Keep a bath of salty water handy, your salty water should be a 100% saline solution, that means that you cannot dissolve any more salt into the water. Peel the paper off and rub the paper residue from the board with your fingers.Īctually, there are plenty of them. While the copper is still hot, drop it into a hot bath of water. Transfer the image onto the copper with a hot iron (for 3-4 minutes).Print your design on plain paper with a laser printer.The toner acts as an acid resist, meaning that when the board is immersed in acid, the copper that does not have the resist on it, will be etched away by the acid. The toner transfer method is simply about melting the toner from a laser printout onto the copper of your circuit board. I use the free Fritzing designer tool, it's great, has the components that I need, is easy to use and it's free (did I mention that it is free?). You will also need a circuit design program to draw your circuit. I've used the toner transfer and acid etch technique for making the board, but you can use whatever method best suits your skills and budget. 12 x pin headers (cut into 2, 4 and 6 pins).1 x 40mm x 53.5mm single sided copper clad circuit board (FR4).The materials used in this project are pretty few.
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