ESP32-S3 4.2 Inch RLCD Development Board 300x400 Resolution XIAOZHI AI Voice Interaction WIFI Bluetooth 5 Dual-mode Comm

Specification Product Name ESP32 S3 4 2inch RLCD Development BoardMCU ESP32 S3 dual core Xtensa LX7 Wi Fi 2 4 GHz Bluetooth 5Display 4 2 inch reflective LCD blackwhite 300 400 pixelsMemory 16 MB Flash 8 MB PSRAMSensorsChips SHTC3 temperaturehumidity sensor PCF85063 RTCAudio Dual microphones for audio capture onboard audio codec I2S 2 pin speaker outputStorage TF micro SD card slotInterfaces 20 pin DIY expansion header GPIO I2C I2S UART ADC power USB Type C for powerprogrammingButtons BOOT PWR user KEY programmable Power Supply USB Type C or single 18650 lithium battery holder onboardSupported Platforms ESP IDF ArduinoIDE and other mainstream ESP32 development environmentsBoard Size approx 92 5 70 1 13 5 mm with casestand refer to drawing Working Mode Examples clock calendar weather display AI assistant front end music player information screen etc Features 1 High contrast 4 2 reflective LCD clear black and white display easy to read under strong ambient light perfect for clocks text and simple graphics 2 AI voice interaction ready built in microphones and speaker interface plus Wi Fi make it suitable as a smart assistant terminal for cloud large model applications 3 Rich hardware resources 16 MB Flash 8 MB PSRAM and TF card slot give enough space for complex applications fonts images and audio files 4 All in one desktop form factor integrated 18650 battery holder side USB C port and foldable