RS-485采用平衡发送和差分接收，因此具有抑制共模干扰的能力-RS-485 uses balanced differential transmit and receive, so has the ability to suppress common mode interference

RS-485采用平衡发送和差分接收，因此具有抑制共模干扰的能力。加上总线收发器具有高灵敏度，能检测低至200mV的电压，故传输信号能在千米以外得到恢复。-RS-485 uses balanced differential transmit and receive, so it has the ability to suppress common mode interference. Plus bus transceiver with high sensitivity, can detect vo

STM32外接旋转编码器（EC11），外部中断方式识别出正反转，响应速度优良，无丢步现象，无需延时滤波。在强干扰环境下测试正常。注意是仪器仪表面板常见的那种编码器，不是电机测速的那种。(STM32 Read Encoder (EC11), external interrupt mode to recognizes positive and negative rotation, response speed is excellent, no step loss, no delay use. The