M5Stack Cardputer Adv Version ESP32-S3

The M5Stack Cardputer-Adv is a programmable card-sized mini-computer powered by the powerful Stamp-S3A core module (ESP32-S3FN8). It features a 1.14-inch LCD color display and a 56-key mini-keyboard for convenient operation and data entry. Integrated audio features such as the ES8311 audio codec, a MEMS microphone with a high signal-to-noise ratio, an NS4150B amplifier, and a 1W speaker ensure high-quality sound recording and playback. Additionally, a 3.5mm audio output is available for connecting external headphones or speakers. Inside, the device has a 1750 mAh lithium-ion battery. The energy-efficient design and a separate power switch allow for long battery life. Further features include a 6-axis IMU motion sensor (BMI270), an infrared transmitter, a microSD card slot, as well as an HY2.0-4P Grove port and a 14-pin expansion bus (2.54 mm) for connecting additional sensors and modules. The back is magnetic, allowing the Cardputer-Adv to be attached to metallic surfaces. It is also equipped with LEGO-compatible mounting holes. Thanks to the ESP32-S3 chip, the device offers integrated WiFi and Bluetooth 5.0 LE for wireless communication. This makes the Cardputer-Adv ideal for rapid prototyping, industrial control projects, home automation, and many other applications.

Recommended Accessories:

M5Stack LoRa+GPS Cap LoRa868 for Cardputer Adv with SX1262 868-923MHz

Features:

Powerful Stamp-S3A core module (ESP32-S3FN8) as the controller
Integrated 56-key keyboard for input
1.14-inch LCD display (color display)
Pleasant typing feel with 160g key actuation force
ES8311 audio codec integrated
Built-in MEMS microphone with high signal-to-noise ratio
NS4150B audio amplifier and 1W speaker integrated
3.5mm audio jack for headphones or external speakers
Integrated infrared transmitter (IR)
6-axis motion sensor (BMI270 IMU)
HY2.0-4P Grove port for extensions
14-pin (2.54 mm) EXT expansion bus
Built-in microSD card slot
Integrated 1750 mAh Li-ion battery
Magnetic back for attaching to metal surfaces
Supports Arduino, UiFlow2, ESP-IDF, and PlatformIO as development platforms
Officially recommended by Anthropic as hardware for the Claude Desktop Buddy (BLE connection to Claude Cowork and Claude Code, see claude.com/code-with-claude/makers)

Application Examples:

Fast prototyping and functional testing
Industrial control and automation
Development and learning in embedded systems
Wireless communication and IoT projects
Claude Desktop Buddy – physical AI companion device for Anthropic's Claude, displays authorization prompts, session status, and allows approve/deny directly on the device
Build with Claude Maker Stations – complete setup for maker events with one-command flash via Claude Code

Claude Desktop Buddy – Recommended Hardware by Anthropic

The Cardputer Adv is officially featured on claude.com/code-with-claude/makers as maker hardware for the Claude Desktop Buddy and is used as the official platform at Anthropic events "Code w/ Claude" (London, San Francisco, Tokyo).

The Claude Desktop Buddy is a maker device connected via Bluetooth Low Energy (BLE) with Claude Cowork and Claude Code, that:

Displays permission requests directly on the device and allows approve/deny
Visualizes the status of ongoing sessions, token counts, and activity
Can be personalized with own apps and ASCII or GIF characters

One-Command Setup: With the official Anthropic repo github.com/moremas/build-with-claude the Cardputer Adv becomes a ready-to-use Claude Buddy in about 5 minutes – Claude Code flashes firmware and apps automatically via m5-onboard go.

Note: The BLE feature is available in the developer mode of the Claude Desktop App (Help → Troubleshooting → Enable Developer Mode).