Cardputer

SKU:K132

Description

Cardputer is a card-sized computer suitable for engineers, using M5StampS3 as the main controller. For control interaction, it is equipped with a 56-key keyboard and a 1.14-inch TFT screen for display interaction. Additionally, it has an onboard SPM1423 digital MEMS microphone for recording or wake-up operations, and a cavity speaker for sound playback. It also features an infrared emitter for external infrared control interaction. For expansion, it has an onboard Grove port for custom sensor expansion. For storage, it has a Micro SD card slot for storage expansion. For power supply, it is equipped with a 120mAh + 1400mAh (in the base) lithium battery solution to power the entire machine, greatly improving battery life, with built-in lithium battery charging and boost-buck circuits. Structurally, the base contains a magnet for metal adsorption, and the structure is compatible with LEGO hole expansion. This product is suitable for engineers for quick function verification design, industrial control, home control systems, and other scenarios.

Tutorial

Arduino IDE

This tutorial will introduce you to programming and controlling the Cardputer device using the Arduino IDE

UiFlow2

This tutorial will introduce you to controlling the Cardputer device using the UiFlow2 graphical programming platform

Features

M5StampS3 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 for connecting and expanding I2C sensors.
Micro SD card slot for storage expansion.
Built-in 120mAh and 1400mAh lithium battery in the base for long battery life.
Base with magnet, compatible with LEGO hole expansion.
Development Platform
- UiFlow2
- Arduino IDE
- ESP-IDF
- PlatformIO

Includes

1 x Cardputer
1 x M2 Hex Wrench

Applications

Quick 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	Parameters
StampS3	ESP32-S3@Xtensa LX7, 8M-FLASH, WIFI, USB-OTG function
Flash	8MB
Storage	SD Card
Keyboard	56 keys (4 x 14)
Buttons	1 x Reset button + 1 x User button
Grove	1 x HY2.0-4P
Battery Capacity	120mAh + 1400mAh (in the base)
Screen	ST7789V2@1.14 Inch, 240 x 135px
Cavity Speaker	8Ω@1W I2S@NS4168
Microphone	MEMS Microphone@SPM1423
Infrared Emission Distance	Infrared emission distance at ∠0° (straight line): 410cm At ∠90°: 66cm At ∠45°: 170cm
Sleep Current	DC 4.2V@0.26uA
Working Current	In IR emission mode: DC 4.2V@255.6mA In keyboard mode: DC 4.2V@165.7mA
Operating Temperature	0 ~ 40°C
Product Dimensions	84.0 x 54.0 x 19.7mm
Product Weight	92.3g
Package Dimensions	145.7 x 95.0 x 20.7mm
Gross Weight	109.9g

Learn

Download Mode

To enter download mode, press and hold the G0 button on the side of the Cardputer before powering on. Release it after powering the device, and it will enter download mode.
schematics

Charging Precautions

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

Disassembly Precautions

If you need to remove the StampS3 from the panel, be careful with the FPC cable and connector on the back. Gently lift it to avoid damaging the screen connector. Refer to the operation video in the Cardputer Accessory Kit .

Schematics

1/3

PinMap

SPM1423 MIC

StampS3	G46	G43	3.3V	GND
SPM1423	DAT	CLK	VCC	GND

Micro SD Socket

StampS3	G12	G14	G40	G39
Micro SD Socket	CS	MOSI	CLK	MISO

ST7789V2 & RGB LED

StampS3	G38	G33	G34	G35	G36	G37
ST7789V2	DISP_BL	RST	RS	DAT	SCK	CS
RGB LED	VDD

Keyboard & Battery Detect

StampS3	G10	G7/G6/G5/G4/G3/G15/G13	G11/G9/G8
Battery Detect(ADC)	ADC
74HC138		Y7~Y0	A2/A1/A0

Speaker & IR

StampS3	G41	G42	G43	G44
NS4168 (Speaker)	BCLK	SDATA	LRCLK
IR				TX

HY2.0-4P

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

Datasheets

Softwares

Arduino

UiFlow2

Cardputer 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

ESP-IDF

Cardputer User Demo

Easyloader

Easyloader	Download Link	Note
Cardputer User Demo Easyloader	download	/

Video

Cardputer Introduction Video