PCB Technical - QuickPCB2005 color copy board software tutorial

The technical realization process of PCB copy board is simply to scan the circuit board to be copied, record the detailed component location, then remove the components to make a bill of materials (BOM) and arrange the material purchase, empty board is The scanned picture is processed by the copying software QuickPCB2005 to restore to the PCB board drawing file, and then the PCB file is sent to the circuit board factory to make the board. After the board is made, the purchased components are soldered to the made PCB board, and then the circuit is passed through Board testing and debugging can be done.

The specific technical steps are as follows:

The first step is to get a PCB. First, record the model, parameters, and positions of all vital parts on the paper, especially the direction of the diode, the tertiary tube, and the direction of the IC gap. It is best to use a digital camera to take two photos of the location of the vital parts. The current PCB circuit boards are getting more and more advanced. Some of the diode transistors above are not noticed and can't be seen at all.

The second step is to remove all the components and remove the tin in the PAD hole. Clean the PCB with alcohol, and then put it into the scanner. When the scanner scans, you need to raise the scanned pixels slightly to get a clearer image. Then lightly polish the top and bottom layers with water gauze until the copper film is shiny, put them in the scanner, start PHOTOSHOP, and scan the two layers in separately in color. Note that the PCB must be placed horizontally and vertically in the scanner, otherwise the scanned image cannot be used.

The third step is to adjust the contrast, brightness and darkness of the canvas to make the part with copper film and the part without copper film have a strong contrast, then turn the picture into black and white, check whether the lines are clear, if not, repeat this step. If it is clear, save the picture as black and white BMP format files TOP.BMP and BOT.BMP. If you find any problems with the graphics, you can also use PHOTOSHOP to repair and correct them.

The fourth step is to convert the two BMP format files into PROTEL format files, and transfer them into two layers in PROTEL. If the positions of the PAD and VIA on the two layers basically coincide, it indicates that the previous steps have been done well. If there is Deviation, repeat the third step. Therefore, PCB copying is a work that requires patience, because a small problem will affect the quality and the degree of matching after copying.

The fifth step is to convert the BMP of the TOP layer to TOP.PCB, pay attention to the conversion to the SILK layer, which is the yellow layer, and then you can trace the line on the TOP layer, and place the device according to the drawing in the second step. Delete the SILK layer after drawing. Repeat until all the layers are drawn.

The sixth step is to import TOP.PCB and BOT.PCB in PROTEL, and it is OK to combine them into one picture.

The seventh step, use a laser printer to print TOPLAYER and BOTTOMLAYER on transparent film (1:1 ratio), put the film on the PCB, and compare whether there is any error. If it is correct, you are done.

A copy board that is the same as the original board was born, but this is only half done. It is also necessary to test whether the electronic technical performance of the copy board is the same as the original board. If it is the same, it is really done.

Remarks: If it is a multilayer board, you need to carefully polish to the inner layer, and repeat the steps of copying the board from the third to the fifth step. Of course, the naming of the graphics is also different. It depends on the number of layers. Generally, the double-sided copying board requires It is much simpler than multi-layer boards. Multi-layer copy boards are prone to misalignment. Therefore, multi-layer board copy boards must be especially careful and careful (wherein the internal vias and non-vias are prone to problems).

Quickpcb2005 double-sided board copy method:

1. Scan the upper and lower layers of the circuit board and save two BMP pictures.

2. Open the copy board software Quickpcb2005, click "File"-"Open Base Map" to open a scanned picture. Use PAGEUP to zoom in on the screen, see the pad, press PP to place a pad, and see that the line is routed according to PT. Just like a child's drawing, draw it again in this software and click "Save" to generate a B2P file.

3. Click "File"-"Open Base Image" to open another layer of scanned color images;

4. Click "File"-"Open" again, and open the B2P file saved earlier. We see the newly copied board, stacked on top of this picture, one PCB board together, the holes are in the same position, but the wiring is connected different. So we press "Options"-"Layer Settings", turn off the top-level line and silk screen here, leaving only multi-layer vias.

5. The vias on the top layer are in the same position as the vias on the bottom picture. Now we can trace the lines on the bottom layer as we did in childhood. Then click "Save"-the B2P file now has two layers of data at the top and bottom.

6. Click "File"-"Export as PCB File", and you can get a PCB file with two layers of data. You can change the board or output the schematic diagram or send it directly to the PCB factory for production.

Quickpcb2005 multi-layer board copy method:

In fact, the four-layer copy board is to copy two double-sided boards repeatedly, and the six-layer copy board is to copy three double-sided boards repeatedly.... The reason why multiple layers are daunting is that we can't see the internal wiring. How do we see the inner layers of a precision multilayer board? Layer by layer.

There are many methods of layering, such as potion corrosion, tool stripping, etc., but it is easy to separate the layers and lose data. Experience tells us that sandpaper polishing is the most accurate.

When we finish copying the top and bottom layers of the PCB, we usually use sandpaper to polish the surface layer to show the inner layer; sandpaper is ordinary sandpaper sold in hardware stores, generally flat PCB, and then hold the sandpaper and rub evenly on the PCB (If the board is small, you can also spread the sandpaper flat, and rub the sandpaper while pressing the PCB with one finger). The main point is to pave it flat so that it can be ground evenly.

The silk screen and green oil are generally wiped off, and the copper wire and copper skin should be wiped a few times. Generally speaking, the Bluetooth board can be wiped in a minute, and the memory stick will take about ten minutes; of course, if you have more energy, it will take less time; if you have less energy, it will take more time.

Grinding board is currently the most common solution used for layering, and it is also the most economical. You can find a discarded PCB board and try it. In fact, there is no technical difficulty in grinding the board, but it is a bit boring.