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How to make quality printed circuit boards at home



Any electronic device requires connecting a bunch of parts. Of course, you can solder the device on the circuit board, but at the same time there is a great risk of making a bunch of mistakes, and the device itself will look very dumb. Sticking out in all directions will be appreciated only by fans of trashdesign. Therefore, we will make a printed circuit board!

And to make it easier for you, I made a video lesson on the manufacture of printed circuit boards using the Laser Iron method aka LUT.

The full cycle, from preparing the board with a piece of PCB, to drilling and tinning.

What is needed:
0) Figure of a printed circuit board in electronic form.
1) Laser printer to print a print of the future board. It is desirable that the printer has a direct path capability - printing with minimal bending of paper. I have a Samsung ML1520. Print to the maximum, without any toner savings!
2) Foil textolite.
3) Lomond 120g / m inkjet photo paper is glossy, single-sided with improved coating. Also good results on Lomond 230g / m glossy paper.
4) Suede brush with metal + plastic pile (optional)
5) Acetone
6) Skin nulevka

The whole process was cut into operations for easy viewing, processing and uploading to the Internet. In the manufacture of the circuit board, between operations, the period of time was a few minutes. Basically, it was spent searching for some cotton wool, acetone or tweezers to grab a hot plate. So you can assume that they go without a break in time to evaluate the speed of manufacturing boards.

1. Preparing the board.


2. Roll the picture.
Our goal is to make a protective pattern on the printed circuit board that will protect the tracks from being etched in a solution of ferric chloride that is aggressive to metals.


3. Remove the paper:
Soaking and tearing paper, cleaning the glossy layer.


4. Etching.
As an etching solution, ferric chloride is used - a hellish thing that eats up almost all metals with a moment. The solution is made from a ratio of 250g of ferric chloride per liter of water. Accuracy is not particularly important here.


5. Toner Removal
The Moor has done the work; the Moor must leave.


6. Drilling holes.


7. Tinning board.


8. What, in the end, happened.