Onboard microSD card holder: connect an external SD card to store pictures or files. supports flexible clocking, multiple power modes, and precise control, enabling multiscenario lowpower operation. performance Xtensa 32bit LX7 dualcore processor: main frequency up to 240 MHz; supports 2.4 GHz WiFi (802.11 b/g) and Bluetooth 5 (LE) with an onboard antenna for reliable wireless connectivity. Onboard 1.47inch LCD screen: 172x320 resolution, 262K color for clear visuals; provides access to most GPIO; includes an integrated fullspeed USB serial port for easy programming and data communication. Onboard memory: 512KB, 384KB ROM, 8MB PSRAM and 16MB Flash for efficient data handling, firmware storage, and responsive operation. Use scenarios Field data logger: store sensor logs and multimedia on the external SD card, while leveraging lowpower modes to extend battery life in remote monitoring, inspection, or research deployments. IoT sensor hub: collect and transmit data over 2.4 GHz WiFi and Bluetooth 5 LE, with local display and USB serial access for setup, testing, and debugging. Portable development and display module: use the 1.47inch LCD for realtime status, GPIO access for peripherals, and USB serial for development workflows on prototyping or demonstrations.