GROVE LCD Display 16x2 (found here but i scaled it.) GROVE Sound sensor. GROVE Touch sensor. GROVE Touch sensor v1.1. The parts have been designed to enable users to quickly and easily add the GROVE ...

So number of pins required for data exchange and backlight control shrinks from ~10 to 2, relieving IOs for other challenging tasks. Besides, Grove - LCD RGB Backlight supports user-defined characters ...