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While working on electronics projects, it’s often necessary to test out different capacitance or resistance values as things are moving along. Depending on what you are testing, this can be a tedious process even when using a breadboard. Instructables user [mattthegamer463] recently built a very useful device that would help out in these situations, and would likely be a welcome addition to any … [Read more...]
Here's two input devices you can easily build with materials you already have on hand. To the left, [John] built a 3x3 keypad matrix from paper and tinfoil. The rows and columns are made up of strips of tin foil on the front and back layers of paper. The layers are separated by spongy double-stick tape. A 'keypress' results when the gap between the conductors is compressed with your … [Read more...]
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