Check the listing for details. NanoDLP Shield V1.1 Expansion Board +Boost LED Driver Board. Condition: New. Listed at 14.99 USD. This expansion board is designed for the Raspberry Pi 3B and is used to run NanoDLP’s light-cured 3D printers. The board contains a 9-28V to 5V circuit that provides a maximum of 3A and other interfaces required by NanoDLP.