CrowPanel 1.28-inch HMI ESP32 Rotary Display Hands-on

Elecrow has recently expanded its CrowPanel lineup with two new ESP32-S3-powered rotary displays — a 1.28-inch (240×240) model and a larger 2.1-inch (480×480) variant. Both feature round IPS touchscreens with rotary and press input, designed for makers, IoT developers, and embedded system enthusiasts.

Design and Build Quality

The CrowPanel 1.28-inch rotary display features a compact circular IPS panel enclosed in a combination of aluminum alloy, plastic, and acrylic. It feels sturdy and premium, with a smooth-turning rotary knob that also supports press actions. The display integrates capacitive touch input, offering responsive and accurate control.

The module includes ambient lighting via RGB LEDs, a 5V USB-C power interface, and expansion options through UART, I2C, and FPC connectors. This makes it suitable for integration into various projects — from smart home controls and dashboards to educational kits and industrial prototypes. Despite its small form factor, the display has a polished, ready-to-use finish that feels more like a complete device than a bare development module.

Hardware and Performance

At its core, the display runs on the ESP32-S3R8 chip — a dual-core 32-bit Xtensa LX7 processor clocked at up to 240 MHz. It comes with 512KB SRAM, 8MB PSRAM, and 16MB Flash, providing enough headroom for complex graphics and multitasking. The 1.28-inch IPS display supports a 240×240 resolution with sharp color reproduction and wide viewing angles.

Wireless connectivity includes 2.4GHz Wi-Fi and Bluetooth Low Energy 5.0, enabling reliable remote communication and Home Assistant integration. Power efficiency is also noteworthy; the device supports low-power operation, making it suitable for portable or battery-powered applications.

Features and Usability

The CrowPanel 1.28-inch display supports a range of interaction methods — capacitive touch, rotary input, and full-press operation. Whether rotating the knob to adjust parameters like volume or brightness, or tapping to confirm selections, the experience feels fluid and precise.

One of the standout features is the ambient lighting, which not only enhances aesthetics but can also serve as a functional status indicator.

Elecrow provides multiple development environment options, including Arduino IDE, ESP-IDF, PlatformIO, MicroPython, Lua RTOS, and ESPHome. It also supports the LVGL graphics library and SquareLine Studio for custom UI design.

Real-World Application

Beyond basic control, the display can manage RGB LED strips or serve as a customizable interface for automation projects. The system responds quickly, and both the touch and rotary inputs are consistent across different applications. It’s an excellent tool for creating compact control panels, smart home devices, or interactive IoT dashboards.

Conclusion

The Elecrow CrowPanel 1.28-inch HMI ESP32 Rotary Display is a compact yet powerful interactive display ideal for developers, makers, and IoT professionals. Its combination of touch, rotary, and press input, along with Wi-Fi and BLE support, provides a flexible platform for creative projects and embedded applications.

We particularly appreciate its premium build, versatile connectivity, and strong software ecosystem — especially its compatibility with ESPHome and LVGL. Whether used as a volume control knob, a smart clock, or a custom UI controller, the CrowPanel delivers impressive performance for its price.