M5Stack StackChan Open‑Source AI Desktop Robot ESP32S3
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M5Stack StackChan Open‑Source AI Desktop Robot ESP32S3
StackChan is an adorable open-source AI desktop robot co-developed by M5Stack and its global user community. At its core is the M5Stack flagship IoT development kit CoreS3, powered by an ESP32-S3 SoC with a 240 MHz dual-core processor, 16MB Flash, and 8MB PSRAM, supporting both Wi-Fi and Bluetooth LE. The main unit features a 2.0-inch capacitive touch display with a durable glass cover, a 0.3 MP camera, proximity sensor, 9-axis IMU (accelerometer, gyroscope, magnetometer), microSD card slot, 1W speaker, dual microphones, and power/reset buttons.
The robot body connects to the main unit and includes a USB-C port for power and data, a 700 mAh battery, and two feedback servos—one for 360° horizontal rotation, the other for 90° vertical movement. It also integrates 12 RGB LEDs, an infrared transmitter and receiver, a three-zone touch panel, and a full-featured NFC module.
The pre-installed firmware offers a rich set of features, including expressive animations, the XiaoZhi AI assistant, and support for iOS video calls, remote avatars, and device discovery among nearby StackChan units. It’s fully programmable via Arduino and UiFlow2, making it easy to customize behaviors and expand functionality.
Note: The product packaging and software development are still in progress. Final features and documentation may change. Thank you for your understanding.

Highlights
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Open‑source hardware & software – fully customizable.
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AI voice assistant – integrates with smart home and IoT devices.
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Compact desktop design – fun, interactive, and approachable.
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Maker‑ready platform – ideal for prototyping and education.
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Community‑driven project – born from global collaboration.

Technical Specifications
| Specification | Parameter |
|---|---|
| Main Controller | ESP32-S3 Xtensa dual-core 32-bit LX7, 240 MHz 16MB Flash, 8MB 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 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 | 700 mAh battery USB-C power and data Power management IC AXP2101, RTC BM8563 |
| Product Dimensions | 54.0 * 70.0 * 62.0 mm |
| Product Weight | 186.0 g |
| Package Dimensions | Work in progress |
| Gross Weight | Work in progress |



Applications
Your Lively Desk companion

Al Agent for Daily Life
StackChan can also be your daily assistant. Chat with it to get answers to everyday questions, set reminders, or control your smart-home devices and phone with simple voice commands.

A Cute Monitor
StackChan can be your little home guardian. Whether it’s keeping an eye on kids, checking on elders, or noticing unexpected visitors, you can stay in the loop right from your desk or through the app.

Full Control at Your Fingertips
Use the app to remotely control all of StackChan’s functions, such as expressions, movements, and smart-home, anytime and anywhere.

Copy Your Mood
Learning your expressions and repeating what you say, StackChan lets you communicate in a playful way. You can even use it remotely to interact with family, friends, or coworkers, especially on days when you’d rather not be on camera yourself.

Find your chan-mate
StackChan loves making new friends. Using the mobile app, you can find other StackChans looking for companions, helping your little buddy meet new pals and explore playful interactions along the way.

Make it Yours
Change how StackChan looks and behaves. Dress it up with outfits and stickers, tweak its reactions, or download creations shared by the community. Every StackChan can look and act a little differently, just like its owner.

Build it Deeper
StackChan is fully open-source, inside and out. From software and firmware to hardware design, everything is open to exploration. Build new functions, connect modules, and create your own ideas with MicroPython, Arduino, and open I/O.
Join the StackChan World

Certificates and Compliance Documents
Available certification and compliance documents for this product can be reviewed as PDF files below.
- CE Document
- 131730-IEC62133-2 Document
- AiTDG-260313013 EUT PHOTO Document
- AiTDG-260313013E1 EN 301489_EMC-DC Document
- AiTDG-260313013H1 EN 62311 test report Document
- CE Document
- AiTDG-260313013W1_EN 300 328 _BLE Document
- AiTDG-260313013W2_EN 300 328 _2.4g WIFI Document
- Appendix A Document
- Appendix B Document
- DLDN-260312008R- -131730- Document
- MSDS Document
- UN38.3 Document
- UN38.3 Document
- DLDN-260313003- -131730- Document
- DLDN-260313004- -131730-1.2m Document
- RED Document
- SKM_C226i26032715040_0003 Document
- Test Setup Document
1. General Shipping Information
- We provide reliable shipping services with a tracking number for each order.
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- Please make sure your shipping address is accurate before placing your order. We ship strictly according to the address provided at checkout.
- In-stock orders are usually dispatched within 1 business day after order confirmation.
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2. Shipping Rates & Options
Shipping rates are calculated based on order value, destination, and available shipping methods. The final available options will be displayed at checkout.
2.1 Germany Domestic Shipping
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| Deutsche Post | €0.00 - €50.00 | €4.95 | 2-4 Business Days |
| Deutsche Post | Over €50.00 | Free | 2-4 Business Days |
|
DHL Paket (Faster Delivery) |
€0.00 - €50.00 | €6.95 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
€50.00 - €100.00 | €2.00 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
Over €100.00 | Free | 1-3 Business Days |
2.2 Selected EU Countries / Regions
Available EU shipping destinations are shown at checkout based on your shipping address. For orders shipped to selected EU countries or regions outside Germany, we use FedEx Regional Economy.
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| FedEx Regional Economy | €0.00 - €100.00 | €7.95 | 3-5 Business Days |
| FedEx Regional Economy | Over €100.00 | Free | 3-5 Business Days |
EU orders may be fulfilled from our Munich warehouse or, when applicable, from our Shenzhen warehouse depending on inventory availability. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
2.3 United States
| Region | Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|---|
|
Continental U.S. (50 States) |
USPS Ground Advantage | €0.00 - €45.00 | €4.95 | 3-7 Business Days |
| USPS Ground Advantage | Over €45.00 | Free | 3-7 Business Days | |
| USPS Priority Mail | €0.00 - €45.00 | €16.95 | 1-4 Business Days | |
| USPS Priority Mail | Over €45.00 | €14.95 | 1-4 Business Days | |
|
Non-Continental U.S. (AK, HI, PR, etc.) |
USPS Ground Advantage | €0.00 - €60.00 | €6.95 | 5-9 Business Days |
| USPS Ground Advantage | Over €60.00 | Free | 5-9 Business Days |
Non-Continental U.S. regions include Alaska, American Samoa, Guam, Hawaii, the Marshall Islands, the Northern Mariana Islands, Palau, Puerto Rico, the U.S. Virgin Islands, and U.S. Armed Forces addresses.
2.4 International Destinations Outside the EU
For selected international destinations outside the EU, including Switzerland, the United Kingdom, and Norway, shipping rates are as follows:
| Order Amount | Shipping Cost |
|---|---|
| €0.00 - €300.00 | €19.95 |
| Over €300.00 | Free |
For non-EU destinations, import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the recipient.
3. Warehouses & Fulfillment
Our products may be stored in our Munich, Arlington, and Shenzhen warehouses. The actual shipping warehouse depends on product availability and destination.
3.1 Munich Warehouse
For products stored in our Munich warehouse, we use Deutsche Post or DHL Paket for domestic deliveries within Germany. For selected EU destinations outside Germany, we use FedEx Regional Economy.
3.2 Arlington Warehouse
For products stored in our Arlington warehouse, we use USPS or UPS for deliveries within the United States.
3.3 Shenzhen Warehouse
For pre-order items or products fulfilled directly from our Shenzhen warehouse, we arrange reliable international shipping based on destination and inventory status. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
4. Inventory, Pre-orders & Split Shipments
- Inventory Status: Please check the product page for real-time stock information. If an item is out of stock in our local warehouses, it may be marked as “Pre-order”.
- Pre-order Fulfillment: Pre-order items may be shipped directly from Shenzhen or restocked to a local warehouse first before final delivery.
- Split Shipments: If your order contains both in-stock and pre-order items, we may ship them separately. No additional shipping fee will be charged for split shipments caused by our fulfillment arrangement.
5. Customs, Taxes & Delivery Issues
5.1 Customs and Taxes
For EU Member States:
Whether shipped from Germany or China, OpenELAB covers applicable import duties and taxes under DDP service where required. Customers in EU member states should not be charged additional import duties or VAT upon delivery.
For destinations outside the European Union, such as Switzerland, Norway, and the United Kingdom, import duties, taxes, and customs fees may be charged by local authorities upon delivery. These fees are the responsibility of the recipient.
5.2 Damaged, Delayed, or Lost Parcels
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If your parcel is delayed, lost, returned to sender, or the tracking information has not updated for an unusual period of time, please contact us at info@upenelab.com. We will assist you in checking the shipment status with the courier.
5.3 Incorrect Address or Failed Delivery
If a parcel cannot be delivered due to an incorrect or incomplete address provided by the customer, refusal of delivery, or failure to collect the parcel, additional shipping or return costs may apply.
6. VAT
For orders within the EU, VAT is collected at checkout according to the applicable destination rules. No additional VAT should be collected upon delivery for EU member state orders covered under our DDP shipping arrangement.








