Adafruit Terminal Block BFF Add-On for QT Py and Xiao

The Adafruit Terminal Block BFF Add-On for QT Py and Xiao provides easy access to every pin on a QT Py or Seeed Studio Xiao board through convenient screw terminals. This allows fast and secure connections for sensors, actuators, power supplies and other external hardware.

The expansion board includes a STEMMA QT / Qwiic connector for I2C peripherals and supports 3.7V to 4.2V LiPo batteries with integrated charging through the USB connection of the host board. Its stackable design keeps all pins available for additional expansions and accessories within the QT Py and Xiao ecosystem.

Key features

• Screw terminals on every pin
• Double socket headers for additional connections
• STEMMA QT / Qwiic JST-SH connector
• LiPo battery support with charging circuitry
• Automatic USB and battery power switching
• Stackable design without consuming GPIO pins
• No software or code required

Technical specifications

• Terminal pitch: 2.54mm
• Battery voltage: 3.7V-4.2V
• Charge current: 250mA
• Adjustable charge current: 500mA
• Connector: JST-SH STEMMA QT / Qwiic
• Connector: JST-PH battery connector
• Dimensions: 43.2 x 30.3 x 10.7mm
• Weight: 8.5g