M5Stack Dial v1.1

The M5Stack Dial v1.1 is a high-performance, multifunctional ESP32-S3 development board that has been fully upgraded from the original Dial.

New version v1.1! 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 optimised to improve wireless communication performance and user interaction experience.

The M5Dial is equipped with a 1.28′ 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. It’s powered and programmed via USB-C.

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.

USB-C cable not included.

Features

• Round 1.28′ TFT touch screen
• StampS3A 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
  • PlatformIO

Specifications

SoC	ESP32-S3FN8 (Xtensa LX7), 8MB Flash, Wi-Fi, OTG, CDC
Flash	8MB
Wide voltage input range	DC 6~36V
Screen driver	GC9A01
	1.28′ 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

Resources

• Product Wiki

Tutorials

• Arduino Library
• UiFlow2 Quick Start
• Espressif’s Board Support Packages
• ESP-IDF User Demo
• ESP-IDF Demo

Documentation

• Schematic
• BM8563 datasheet
• WS1850S datasheet
• DC Power Terminal Specifications
• Lithium Battery Connector

Package Contents

• 1x M5Stack Dial V1.1
• 1x L-shaped 1.5mm hex wrench (compatible with M2 screws)
• 1x 2.54mm 2-pin terminal