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Materials:
- Laser printer
- Solution of ferric chloride
- Tin liquid / Liquid Tin (optional)
- Photo paper / supreme paper (see below for link)
- Sand paper grit 600
- Iron
- Drill 1/32 + Dremel

Go see my Youtube video: Faire un Circuit Imprimé / Make a PCB (Toner Transfer)

Making a printed circuit board can seem complicated, but with the technique I have found, you can make the professional circuit in less than 1 hour. It is quick, but well done. It takes only a bit of equipment and the proper technique.

To begin, you must make your circuit to the computer (black and white). To do my circuit, I use the "Fritzing". This software is really useful for all kinds of circuits. You can make them from the test plate (breadboard), of a schema or a circuit. After selecting your preferred method, the system does this automatically for your other circuits. He also auto automatic routing! This software is free on the Web! To download click on the following link: http://fritzing.org/download/

Then the second step is to print it. It is very important to print it with the right kind of paper and the laser. For printing, I suggest you to schedule your printer in black and white format with print quality higher. The choice of paper, you do some testing to find the right. Me, I use supreme paper, this is the photo paper. It is important that it is paper and not cardboard picture. The ideal is semi-gloss photo paper. Here is the link: http://www.staples.ca/fr/Staples-Papier-photo-laser-couleur-Supreme-8-po-x-11-po-lustre/product_651611_2-CA_2_20001

For the third step, take a copper plated plastic plate and cut it to the correct size. Once cut, remove oxidation by sanding it with a 600 grit sand paper. You have to sand the sides and corners for the solution ferric chloride has more to facilitate all remove copper from the plate.

Thereafter, you need to transfer the ink of your circuit, that you printed on photo paper, on your map of copper. The principle is simple. It is necessary to heat the ink to such an extent that it could paste on copper. You just just take an iron ironing board and your plate to heat up. You place your circuit that you have printed on your plate and you heat it. If you want it to work well, heat for about 5-10 minutes by pressing on the corners.

Afterwards, wait your plate to cool down and soak the in warm water to take off your paper (5-10 minutes according to the) size of the circuit). After 2 minutes in water, remove a first layer of paper so the water penetrates well into the paper. I suggest you rub a little with your fingers to remove the rest of the paper and when there is to much, I suggest you to use a toothbrush. With the brush, you have less chance to break your tracks.

With a permanent pen, edit your circuit in the footsteps that missing ink or that the tracks were damaged.

Subsequently, place your circuit in the ferric chloride so that any copper around your connections disappear. You must make a continuous iron chloride movement so that it works well. This step you will gradually between 20 to 40 minutes according to the number of times you have used the product. A pot of approximately 500 mL can be used 3 - 6 times.

When that it remains only the copper on your circuit, sand it with 600 grain sandpaper so that the ink disappears. Once done, drill your holes with a very fine Dremel bit so that your components fit well. I suggest a 1/32 bit.

Optional: Pour the solution of liquid Tin into a dish and insert your circuit. After 3-5 minutes you can remove it. This product will protect your system against oxidation and will you facilitate the weld.

Then align your silksceen on the back of your circuit. For align, I suggest you get over a lamp. To burn on the circuit, heat your paper with your iron. As you did for your tracks. Once your paper heat, soak it in water for 10 minutes. After 2 minutes, remove the first layer of paper and soak it another 5-10 minutes.

Scrub with a brush tooth to remove the extra paper. And behold, your circuit is done!

For the last step, just simply weld your parts in the right places! :)

 Chaser 10 LEDs with a 555 Timer and 4017 

Go see my Youtube video: Faire un Circuit Imprimé / Make a PCB (Toner Transfer)