fenghanqing5的专栏

使用STM32的CAN部件，配置完成基本的主机和从机功能，可以实现互传数据。

opencv下的摄像头标定程序，使用棋盘完成，角点数6×9

基于OpenCV环境下的人脸识别程序，使用Boost筛选式级联分类器

产生负电压的芯片数据手册，电路简单 The LT1054 is a monolithic, bipolar, switched-capacitor voltage converter and regulator. The LT1054 provides higher output current than previously available converters with significantly lower voltage losses. An adaptive switch driver scheme optimizes efficiency over a wide range of output currents. Total voltage loss at 100mA output current is typically 1.1V. This holds true over the full supply voltage range of 3.5V to 15V. Quiescent current is typically 2.5mA.