Description
StackChan is a super kawaii AI desktop robot co-created by M5Stack and the user community. It uses the M5Stack flagship IoT development kit CoreS3 as its main controller, powered by an ESP32-S3 SoC featuring a 240 MHz dual-core processor, with 16MB Flash and 8MB PSRAM onboard, and supporting Wi-Fi and BLE. The main unit also integrates a 2.0-inch capacitive touch display with a high-strength glass cover, a 0.3 MP camera, a proximity & ambient light sensor, a 9-axis IMU (accelerometer + gyroscope + magnetometer), a microSD card slot, a 1W speaker, dual microphones, and power/reset buttons.
The robot body, connected to the main unit, includes a USB-C interface for power and data, a 550 mAh battery, two feedback servos (360-degree continuous rotation on the horizontal axis and 90-degree movement on the vertical axis), two rows totaling 12 RGB LEDs, infrared transmitter and receiver, a three-zone touch panel, and a full-featured NFC module.
The factory firmware is feature-rich, including an AI Agent, lively and expressive animations, ESP-NOW wireless remote control, and online app downloads. It can connect to a mobile app for video viewing, remote avatar control, and more, and also supports online updates (OTA). The product also supports programming via Arduino, UiFlow2, and other methods, and can connect to various expansion units in the M5Stack ecosystem, making it easy to implement a wide range of custom functions.
Thank you to the contributors of the StackChan community, especially:
 |
 |
| @stack_chan | @mongonta555 |
| Shinya Ishikawa | Takao Akaki |
Note
Features
- Based on the CoreS3 main unit
- For detailed information, please refer to the CoreS3 page
- Robot body
- USB-C interface for power and data
- 550 mAh battery
- Two feedback servos (360-degree continuous rotation on the horizontal axis and 90-degree movement on the vertical axis)
- Two rows totaling 12 RGB LEDs
- Infrared transmitter and receiver
- Top-mounted three-zone touch panel
- Full-featured NFC
- Development platforms
- UiFlow2
- Arduino IDE
- PlatformIO
- ESP-IDF
Includes
StackChan (SKU:K151)
- 1 x Carrying bag or box (depending on the purchased product bundle)
- 1 x StackChan unit (with CoreS3 pre-installed)
- 1 x 50cm USB-A to USB-C Cable
- 1 x Character expression sticker
- 1 x Printed user manual
Applications
- Desktop companion
- AI agent
- Voice-based question and answer
- Smart home
- IoT control
Specifications
| Specification | Parameter |
|---|---|
| Main Controller | ESP32-S3 Xtensa® dual-core 32-bit LX7, 240 MHz 16MB Flash, 8MB Quad PSRAM |
| Wireless Connectivity | 2.4 GHz Wi-Fi, IEEE 802.11 b/g/n Bluetooth® 5 LE Infrared receiver IRM56384 + infrared transmitter |
| Wired Connectivity | USB CDC & full-speed USB OTG GPIO, UART, I2C |
| Display | 2.0-inch IPS LCD, resolution 320*240, 65536 colors, ILI9342C driver Capacitive multi-touch, FT6336U driver |
| Camera | GC0308, 640*480, 0.3 MP |
| Sensors | Dual microphones, ES7210 audio codec Proximity & ambient light sensor LTR-553ALS-WA 9-axis IMU BMI270 + BMM150 (accelerometer + gyroscope + magnetometer) Three-zone touch panel, Si12T driver Full-featured NFC ST25R3916 |
| Human Interactions | 1W speaker, AW88298 16-bit I2S power amplifier RGB LEDs WS2812C * 12 Power and reset buttons Power indicator LED |
| Expansions | microSD card slot Grove interface * 3 LEGO®-compatible mounting holes |
| Motors | 360-degree horizontal servo with feedback 90-degree vertical servo with feedback |
| Power | 550 mAh battery USB-C power and data Power management IC AXP2101, RTC BM8563 |
| Product Size | 54.0 x 70.5 x 61.5mm |
| Product Weight | StackChan: 187.0g Remote Controller: 37.6g |
| Package Size | StackChan: 142.0 x 101.0 x 58.0mm StackChan Remote: 155.0 x 109.0 x 65.0mm |
| Gross Weight | StackChan: 272.4g StackChan Remote: 372.9g |