Seeed Grove Starter Kit for SeeedStudio BeagleBone Green Package Contents: Grove - I2C ADC x 1 Grove - I2C Hub x 1 Grove - Relay x 1 Grove - Buzzer x 1 Grove - OLED Display 0.96 x 1 Grove - Button x 1 Grove - Temperature Sensor x 1 Grove - Sound Sensor x 1 Grove - 3-Axis Digital Accelerometer (±16g) x 1 Grove - Chainable RGB LED x 1