Design and Implementation of FPGA Based Environmental Protection Device for PCB Board

摘要

This paper introduces a kind of high efficiency, safety and low cost PCB board etching device which is suitable for the university laboratory, the scientific research unit and the small electronic enterprise based on FPGA. The system uses FPGA as the main controller, the temperature of the solution is measured by DS18B20, the concentration of the solution is monitored by the PH probe, the heating time can be set, the TFT touch screen is used as the man-machine interface, and the operation is simple. This system to replace sodium persulfate as ferric chloride etchant, not only clean and non-toxic, and has certain application value.