What is a rotary screen?

Therotaryscreenis an intelligent interactive device that usually consists of acircular knoband a display. The knob can be rotated to control various functions, while the display is used to display relevant information.

ESP32 Display – 2.1inch rotaryscreen, uses high-performanceESP32-S3chip, equipped with 32-bit dual-core chip. The maximum clock frequency reaches 240MHz, with strong performance and easy to handle complex tasks.

Supports2.4G WiFi and BLE low-power Bluetooth, to achieve reliable wireless communication, easily connect to theInternet, suitable forsmart home, industrial control, portable devices and other scenarios.

Supportscapacitive touch operationandknob input, the knob supportsclockwise, counterclockwise rotationandfull press operation, smooth feel, and various interaction methods.

The5V charging interfacesupports both power supply and program burning, and is also equipped with three expansion interfaces:UART, I2C, and FPC, to meet various development needs.

It supportsArduino IDE, Espressif IDF, Lua RTOS,Home Assistant/PlatformIO/Micro Python, and supports theLVGL library; you can design the UI interface yourself. It is an ideal platform for DIY projects like amechanical keyboard knob.

ESP32 Display – 2.1inch rotaryknob screen is not just an interactive module, but an intelligent interaction solution that combines high performance, multi-function, and ease of use. Whether you are an IoT developer, smart home enthusiast, or professional, you can find an efficient tool that meets your needs.

Self-developed by Elecrow with exclusive design.

Rotary input with smooth feel

Support multiple development environments

Compatible with LVGL graphics library

Application Scenarios

Details Overview

Feature

• Interaction mode: supports knob input, the knob supports clockwise, counterclockwise rotation and full press operation, and can adjust volume, brightness, etc.
• Touch function: supports capacitive touch, sensitive operation, and provides a smooth user experience.
• High-performance main control: equipped with a 32-bit dual-core ESP32-S3 chip, equipped with 8M PSRAM and 16M flash memory, and the maximum clock frequency is 240MHz.
• Wireless communication: supports 2.4G WiFi and BLE low-power Bluetooth to achieve data exchange and remote control between devices.
• Expansion interface: equipped with a 5V charging interface, supports power supply and program burning; provides three expansion interfaces: UART, I2C and FPC.
• Low power design:supports low power mode, suitable for smart home appliances and portable devices.
• Multi-language development:supports Esphome-homeassistant/PlatformIO/Micro Python, and also supports LVGL library

Who Needs This?

Makers/open source hardware enthusiasts: DIY smart home controllers, light regulators, desktop instruments, custom input devices, etc.

Home appliance or IOT manufacturers:develop customized control equipment, shorten product design cycle, intend to mass produce, etc.

Education and training institutions: provide teaching kits for courses related to embedded systems, the Internet of Things, and UI design, which are easy for students to get started and intuitive to operate.

Specification

Why Choose Us?

As an industry-leading equipment manufacturer for 11 years, we rely on our independently developed core technology and the production strength of our factories to ensure that every product has precise quality control from design to manufacturing, and is both reliable and innovative. We provide online customer service support to answer your questions at any time, making the whole process worry-free. At the same time, we provide customized solutions to accurately meet your personalized needs. Choosing Elecrow means choosing safety, efficiency and professionalism.

CrowPanel 2.1inch-HMI ESP32 Rotary Display

Data Sheet