In simple terms, it is to scan the circuit board to be copied first, record the detailed component location, and then remove the component to make it into a material list (BOM) and arrange the material procurement. Treatment to the PCB board diagram file, and then send the PCB file to the production plate. After the board is made, the purchased components are welded to the PCB board made, and then the circuit board can be tested and debugged.

　　The specific technical steps are as follows:

　　The first step is to get a PCB. First, record the models, parameters, and positions of all components on the paper on the paper. It is best to take a picture of two component positions with a digital camera. Many PCB circuit boards, the more advanced the diodes, the two pole trigelines, are not paid to see.

　　The second step is to remove all devices and remove the tin in the PAD hole. Wash the PCB with alcohol, and then put it in the scanner. When scanning, you need to adjust the pixels of the scanning slightly to get a clearer image. Then use the water gauze paper to polish the top and bottom layers slightly, polish the copper film, put it in the scanner, start the Photoshop, and use the colored mode to scan the two layers separately. Note that PCB must be placed horizontally and vertical in the scanner, otherwise the image of scanning will not be used.

　　The third step is to adjust the contrast of the canvas and the lightness, so that the part of the copper film is strongly contrasting and the part of the copper film is strong, and then turn the second diagram into black and white, check whether the lines are clear, if it is not clear, repeat this step. If you are clear, save the graph into the black and white BMP format file Top BMP and Bot BMP. If you find that the graphic is a problem, you can use Photoshop to repair and correct it.

　　The fourth step is to turn the files of the two BMP formats to the Protel format file, and adjust the two layers in the propel, such as the position of the two layers of PAD and VIA. If there is a deviation, repeat the third step. Therefore, the PCB copy plate is a very patient job, because a small problem will affect the degree of matching after the quality and the copy of the board.

　　The fifth step is to convert the TOP layer's BMP to TOP PCB. Pay attention to convert to the Silk layer, that is, the yellow layer, and then you can place the device according to the drawing of the second step in the TOP layer. Delete the Silk layer after painting. Repeat until all the layers are drawn.