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. NOTE: Motor Safety Do not forcibly rotate any movable parts connected to the motors by hand when you are unsure whether the motors are powered and under control, as this may cause hardware damage. Motion Angle Notice The movement angle of the StackChan Y-axis servo (vertical direction) is recommended to be controlled within 5 ~ 85°. Operating at extreme angles may cause servo stall and permanent damage. No angle restriction is required for the X-axis. Stackchan App The Stackchan App supports connections only to original StackChan core controllers, including those in the standard StackChan unit and the Remote Controller Kit, as well as the separately sold StackChan Core replacement controller. Before use, the StackChan user firmware must be flashed to the device. Note that this app cannot connect to non-original core models such as CoreS3, CoreS3-SE, and CoreS3-Lite. 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 APPLICATIONS Desktop companion AI agent Voice-based question and answer Smart home IoT control TECHNICAL DETAILS 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 DOCUMENTS Click here SHIPPING LIST 1x Carrying bag or box (depending on the purchased product bundle) 1x StackChan unit (with CoreS3 pre-installed) 1x 50cm USB-A to USB-C Cable 1x Character expression sticker 1x Printed user manual