Cardputer v1.1 is a high-performance card computer designed for engineers, comprehensively upgraded from the original Cardputer. The new version features an all-new StampS3A microcontroller and optimized core module antenna and keys, significantly enhancing system stability and user experience.
In terms of control and interaction, the product is equipped with a 56-key keyboard and a 1.14-inch TFT screen for efficient display and operation; the onboard SPM1423 digital MEMS microphone supports recording and wake-up functions and outputs audio via an integrated cavity speaker; additionally, an infrared emitter provides external infrared control capabilities.
For expanded functionality, a built-in Grove interface facilitates custom sensor expansion; storage is enhanced with a Micro SD card slot for easy expansion of storage space. The power system employs an internal 120mAh battery alongside a 1400mAh battery in the base, integrating lithium battery charging and boost/buck circuits to greatly extend battery life. Structurally, the base is equipped with magnets for metal adhesion and is compatible with LEGO stud expansion.
This product is widely applicable for rapid functional verification, industrial control, home control systems, and various other application scenarios.
Features
- StampS3A microcontroller
- 56-key keyboard
- 1.14-inch TFT screen
- Cavity speaker and SPM1423 digital MEMS microphone
- Infrared emitter for infrared control interaction
- HY2.0-4P interface
- Micro SD card slot
- Built-in 120mAh and base 1400mAh lithium batteries
- Base with magnets
- Compatible with LEGO stud expansion
- Development Platforms
Includes
- 1 x Cardputer V1.1
- 1 x L-shaped 1.5mm hex key (for M2 screws)
Applications
- Rapid functional verification and prototyping
- Industrial control and automation
- Home control systems
- Data acquisition and sensor monitoring
- Embedded system development and learning
- Wireless communication and IoT projects
Specifications
| Specification | Parameter |
|---|---|
| StampS3A | ESP32-S3 (Xtensa LX7), 8MB Flash, Wi-Fi, OTG, CDC |
| Flash | 8MB |
| Storage | SD Card |
| Keyboard | 56 keys (4 x 14) |
| Button | 1 x Reset key + 1 x User key |
| Grove | 1 x HY2.0-4P |
| Battery Capacity | 120mAh + 1400mAh (in the base) |
| Screen | ST7789V2 @ 1.14 Inch, 240 x 135 px |
| Speaker | 8Ω @ 1W I2S @ NS4168 |
| Microphone | MEMS microphone @ SPM1423 |
| Infrared | At 0°: 410cm (straight-line distance) At 90°: 66cm At 45°: 170cm |
| Sleep Current | DC-4.2V @ 0.15uA |
| Operating Current | IR transmission mode: DC-4.2V/148.07mA Key mode: DC-4.2V/138.93mA |
| Working Temperature | 0-40°C |
| Product Size | 84.0 x 54.0 x 19.7mm |
| Packaging Size | 149.0 x 94.0 x 18.0mm |
| Product Weight | 90.0g |
| Gross Weight | 106.8g |
Difference Between Cardputer V1.1 and Cardputer Adv and Cardputer
| Product Comparison Item | Cardputer-Adv | Cardputer v1.1 | Cardputer |
|---|---|---|---|
| Core Module | Stamp-S3A | Stamp-S3A | Stamp-S3 |
| RGB LED Logic | Shares power with display backlight, optimized control logic | Shares power with display backlight, optimized control logic | Powered directly |
| Antenna Design | Optimized antenna design for better reception | Optimized antenna design for better reception | Standard antenna |
| Battery Capacity | 1750mAh | 120mAh + 1400mAh | 120mAh + 1400mAh |
| Audio Solution | ES8311 | NS4168 + SPM1423 | NS4168 + SPM1423 |
| Audio Port | 3.5mm audio jack | / | / |
| IMU | BMI270 | / | / |
| Keyboard IO Exp. | TCA8418RTWR | 74HC138 | 74HC138 |
| Expansion Ports | HY2.0-4P + EXT 2.54-14P | HY2.0-4P | HY2.0-4P |
| Lanyard Hole | Yes | No | No |
Arduino
Platform.IO
[env:m5stack-stamp-s3]
platform = espressif32
board = esp32-s3-devkitc-1
framework = arduino
upload_speed = 1500000
build_flags =
-DESP32S3
-DCORE_DEBUG_LEVEL=5
-DARDUINO_USB_CDC_ON_BOOT=1
-DARDUINO_USB_MODE=1
lib_deps =
M5Unified=https://github.com/m5stack/M5Unified
ESP-IDF
Easyloader
| Easyloader | Download Link | Remarks |
|---|---|---|
| Cardputer v1.1 User Demo Easyloader | Download | / |
Schematics