Universal E-Paper Driver Board With WiFi / Bluetooth SoC ESP32 Onboard, Supports SPI E-Paper Raw Panels, E-PAPER ESP32 DRIVER BOARD, Comes with roid APP An To Display Images On E-Paper From PC / Smart Phone Via WiFi / Bluetooth<br> Features At A Glance: -Paper ESP32 Driver Boardis a wireless solution for refreshing e-Paper display content, suitable for applications such as: supermarket price tag, e-Card, serial port monitoring, etc. Onboard ESP32, supports For development<br> Provides roid APP, allows to refresh display content via Bluetooth Provides HTML host code, allows to refresh display content via remote webpage, suitable for Internet applications Supports Floyd- dithering algorithm, more color combinations, better shadow rendering for the image<br> Supports popular image formats: BMP, JPEG, GIF, PNG, etc.<br> Comes with development resources manual<br> Specifications:<br> WIFI PROTOCOL: 802.11b/g<br> BLUETOOTH PROTOCOL: Bluetooth 4.2,including traditional BR/, low power<br> INTERFACE: 3-wire SPI, 4-wire SPI (default)<br> OPERATING VOLTAGE: 5V<br> OPERATING CURRENT: 50mA - 150mA<br> LOW POWER CURRENT: Less than 2mA (cut off power supply for CP2102)<br> DIMENSIONS: 29.46 x 48.25mm<br> Transmitting Image Via Bluetooth<br> Comes With roid APP, Easy To Use<br> for reference only, e-Paper display is NOT included.<br> Resources for different product , please check the page to confirm the actually provided resources.<br> Color: Blue<br> Material: PCandmetal<br> Package Contents:<br> 1 x Universal e-Paper ESP32 Driver Board<br> Only the above package content, other products are not included.<br> Note: Light reflection different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is and/- 1-3cm.