Cardputer v1.1

SKU:K132-V11

Description

Cardputer v1.1 is a high-performance card computer designed for engineers, offering a comprehensive upgrade over the original Cardputer. The new version features the brand new StampS3A main controller, with optimized antenna and button design for the core module, significantly enhancing system stability and user experience. In terms of control interaction, the product is equipped with a 56-key keyboard and a 1.14-inch TFT screen for efficient display and operation; it includes an onboard SPM1423 digital MEMS microphone supporting recording and wake-up functions, and outputs audio through a cavity speaker. Additionally, an infrared emitter provides external infrared control interaction capabilities. For expansion, the built-in HY2.0-4P interface facilitates custom sensor expansion; for storage, a microSD card slot is available for easy storage expansion. The power system uses an internal 120mAh and a base 1400mAh lithium battery power solution, integrating lithium battery charging and boost-buck circuits, greatly enhancing battery life. Structurally, the base includes magnets for metal attachment and is compatible with LEGO hole expansion. This product is widely applicable in various scenarios such as rapid function verification for engineers, industrial control, and home control systems.

Tutorial

Arduino IDE

This tutorial will introduce how to program and control the Cardputer v1.1 device using the Arduino IDE

UiFlow2

This tutorial will introduce how to control the Cardputer v1.1 device through the UiFlow2 graphical programming platform

Note

LCD and RGB LED Usage Precautions

Since the RGB and LCD backlight share a power source, when the LCD backlight brightness is below 100%, the RGB cannot be powered properly. Please use the RGB function with the backlight brightness fully on.

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
microSD card slot
Built-in 120mAh and 1400mAh lithium battery in the base
Base with magnets
Compatible with LEGO hole expansion
Development Platform
- UiFlow2
- Arduino IDE
- ESP-IDF
- PlatformIO

Includes

1 × Cardputer V1.1
1 × L-shaped hex wrench 1.5mm (for M2 screws)

Applications

Rapid function verification and prototyping
Industrial control and automation
Home control systems
Data collection and sensor monitoring
Embedded system development and learning
Wireless communication and IoT projects

Specifications

Specification	Parameter
SoC	ESP32-S3FN8 (Xtensa LX7), 8MB Flash, Wi-Fi, OTG, CDC
Flash	8MB
External Storage	microSD
Keyboard	56 keys (4 × 14)
Buttons	1 × Reset Button + 1 × User Button
Grove	1 × HY2.0-4P
Battery Capacity	120mAh + 1400mAh (in base)
Screen	ST7789V2 @ 1.14-inch, 240 × 135px
Cavity Speaker	8Ω@1W I2S@NS4168
Microphone	MEMS Microphone @ SPM1423
Infrared Distance	∠0° Infrared emission distance (straight line): 410cm ∠90° Infrared emission distance: 66cm ∠45° Infrared emission distance: 170cm
Sleep Current	DC 4.2V@0.15uA
Working Current	IR emission mode: DC 4.2V@148.07mA Keyboard mode: DC 4.2V@138.93mA
Operating Temperature	0 ~ 40°C
Product Size	84.0 × 54.0 × 19.7mm
Product Weight	90.0g
Package Size	145.7 × 95.0 × 20.7mm
Gross Weight	106.8g

Learn

If you want to enter download mode, set the power switch on the side of the Cardputer-Adv to the OFF position, then press and hold the G0 button before powering on. After supplying power to the device, release the button, and the device will enter download mode.

Charging Precautions

When charging the Cardputer v1.1, please switch the power to "ON".

Disassembly Precautions

If you need to remove the StampS3A from the panel, be careful with the FPC cable and connector on the back, gently pull it out to avoid damaging the screen connector. Refer to the operation video in the Cardputer Accessory Kit.

Schematics

1/4

PinMap

SPM1423 MIC

ESP32-S3FN8	G46	G43	3.3V	GND
SPM1423	DAT	CLK	VCC	GND

microSD Socket

ESP32-S3FN8	G12	G14	G40	G39
microSD Socket	CS	MOSI	CLK	MISO

ST7789V2 & RGB LED

ESP32-S3FN8	G38	G33	G34	G35	G36	G37
ST7789V2	DISP_BL	RST	RS	DAT	SCK	CS
RGB LED	VDD

Keyboard & Battery Detect

ESP32-S3FN8	G10	G7/G6/G5/G4/G3/G15/G13	G11/G9/G8
Battery Detect(ADC)	ADC
74HC138		Y7~Y0	A2/A1/A0

Speaker & IR

ESP32-S3FN8	G41	G42	G43	G44
NS4168 (Speaker)	BCLK	SDATA	LRCLK
IR				TX

HY2.0-4P

HY2.0-4P	Black	Red	Yellow	White
PORT.CUSTOM	GND	5V	G2	G1

Model Size

Datasheets

Softwares

Arduino

UiFlow2

Cardputer v1.1 UiFlow2 Quick Start

PlatformIO

[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

[env:m5stack-cardputer]
platform = espressif32@6.7.0
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 =
    M5Cardputer=https://github.com/m5stack/M5Cardputer

ESP-IDF

Cardputer v1.1 User Demo

Easyloader

Easyloader	Download Link	Note
Cardputer v1.1 User Demo Easyloader	download	/

Video

Cardputer v1.1 Product Introduction and Case Demonstration

Product Comparison

Comparison Item	Cardputer v1.1	Cardputer
Core Module	StampS3A	StampS3
RGB LED Control Logic	RGB LED shares power with screen backlight, optimized control logic	Power supplied when powered on
Antenna Design	Optimized antenna design for better signal reception	Standard antenna design
StampS3 module Boot button	Optimized button feel, buttons are 4.0 x 3.0 x 2.0mm	Button specifications 2.6 x 1.6 x 0.55mm
Power Consumption	Optimized for lower power consumption	Standard design

Version Change

Release Date	Product Change	Note
/	First Release	/
2025.8.2	Button actuation force changed from 260gf to 160gf	/