Often people face problem while making a circuit on a bread board. It is a common problem that the circuit may work some time and may not work other time. Most of the time it is the connections on the bread board which creates this problem. Either are connections are not proper or loose or may get damaged while working or carrying the circuit on a bread board. Hence it is always recommended to make the circuit on a PCB once it has been tested on a bread board. This article will explain the process of making a single layer PCB at home with the use of commonly available tools.
A printed circuit board has pre-designed copper tracks on a conducting sheet. The pre-defined tracks reduce the wiring thereby reducing the faults arising due to lose connections. One needs to simply place the components on the PCB and solder them.
- Over Head Projector sheet (known as OHP sheets) or a wax paper
- Laser Printer
- Electric Iron.
- Steel wool.
- Two plastic trays
- Copper board/ PCB (eg: paper phenolic, glass epoxy, FR4, FR10, etc.)
- Black permanent marker.
- Etching solution (Ferric chloride).
- Drill machine.
Prepare a layout of the circuit on any commonly used PCB designing software. A layout is a design which interconnects the components according to the schematic diagram (circuit diagram). Take a mirror image print of the layout on the OHP sheet using a laser printer. Make sure that the design is correct with proper placement of the components.