使用hx_711AD转换模块对一段未通电的无漆包或者绝缘外皮的导线长度的测量，程序精度在3mm内会有小部分误差。(The hx_711AD conversion module is used to measure the length of an uncharged unpainted or insulated sheath, and the accuracy of the program will have a small part of error in the 3mm.)