Adafruit
M5Stack Dial - ESP32-S3 Smart Rotary Knob with 1.28" Touchscreen
· MPN: ADA5966
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$122.00
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Add a cool touch-screen rotary dial to your next build with the M5Stack M5Dial. The M5Dial integrates the necessary features and sensors for various smart ho...
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Add a cool touch-screen rotary dial to your next build with the M5Stack M5Dial. The M5Dial integrates the necessary features and sensors for various smart home control applications as a versatile embedded development board. It features a 1.28-inch round TFT touchscreen, rotary encoder, RFID detection module, RTC circuit, buzzer, and under-screen 'selection' button, enabling users to easily implement various creative projects.
The main controller of M5Dial is M5StampS3, a micro module based on the ESP32-S3 chip known for its high performance and low power consumption. It supports Wi-Fi and various peripheral interfaces such as SPI, I2C, UART, ADC, and more. M5StampS3 also comes with 8MB of built-in Flash, providing sufficient storage space for users.
The standout feature of M5Dial is its rotary encoder, which accurately records the position and direction of the knob, delivering a better interactive experience. Users can adjust settings such as volume, brightness, and menu options using the knob or control home applications like lights, air conditioning, and curtains. The device's built-in display screen displays different interaction colors and effects.
With its compact size and lightweight design, the M5Dial is suitable for various embedded applications. Whether controlling home devices in the smart home domain or monitoring and controlling systems in industrial automation, M5Dial can be easily integrated to provide intelligent control and interaction capabilities.
M5Dial also features RFID detection, enabling the recognition of RFID cards and tags operating at 13.56MHz. Users can utilize this function for applications such as access control, identity verification, and payments. Furthermore, the M5Dial has an RTC circuit to maintain accurate time and date. Additionally, it includes an onboard buzzer and a physical button for device sound prompts and wake-up operations.
M5Dial provides versatile power supply options to cater to various needs. It accommodates a wide range of input voltages, accepting 6-36V DC input. Additionally, it features a battery port with a built-in charging circuit, enabling seamless connection to external Lithium batteries. This adaptability allows users to power M5Dial via USB-C, the DC interface, or an external battery for on-the-go convenience. M5Dial also reserves two PORTA and PORTB interfaces, supporting the expansion of I2C and GPIO devices. Users can connect various sensors, actuators, displays, and other peripherals through these interfaces, adding more functionality and possibilities.
Features
- Circular TFT touchscreen
- M5StampS3
- Encoder
- RFID
- 6-36V voltage input
- Interface extension: reserved PORTA and PORTB interfaces
- Programming platforms: Arduino, UIFlow, and ESP-IDF
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- encoder
- A device attached to a motor or shaft that reports movement, such as rotation steps or position. In a pump system, an encoder can help measure or control how much the motor has turned, which affects how repeatable the watering amount can be.
- ESP-IDF
- ESP-IDF is Espressif’s official software development framework for ESP32-family chips. It gives more direct control over the hardware than beginner-style environments, which can help with advanced features like Wi-Fi, Bluetooth, audio and power management.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- RTC
- A Real-Time Clock keeps track of time even when the main processor is asleep or powered down, usually with a small backup battery. It matters for data logging and tracking projects that need accurate timestamps.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- TFT
- A thin-film transistor display is a common type of colour LCD used for graphics screens. Knowing a product is for TFTs helps you check that the driver board matches the display’s connector, resolution, backlight, and signalling method.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
- USB-C
- A modern reversible USB connector used for power and data connections. On this product it matters because it can connect directly to a computer as well as to a microcontroller project.
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