Dial v1.1

SKU:K130-V11

Description

Dial v1.1 is a high-performance, multifunctional embedded development board that has been fully upgraded from the original Dial product. The new version features the StampS3A as the main controller, further enhancing system processing power and stability. Additionally, the core module antenna and buttons have been optimized to effectively improve wireless communication performance and user interaction experience. The product is equipped with a 1.28-inch round TFT touch screen and a high-precision rotary encoder, and includes an RFID detection module, RTC circuit, onboard buzzer, and under-screen buttons to enable device interaction and wake-up alerts. The power supply solution supports DC 6～36V wide voltage input and includes a lithium battery interface and charging circuit to meet diverse application needs. Furthermore, the reserved PORT.A and PORT.B interfaces facilitate the expansion of I2C and GPIO devices. This product is widely applicable in smart home control, IoT applications, smart wearables, access control systems, industrial control, and educational maker projects.

Tutorial

Arduino IDE

This tutorial will guide you on how to program and control the Dial v1.1 device using Arduino IDE

UiFlow2

This tutorial will guide you on how to control the Dial v1.1 device using the UiFlow2 graphical programming platform

Features

Round TFT touch screen
StampS3A as the main controller
Rotary encoder
RFID detection module
Wide voltage input
Interface expansion: Reserved PORT.A and PORT.B interfaces
Development Platform
- UiFlow2
- Arduino IDE
- ESP-IDF
- Platform.IO

Includes

1 x Dial V1.1
1 x L-shaped 1.5mm hex wrench (compatible with M2 screws)
1 x 2.54-2P terminal

Applications

Smart home control
IoT projects
Access control systems
Industrial control

Specifications

Specification	Parameters
SoC	ESP32-S3 (Xtensa LX7), 8MB Flash, Wi-Fi, OTG, CDC
Flash	8MB
Wide voltage input range	DC 6~36V
Screen driver	GC9A01 1.28 Inch 240 x 240px
Touch driver	FT3267
RFID	WS1850S @Tag operating frequency: 13.56 MHz, ISO/IEC 14443 Type A/Type B protocol
Encoder	Resolution: 16 positions, 64 pulses/revolution
Buzzer	80dB
Battery connector specs	1.25mm-2P
Sleep current	USB powered: DC-5V@6.84mA (LDO power consumption) Battery only: DC-4V@6uA
Operating current	USB powered: DC-5V@88.19mA Battery only: DC-4V@100mA
Operating temperature	0 ~ 40°C
Product Size	51.0 x 51.0 x 32.3mm
Product weight	46.4g
Package dimensions	71.9 x 71.9 x 57.4mm
Gross weight	61.0g

Learn

Power On/Off

Power On: When there is no external USB power supply (battery only), the device can be woken up by pressing the "WAKE" button or by an IRQ signal triggered by the RTC timer. After waking up, the HOLD (GPIO46) pin must be set to high (1) during program initialization to maintain power, otherwise the device will re-enter sleep mode.
Power Off: Similarly, when there is no external USB power supply (battery only), the device can be turned off by pressing the RST button or by setting the HOLD (GPIO46) pin to low (0) in the program.

Download Mode

To enter download mode, hold the G0 button on the StampS3A before powering on, then release it after power is applied.
schematics

Dial v1.1 Lithium Battery Expansion Interface

Schematics

Dial v1.1 Schematics PDF

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PinMap

PORT.A (Red)

StampS3A	G15	G13	5V	GND
M5Dial(PORT.A)	SCL	SDA	VCC	GND

PORT.B (Black)

StampS3A	G1	G2	5V	GND
M5Dial(PORT.B)	IN	OUT	VCC	GND

I2C Sensor (RTC8563 & WS1850S)

StampS3A	G12	G11	G8	G10	G3
RTC8563	SCL	SDA
WS1850S(RFID)	SCL	SDA	RST	IRQ
Buzzer					beep

ENCODER

StampS3A	G40	G41	VCC	GND
ENCODER	B	A	5V	GND

Screen Driver (GC9A01-SPI) & Touch Driver

StampS3A	G4	G5	G6	G7	G8	G9	G11	G12	G14
GC9A01	LCD_RS	LCD_MOSI	LCD_SCK	LCD_CS	LCD_RESET	LCD_BL
FT3267							TP_SDA	TP_SCL	TP_INT

Model Size

Datasheets

Softwares

Arduino

Dial v1.1 Arduino Library

Easyloader

Easyloader	Download Link	Notes
Dial v1.1 User Demo Easyloader	download	/
Dial v1.1 Knob Panel Demo Easyloader	download	/

ESP-IDF

Video

Dial v1.1 Introduction Video

Dial v1.1 Product Introduction and Case Showcase

Product Comparison

Comparison Item	Dial v1.1	Dial
Core Module	StampS3A	StampS3
Antenna Design	Optimized design, stronger signal	Standard design
StampS3A module Boot button	Optimized button feel, buttons use 4.0 x 3.0 x 2.0mm specs	Button specs 2.6 x 1.6 x 0.55mm
Power Consumption	Optimized for lower power consumption	Standard design