Description The Seeed Studio ePaper Driver Board for XIAO is a compact expansion board for low-power ePaper projects built around Seeed Studio XIAO development boards. It provides a 24-pin FPC connector for ePaper panels, a JST battery connector, a built-in ETA9740 charging IC, and a battery power switch, making it suitable for Wi-Fi digital photo frames, dashboards, and battery-powered status displays. The board is designed for the XIAO ecosystem and exposes additional IO for Grove sensors or other controllers, so projects can combine ePaper output with environmental sensing, home automation data, or other embedded inputs. Features Built-in charging IC: Supports efficient and safe battery charging. BAT connector with switch: Provides a JST battery connector and a power switch for easier battery management. 24-pin FPC connector: Connects compatible 24-pin ePaper panels through a 0.5 mm top-contact interface. Extension IO port: Breaks out additional IO for Grove sensors or other controllers. XIAO ecosystem support: Designed for Seeed Studio XIAO series development boards. Specifications ePaper Connector 24-pin 0.5 mm FPC, top contact Battery Charging IC ETA9740 Battery Connector JST 2.0 mm Power Switch Battery power ON/OFF Female Header 7-pin 2.54 mm Power Supply 3.7V Li-battery or Seeed Studio XIAO Compatible Controller Seeed Studio XIAO series Expansion Interface IO breakout for Grove sensors or other controllers Hardware Overview 24-pin FPC connector: Interface for the ePaper display panel. JST BAT connector: Battery connection with power-switch control. XIAO socket: Socket for connecting a Seeed Studio XIAO development board. IO breakout: Breakout interface for Grove sensors or other controllers, such as Arduino UNO or Raspberry Pi. Power switch: Battery power control for portable projects. Pinout Driver Board Pin XIAO Pin RST D0 CS D1 DC D3 BUSY D2 SCK D8 MOSI D10 3V3 3V3 GND GND Compatibility The official wiki lists multiple compatible 24-pin ePaper display options for XIAO projects, including 1.54-inch, 2.13-inch, 2.9-inch, 4.2-inch, 4.26-inch, 5.65-inch, 5.83-inch, and 7.5-inch panels. Larger ePaper panels may require a XIAO board with enough RAM and flash for the selected display buffer and graphics library. Applications Smart home dashboard for weather, calendar, and device notifications Energy monitoring display for smart meter data Security alert panel for sensor events Smart thermostat display for temperature and humidity Wi-Fi digital photo frame or low-power information display Product List 1 x ePaper Driver Board Other Content Display Not Included This breakout board does not include an ePaper display; the display must be purchased separately. Setup Reference Resources XIAO ePaper Driver Board Wiki Documentation XIAO ePaper Driver Board Schematic PDF Seeed Arduino LCD Library for ePaper Examples Image2Lcd Conversion Tool for ePaper Images FAQ Does this board include an ePaper display? No. The official wiki notes that the ePaper display must be purchased separately. Which XIAO boards can be used with this driver board? It is designed for the Seeed Studio XIAO ecosystem. Choose a XIAO board with enough RAM and flash for the target ePaper display size and graphics workload. What connector does it use for the ePaper panel? It uses a 24-pin 0.5 mm top-contact FPC connector for compatible ePaper panels. Can it run from a battery? Yes. It supports a 3.7V Li-battery through the JST connector and includes a power switch plus the ETA9740 charging IC. What is the IO breakout for? The IO breakout can connect Grove sensors or other controllers, allowing an ePaper project to show sensor readings, status data, or automation information. Which software resources are useful for development? The official wiki references the Seeed Arduino LCD library for examples and the Image2Lcd tool for preparing bitmap images for ePaper output.
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