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MakeCircuitBoard

Page history last edited by PBworks 14 years, 6 months ago

MakeCircuitBoard - PrintedCircuitBoards

First identify a schematic for the circuit. Using one of the project books will get you a circuit that is pretty close. Online circuits can be pretty complicated and often need to be simplified. Prototyping it on a breadboard helps to get your concept to work in reality.

 

Refine the circuit and the schematic. Draw a version of the board trace in pencil on paper. You can also use EaglePcb to work out the trace pattern, but you will have to learn the software, which is not very intuitive. The first version will probably be larger than it needs to be, which will use more board and require more FerricChloride than neccesary. Draw a smaller version of the circuit trace. Place items that need heat sinks near the edges. Label your power connections and other components.

 

Prepare the copper board blank. Find the smallest board that will fit your circuit. Cut the board with a FootShear or TinSnips to the size you need. You will need to prepare the board by scrubbing it with a green potscrubber or a high (600+) grit sandpaper. Using an abrasive on the board removes any protective film that keeps the board from oxidizing and it will provide more surface area for the etchant to act on.

 

Transfer the trace to the board. There are a number of ways to transfer it. You could use a photocopier and photo paper, printout from a web page on photo paper as described on LaserPrinterPcb. Probably the simplest way is to use carbon paper between the design and the board. Trace the paper with a pencil and the carbon will appear on the board. Go over the traces with a fresh sharpie, or a grease pencil should work too.

 

Gootee, down the page... - http://www.fullnet.com/u/tomg/gooteepc.htm

5 Bears, good step by step photos - http://www.5bears.com/pcb.htm#Printed%20Circuit%20Boards%20for%20the%20Masses

Mike M


- PrintedCircuitBoards

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