1. Introduction
This manual provides essential information for the M5Stack Official Cardputer with M5stampS3 v1.1 Development Kit. It covers product features, setup instructions, operational guidelines, maintenance tips, and technical specifications to ensure proper use and functionality.

Image 1.1: The M5Stack Cardputer v1.1 Development Kit, a compact, card-sized computer with a full QWERTY keyboard and integrated M5stampS3 microcontroller.
2. Package Contents and Setup
2.1. What's in the Box
- Cardputer v1.1 x 1
- L-shaped hex wrench 1.5mm (for M2 screws) x 1

Image 2.1: The Cardputer v1.1 and the included hex wrench for potential assembly or maintenance.
2.2. Initial Power-On and Configuration
- Power Connection: Connect the Cardputer to a power source using the USB-C port. The device includes a 1400mAh battery.
- SD Card Insertion: For optimal use, insert a Micro SD card (32GB or less recommended) into the designated slot.
- Firmware: The device comes with pre-installed firmware. To explore additional functionalities or custom applications, consider installing the M5 Launcher or M5Stack Burner. Refer to the official M5Stack website for detailed instructions and available firmware.
3. Hardware Overview
The Cardputer v1.1 integrates several components into a compact form factor.

Image 3.1: Key external features of the Cardputer v1.1, including the 1.14" IPS-LCD, 56-key keyboard, microphone, speaker, and M5stampS3 module.
3.1. Main Components
- Microcontroller: M5stampS3 (ESP32-S3)
- Display: 1.14-inch IPS-LCD (ST7789V2, 240x135 pixels)
- Input: 56-key QWERTY keyboard, PDM-MIC@SPM1423 (microphone)
- Output: I2S-Speaker@NS4168 (1W speaker)
- Connectivity: Wi-Fi, Bluetooth, Grove port (G5V G2 G1), Micro SD card slot, USB-C
- Power: Internal 120mAh battery, additional 1400mAh battery in the backpack module.
- Other: IR G44 (infrared), Magnet, Button RST (reset), Button GO.

Image 3.2: An internal view of the Cardputer's main board, highlighting the M5stampS3, IPS-LCD, and various connection points.
3.2. Physical Dimensions
The device measures approximately 84mm (3.3in) in length, 54mm (2.1in) in width, and 19.7mm (0.77in) in thickness, with a weight of approximately 90.0 grams.

Image 3.3: Physical dimensions of the M5Stack Cardputer v1.1.
4. Operating the Cardputer
4.1. Keyboard and Screen Interaction
The Cardputer features a 56-key QWERTY keyboard for text input and command execution. The 1.14-inch IPS-LCD provides visual feedback and interface navigation.

Image 4.1: A detailed view of the Cardputer's screen and keyboard, showing key layout and display clarity.
4.2. Basic Functions and Applications
The Cardputer is designed for various development and learning applications. Depending on the loaded firmware, it can perform tasks such as:
- Wi-Fi scanning and network analysis
- Timer functions
- System hardware tests (e.g., display, microphone, speaker, gyroscope)
- Infrared remote control capabilities
- Bluetooth Low Energy (BLE) communication
- Embedded system development and learning
- Industrial control and automation
- Home control systems
- Wireless communication and IoT projects

Image 4.2: The Cardputer's screen interface, showing options for Wi-Fi scan, record, chat, and other functions.
4.3. Connectivity Ports
The device offers multiple connectivity options for expansion and interaction:
- Grove Port: For connecting M5Stack's ecosystem of modules and sensors.
- Micro SD Card Slot: For external storage.
- USB-C Port: For power, data transfer, and programming.

Image 4.3: Side view showing the Grove port for external module connections.

Image 4.4: Side view showing the Micro SD card slot for expandable storage.
5. Specifications
| Feature | Detail |
|---|---|
| SoC | ESP32-S3@Xtensa LX7 Wi-Fi, USB-OTG function |
| Flash | 16MB Flash |
| PSRAM | 8MB PSRAM |
| Wi-Fi | 802.11 b/g/n (2.4 GHz Wi-Fi) |
| Touch | FT6336U@capacitive touch, touch area pixels 320 x 280 (Note: Product description states 1.14" IPS-LCD 240x135, this touch spec might be for a different model or general capability) |
| LCD Screen | 1.14"@240 x 135 ILI9342C, SPI communication |
| Power Management Chip | AXP2101 |
| RTC | BM8563 |
| CPU Manufacturer | Espressif |
| Number of Processors | 2 |
| RAM | LPDDR4 |
| Operating System | Linux (Note: This is a general capability, specific firmware may vary) |
| Item Weight | 3.52 ounces |
| Package Dimensions | 5.63 x 3.58 x 0.91 inches |
| Batteries | 1 Nonstandard Battery (included) |
6. Maintenance
6.1. Battery Care
The Cardputer contains an internal 120mAh battery and an additional 1400mAh battery in the backpack module. To prolong battery life:
- Avoid extreme temperatures.
- Charge the device regularly, but avoid overcharging or completely draining the battery for extended periods.
- Use the provided USB-C cable for charging.

Image 6.1: An exploded view illustrating the internal battery component of the Cardputer.
6.2. Cleaning
Use a soft, dry cloth to clean the device. Avoid using harsh chemicals or abrasive materials that could damage the screen or casing.
7. Troubleshooting
If you encounter issues with your Cardputer, consider the following general troubleshooting steps:
- Power Issues: Ensure the device is fully charged or connected to a stable power source.
- Device Unresponsive: Try pressing the Reset button (BtnRst) or power cycling the device using the ON/OFF switch.
- Firmware Related: If a specific function is not working, it might be related to the installed firmware. Check the M5Stack official documentation for firmware updates or alternative firmware options.
- Connectivity: Verify all physical connections (USB-C, Grove, SD card) are secure.
For more detailed troubleshooting guides and community support, visit the official M5Stack website: m5stack.com. Navigate to the 'DOCUMENT' section and search for your product model to find tutorials and resources.
8. Warranty and Support
The M5Stack Cardputer v1.1 Development Kit is covered by the manufacturer's standard warranty. For specific warranty terms, technical support, or service inquiries, please refer to the official M5Stack website or contact their customer service directly. Additional protection plans may be available from your retailer.





