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 servosone 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. Its 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

• Opensource hardware & software fully customizable.

• AI voice assistant integrates with smart home and IoT devices.

• Compact desktop design fun, interactive, and approachable.

• Makerready platform ideal for prototyping and education.

• Communitydriven project born from global collaboration.

Technical Specifications

Applications

Your Lively Desk companion

StackChan comes alive on your desk! It listens when you talk, responds to your touch, and even watches you when needed. Watch it chat, make playful expressions, and even dance for fun. Every moment with StackChan is full of surprises and entertainment.

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 its 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 StackChans 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 youd 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

More than just a robot, StackChan is something you grow into. Around the world, people are customizing behaviors, appearances, and features in their own way. You can explore what others have built, adapt ideas for yourself, or start from scratch. With open-source at its core, StackChan keeps evolving, shaped by how you choose to use it.