{"product_id":"esp32-s3-4-2-inch-rlcd-development-board-300x400-resolution-xiaozhi-ai-voice-interaction-wifi-bluetooth-5-dual-mode-communication-with-lcd-display","title":"ESP32-S3 4.2 Inch RLCD Development Board 300x400 Resolution XIAOZHI AI Voice Interaction WIFI Bluetooth 5 Dual-mode Communication with LCD Display","description":"\u003cdiv id=\"specification\"\u003e\u003c\/div\u003e\u003cdiv id=\"specification_end\"\u003e\u003c\/div\u003e\u003cp\u003e\u003cb\u003e\u003cspan style=\"font-size: 18px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\u003cspan style=\"font-size: 18px;\"\u003eSpecification:\u003c\/span\u003e\u003c\/b\u003e\u003cbr\u003eProduct Name: ESP32-S3 4.2inch RLCD Development Board\u003cbr\u003eMCU: ESP32‑S3 dual‑core Xtensa LX7, Wi‑Fi 2.4 GHz + Bluetooth 5\u003cbr\u003eDisplay: 4.2 inch reflective LCD, black \u0026amp; white, 300 × 400 pixels\u003cbr\u003eMemory: 16 MB Flash, 8 MB PSRAM\u003cbr\u003eSensors \u0026amp; Chips: SHTC3 temperature \u0026amp; humidity sensor, PCF85063 RTC\u003cbr\u003eAudio: Dual microphones for audio capture, onboard audio codec (I2S), 2‑pin speaker output\u003cbr\u003eStorage: TF (micro‑SD) card slot\u003cbr\u003eInterfaces: 20‑pin DIY expansion header (GPIO \/ I2C \/ I2S \/ UART \/ ADC \/ power), USB Type‑C for power \u0026amp; programming\u003cbr\u003eButtons: BOOT, PWR, user KEY (programmable)\u003cbr\u003ePower Supply: USB Type‑C or single 18650 lithium battery holder onboard\u003cbr\u003eSupported Platforms: ESP‑IDF, ArduinoIDE and other mainstream ESP32 development environments\u003cbr\u003eBoard Size (approx.): 92.5 × 70.1 × 13.5 mm (with case \u0026amp; stand, refer to drawing)\u003cbr\u003eWorking Mode Examples: clock, calendar, weather display, AI assistant front‑end, music player, information screen, etc.\u003cbr\u003e\u003cbr\u003e\u003cb\u003e\u003cspan style=\"font-size: 18px;\"\u003eFeatures:\u003c\/span\u003e\u003c\/b\u003e\u003cbr\u003e1. 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.\u003cbr\u003e2. 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.\u003cbr\u003e3. Rich hardware resources: 16 MB Flash, 8 MB PSRAM and TF card slot give enough space for complex applications, fonts, images and audio files.\u003cbr\u003e4. All‑in‑one desktop form factor: integrated 18650 battery holder, side USB‑C port and foldable acrylic stand allow direct use on the desk as a finished gadget.\u003cbr\u003e5. Multiple connectivity options: Wi‑Fi, Bluetooth 5 and full GPIO\/I2C\/I2S\/UART\/ADC out let you add sensors, relays, lights and more for IoT prototypes.\u003cbr\u003e6. Friendly for beginners \u0026amp; makers: works with ArduinoIDE and ESP‑IDF, example uses include e‑paper‑style clock, weather station, calendar, countdown timer and music player.\u003cbr\u003e\u003cbr\u003e\u003cb\u003e\u003cspan style=\"font-size: 18px;\"\u003ePackage Includes:\u003c\/span\u003e\u003c\/b\u003e \u003cbr\u003e\u003cb\u003eOption A-With Battery\u003c\/b\u003e\u003cbr\u003e1 x ESP32‑S3 Development Board \u003cbr\u003e1 x Rechargeable 18650 Lithium Battery\u003cbr\u003e1 x 2PIN Speaker\u003cbr\u003e2 x Acrylic Stand \u003cbr\u003e1 x Screwdriver\u003cbr\u003e\u003cbr\u003e\u003cb\u003eOption B-Without Battery\u003c\/b\u003e\u003cbr\u003e1 x ESP32‑S3 Development Board \u003cbr\u003e1 x 2PIN Speaker\u003cbr\u003e2 x Acrylic Stand\u003cbr\u003e1 x Screwdriver\u003c\/p\u003e","brand":"LinkMejor","offers":[{"title":"Default Title","offer_id":49120925516001,"sku":"BG-2052241","price":38.69,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0853\/9317\/8849\/files\/0b65d80a-2825-41a9-9f1e-5d2f31091347.jpg?v=1789397025","url":"https:\/\/ontproduct.com\/products\/esp32-s3-4-2-inch-rlcd-development-board-300x400-resolution-xiaozhi-ai-voice-interaction-wifi-bluetooth-5-dual-mode-communication-with-lcd-display","provider":"IvySource","version":"1.0","type":"link"}