{"product_id":"esp32-s3-4-2-inch-rlcd-full-reflective-display-development-board-supports-wi-fi-ble-dual-mode-communication-without-battery-33507","title":"ESP32-S3 4.2 Inch RLCD Full Reflective Display Development Board Supports Wi-Fi \u0026 BLE Dual-Mode Communication Without Battery, 33507","description":"\u003cbr\u003e1. Features a high-performance Xtensa 32-bit LX7 dual-core processor with a clock speed up to 240MHz\u003cbr\u003e2. Supports 2.4GHz Wi-Fi and Bluetooth 5 (LE) with built-in antennas\u003cbr\u003e3. Includes 512KB SRAM and 384KB ROM, while stack-integrated with 16MB Flash and 8MB PSRAM\u003cbr\u003e4. Features a 4.2-inch full-reflective display with 300 x 400 resolution, offering reflective imaging and eliminating the need for backlighting\u003cbr\u003e5. Equipped with a dual-microphone array enabling audio algorithms like noise reduction and echo cancellation, ideal for precise voice recognition and near-field\/far-field voice wake-up applications\u003cbr\u003e6. Onboard PCF85063 RTC real-time clock and SHTC3 temperature\/humidity sensor for precise RTC time management and environmental monitoring\u003cbr\u003e7. Integrated 18650 lithium battery holder and RTC backup battery holder (requires rechargeable RTC battery), supporting dual-mode operation: main power supply and independent RTC backup\u003cbr\u003e8. Onboard Micro SD card slot for external storage of images or files\u003cbr\u003e9. Two customizable side buttons (KEY and BOOT) for developing user-defined functions\u003cbr\u003e10. Reserved 2 x 8-row female header (2.54mm pitch) for external expansion\u003cbr\u003e\u003cbr\u003eSpecifications\u003cbr\u003e1. Display panel: fully reflective screen\u003cbr\u003e2. Display size: 4.2 inches\u003cbr\u003e3. Display resolution: 300 x 400\u003cbr\u003e4. Gray scale levels: 2\u003cbr\u003e5. Communication interface: SPI\u003cbr\u003e6. Display method: fully reflective\u003cbr\u003e7. Driver IC: ST7305\u003cbr\u003e8. Display colors: black, white\u003cbr\u003e9. Size: about 9.25 x 6.91 cm\u003cbr\u003e\u003cbr\u003ePackaging list:\u003cbr\u003e- ESP32-S3-RLCD-4.2-EN host x 1\u003cbr\u003e- Acrylic stand x 2\u003cbr\u003e- 8-ohm 2W MX1.25 2PIN speaker (forward) 80mm x 1\u003cbr\u003e- Screwdriver x 1\u003cbr\u003e\u003cbr\u003e","brand":"DropKart","offers":[{"title":"33507","offer_id":44044179374168,"sku":"TBD0606699001","price":92.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/3947\/2984\/files\/TBD0606699001.jpg?v=1777339145","url":"https:\/\/dropkartllc.com\/products\/esp32-s3-4-2-inch-rlcd-full-reflective-display-development-board-supports-wi-fi-ble-dual-mode-communication-without-battery-33507","provider":"DropKart LLC","version":"1.0","type":"link"}