Universal E-Paper Driver Board with WiFi and Bluetooth SoC ESP32 onboard, supports various SPI e-Paper raw panels. This e-Paper ESP32 driver board comes with an Android app to display images on e-Paper from PC or smartphone via WiFi or Bluetooth.Features at a glance: - Wireless solution for refreshing e-Paper display content, suitable for applications such as supermarket price tags, e-Cards, serial port monitoring, etc. - Onboard ESP32 for development support - Includes Android app for Bluetooth-based display updates - Provides HTML host code for remote webpage control, ideal for Internet of Things applications - Supports Floyd-Steinberg dithering algorithm for enhanced color combinations and improved image shadow rendering - Compatible with popular image formats including BMP, JPEG, GIF, PNG, and more - Comes with development resources and user manual Specifications: - WiFi Protocol: 802.11b/g - Bluetooth Protocol: Bluetooth 4.2 (supports BR/EDR and low energy) - Interface: 3-wire SPI, 4-wire SPI (default) - Operating Voltage: 5V - Operating Current: 50mA to 150mA - Low Power Current: Less than 2mA (with CP2102 power disconnected) - Dimensions: 29.46 x 48.25mm Image transmission via Bluetooth with included Android app for easy operation. E-Paper display not included. Development resources vary by product; please verify provided resources on the product page. Color: Blue Material: PC + metal Package Contents: 1 x Universal e-Paper ESP32 Driver Board Note: Light reflection and differences in display settings may cause slight variations between the item color in the image and the actual product. Measurement may vary by +/- 1-3cm.