Seeed Studio Expansion Board for XIAO with Grove, OLED, I2C, UART, GPIOs

• Quick Prototyping: Easy debug and Reset with RESET button and SWD pin led out to the male header. 0.96” OLED, enables visual data to display without PC serial monitor.
• Rich peripherals: OLED display, RTC, expandable memory space, passive buzzer, user button, on board battery management chip… One board on hand to explore the infinite possibilities of Seeed Studio XIAO series.
• Mini Size: Compact and elegant with only half Raspberry Pi 4 size, perfect for tiny and wearable projects.
• No Soldering Needed: All pins are led out. Convenient plug-and-play Grove connectors support multiple data protocols, including IIC, Uart, and Analog/Digital.
• Circuit Python Supported: Well supports circuit python. Mini SD card slot enables memory space expansion, making it possible to allocate more libraries needed in prototyping and project building.

Rich peripherals on board including:

• OLED display: Visual data display without connecting to PC, which enables debug in a more efficient way, and builds application such as a sensor hub, data monitor system, .etc
• RESET button: No more jumper wire and short circuit, easy reset with just one click.
• SWD debug: SWD pin led out as male pin header, making debugger connection and firmware download much easier.
• High precision RTC: High precision real-time clock with battery backup, enables maintaining accurate time when the main power is turned off.
• Expandable memory: With a MicroSD card slot on the back, no worry about the memory limit any more when adding libraries and using circuit python.
• User button: Besides the RESET button, also provide another user-defined button.
• Passive buzzer: Same passive buzzer on Wio Terminal, with which you could change the PMW frequency to award different beep sound to get a "buzzer music".
• Grove connectors: All pin led out, plug-and-play grove connectors support common data protocols (Grove IIC2, Grove UART1, A0/D0 Grove*1)
• Lipo Battery Charging: JST2.0mm standard lipo battery connector and battery management system, supports both USB and lipo battery power supply, and easy onboard battery recharge.
• 5V servo connector: 5V output led out to male header for 5V servo and sensor connection.