PCB circuit board copying method and steps PCB circuit board copying method and steps Author: Chen Xujun Step 1, get a piece of PCB, first record the model, parameters, and position of all the components on paper, especially the direction of the diode, the three-tube, and the direction of the IC notch. It is best to take two photos of the position of the components with a digital camera. Step 2, remove all the components and remove the tin in the PAD hole. Clean the PCB with alcohol and put it in the scanner. When scanning, the scanner needs to slightly increase the scanning pixels to get a clearer image. Start PHOTOSHOP and scan the silk screen surface in color. Save the file and print it out for later use. Step 3, use water gauze paper to lightly polish the TOP LAYER and BOTTOMLAYER layers until the copper film is shiny, put it in the scanner, start PHOTOSHOP, and scan the two layers in color. Note that the PCB must be placed horizontally and straight in the scanner, otherwise the scanned image cannot be used, and save the file. The fourth step is to adjust the contrast and brightness of the canvas so that the part with copper film and the part without copper film have a strong contrast. Then convert the second image to black and white and check whether the lines are clear. If not, repeat this step. If it is clear, save the image as black and white BMP format files TOP.BMP and BOT.BMP. If you find that there is a problem with the graphics, you can use PHOTOSHOP to repair and correct it. The fifth step is to convert the two BMP format files into PROTEL format files respectively, and call two layers into PROTEL. If the positions of the PAD and VIA of the two layers basically overlap, it shows that the previous steps have been done well. If there is a deviation, repeat the third step. Sixth, convert the BMP of the TOP layer to TOP.PCB. Note that it must be converted to the SILK layer, which is the yellow layer. Then you can trace the lines on the TOP layer and place the components according to the drawing in the second step. Delete the SILK layer after drawing. The seventh step is to convert the BMP of the BOT layer to BOT.PCB...
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