This Development kit designed for SPI E-Paper Display aims to help users to begin constructing our E-paper display with provided source code to create more differentiated solutions. It supports driving E-paper display black-white and three-color (black, white and red/yellow). Already set for E-paper display SIZE 4.2'' P/N NV400300E420#D01 . USB serial port and LED indicator light functions added. DESPI Development kit consist of the development board DESPI-M02 and pin-board DESPI-C02. MCU STM32.