robotindex M5StackChan AI Desktop Robot
M5Stack's preassembled AI desktop companion built on the ESP32-S3-based CoreS3 controller — a pan/tilt face display with camera and voice interaction, co-created with the open-source Stack-chan community project. Factory firmware can be replaced with community alternatives over USB.
Manufacturer page — shop.m5stack.com →
Image: M5Stack (official)
Specs
Battery
550 mAhruntime/charge time not disclosed
Dimensions
54 × 70.5 × 61.5 mm187 g
Connectivity
Wi-Fi + BT 5 LE802.11 b/g/n, NFC, IR
Sensors
9-axis IMUBMI270 + BMM150; + proximity/light
Camera
GC0308640×480, 0.3MP
Display
2.0" IPS Touch320×240, capacitive multi-touch
Microphone
Dual micES7210 codec + 1W speaker
Actuation
360° / 90°continuous pan, tilt head
Subscription
Nonefully local option; StackChan World app optional for setup
Reference Price
$99.00 for the assembled StackChan unit with CoreS3 pre-installed, per M5Stack's official store. Includes a 50cm USB-A-to-USB-C cable, a character expression sticker, a printed manual, and a carrying case.
Sensors & Hardware
Built around M5Stack's CoreS3 development module (ESP32-S3), StackChan pairs a 2.0" capacitive touchscreen — used as an animated face — with a two-servo pan/tilt base giving 360° continuous horizontal rotation and 90° of vertical head movement. A front-facing GC0308 camera and dual microphones (ES7210 codec) support the factory AI Agent's voice interaction and a companion mobile app, while a 9-axis IMU (BMI270 + BMM150), NFC reader, and proximity/ambient-light sensor round out the sensor package. A 1W speaker with a 16-bit I2S amplifier handles audio output, and the whole unit runs on a 550 mAh internal battery.
Insights
No recalls, lawsuits, safety incidents, or data-privacy reports were found for the M5StackChan in the sources reviewed here.
Firmware & Community
stack-chan/stack-chan
Official open-source firmware, remote-control firmware, and mobile app source, co-developed by M5Stack and the Stack-chan community.
andymai/stackchan-kai
Independent, clean-slate Rust firmware for the CoreS3 hardware — no_std, built on Embassy, with no cloud dependency.
Specs sourced from M5Stack's official StackChan product page and m5-docs hardware reference, plus the stack-chan/stack-chan and andymai/stackchan-kai GitHub repositories, as of September 2026. The exact open-source license for the official firmware could not be confirmed from the pages checked. robotindex does not sell this product — pricing shown is for reference and may vary by retailer.