 chip is a game changer. I managed to run a keyword spotting model with very low latency. The 8MB PSRAM is sufficient for most buffer-heavy audio applications.
Anonymous
Mar 22, 2026
Rating: 4/5
Good for learning embedded systems
Bought this for my university final year project. It handles audio streaming well. The only downside is that the header pins were not pre-soldered, so I had to do that myself before starting.
Anonymous
Mar 14, 2026
Rating: 4/5
Great hardware, documentation could be better
The hardware quality is excellent, especially the audio codec performance. However, finding specific pinout diagrams for the camera interface took some digging in the forums. Once set up, it runs machine learning models very efficiently.
Anonymous
Mar 11, 2026
Rating: 5/5
Perfect for Voice AI Projects
This board is exactly what I needed for my XiaoZhi AI assistant project. The dual microphones pick up voice commands clearly even with background noise, and the Wi-Fi connection is stable. Setup with the ESP-IDF was straightforward.
Anonymous
Mar 05, 2026
Rating: 5/5
Best value for ESP32-S3 audio boards
I've tried several development boards, and this Korvo V3 offers the best balance of price and features. The Bluetooth LE connectivity works flawlessly with my mobile app tests. Highly recommended for prototyping smart speakers.
Anonymous
Mar 02, 2026
Rating: 5/5
Clean audio output
Impressed by the signal-to-noise ratio on the microphone inputs. The ES8311 codec drives my test speaker with surprising clarity. Great board for anyone getting into voice recognition development.
Q: What development environments are compatible with this board?
A: This board is fully compatible with ESP-IDF (C/C++), Arduino IDE, MicroPython, and CircuitPython. It is also supported by third-party platforms like PlatformIO.
Q: Does it support multi-room audio synchronization?
A: While the hardware supports Wi-Fi and Bluetooth necessary for synchronization, implementing multi-room audio requires custom software logic or specific third-party frameworks; it is not a built-in out-of-the-box feature.
Q: Does this board support external camera modules for video processing?
A: Yes, the ESP32-S3-Korvo-2 V3 features a MIPI-CSI interface that supports various OV series camera modules, enabling basic video capture and processing capabilities alongside audio.
Q: Is the XiaoZhi AI firmware pre-installed on the board?
A: No, the board ships with a basic bootloader. You will need to flash the XiaoZhi AI firmware or your own custom code using the ESP Flash Download Tool or VS Code with the ESP-IDF extension.
Q: Can I power this board directly via a Li-Ion battery?
A: Yes, there is a dedicated battery connector on the board that supports single-cell Li-Ion/Li-Po batteries. The board includes charging circuitry when powered via USB-C.
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