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These days, we see many forms of ready-to-go development platforms such as the Arduino and Raspberry Pi which are primarily SMT component based. Not long ago, if you wanted a similar device you would build it using a copper clad strip board. One manufacturer of these prototype boards is Vero www.
This Instructable documents the 'minimum' tools necessary to create reasonable quality electronic circuits and gives pragmatic construction tips finishing with a practical design exercise. It is assumed all components are low power 3v3 - 5v and are based around 0. Pictured above are typical circuits I have designed in the past using these tools and following this construction process.
Before it can be used, the blank circuit board must be clean. Immaculately clean. No dust, or fingerprints, or specks of oil, and no oxide layer.
Components are generally soldered onto the PCB to both electrically connect and mechanically fasten them to it. Printed circuit boards are used in all but the simplest electronic products. They are also used in some electrical products, such as passive switch boxes.
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The next task is to remove the Key Contact boards from the underside of the keyboard assembly. These are the circuit boards. The suspect key contacts are on the hidden side of the boards and so we have to remove them.
The tracks are 0. Stripboard is used to make up permanent, soldered circuits. It is ideal for small circuits with one or two ICs chips but with the large number of holes it is very easy to connect a component in the wrong place.
Printed circuit boards accumulate dust and they occasionally come into contact with liquids by splashing or soaking. Exposure to these elements gradually corrodes the solder joints, which can damage the circuit. A large number of contaminants can also isolate tiny components on the boardpreventing heat loss and eventually overheating them.
There are a variety of methods that can be used to clean circuit boards depending on the type of board, the type of grime, and experience level and available tools of the person doing the cleaning. You must ask yourself one important question before cleaning a circuit board: "Is having the board clean worth the risk of breaking it in the process? Cleaning a circuit board always involves a risk of damaging the board or the components on it. If the board is already broken and you need to clean it to attempt repairs, the decision is obviously much easier.