上传的一份以前做过的光学触控屏的原理图，基于STM32+OV7740架构，实现对两个触控的点精确捕捉，可支持42至65寸两点触控屏-Upload a done before the schematic diagram of the optical touch screen, framework based on STM32+OV7740, accurately capture of two touch points, 42-65 inch two points touch screen

STM32最小系统及相应外围电路的设计原理图，包含串口、网口、sd卡、触摸屏等模块-STM32 minimum system and the corresponding peripheral circuit design schematics, including serial, Ethernet port, sd card, touch screen and other modules

CVT 70寸红外触摸屏，具有抗光以及多点触摸的功能, STM32平台，USB接口。-CVT 70-inch infrared touch screen with anti-light and multi-touch functionality, STM32 platform, USB interface.

STM32的串口2 与威纶通触摸屏通信程序-STM32 2 serial communication program with weinview touch screen.