The complete steps of PCB copy board are as follows:
The first step is to get a PCB, first record on paper the type, parameters, and location of all the meta parts, especially the diode, the direction of the three machine tubes, and the direction of the IC gap. It is best to use a digital camera to take two pictures of the location of the components.
Step 2: Remove all devices and remove the tin from the PAD holes. Clean the PCB with alcohol, then put it into the scanner, start POHTOSHOP, sweep the silkscreen surface in color and print it out for backup.
Step 3: Lightly sand the TOP LAYER and BOTTOM LAYER layers with water gauze paper until the copper film is shiny, put it into the scanner, start PHOTOSHOP, and sweep in the two layers separately with color. Note that the PCB must be placed horizontally and vertically in the scanner, otherwise the scanned image will not work.
Step 4, adjust the contrast of the canvas, light and darkness, so that the part with copper film and no copper film part of the contrast is strong, and then turn the sub-image to black and white, check whether the lines are clear, if not, repeat this step. If clear, save the figure as black and white BMP format files TOP.BMP and BOT.
Step 5, convert the two BMP format files to PROTEL format files respectively, and call in the two layers in PROTEL, if the position of PAD and VIA over the two layers basically overlap, it shows that the first few steps are well done, if there is deviation, repeat step 3.
BMP into TOP.PCB, pay attention to the SILK layer, that is, the yellow layer, then you trace the lines in the TOP layer is, and according to the second step of the drawing to place the device. After drawing the SILK layer will be deleted.
BMP to BOT.PCB, pay attention to the SILK layer, that is, the yellow layer, and then you trace the lines in the BOT layer is it. After drawing the SILK layer will be deleted.
PCB and BOT.PCB into PROTEL, combined into one figure is OK.
Step 9, use a laser printer to print the TOP LAYER, BOTTOM LAYER, respectively, to transparent film (1:1 ratio), the film onto that PCB, compare whether there is a mistake, if not, you’re done.
