ITEM NAME:Electronic Development Board System Board Core Single Chip Small System BoaSEAU Description: The development board using Micro USB cable supply, compatible with smart phone lines, data lines is simple and easy to get, but not USB Mini line-.The core board schematics (PDF format) and tested source. Burned into the test program, LED flashes, allowing you to detect the core board is working properly. STM8S core board of the main features.