36 lines
1 KiB
Markdown
36 lines
1 KiB
Markdown
---
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id: nsrv
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tags: [electronics]
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created: Tuesday, June 25, 2024
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---
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# Push buttons
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Push buttons are push-to-make switches. This means that they are **on when they
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pressed and off when they are not pressed**. A classic example would be the
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switches on a keyboard.
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Push buttons have four legs that are connected in signal-in and signal-out
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pairs.
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To create a breakable circuit we would connect a signal-in cable to the top left
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at row 23 and a signal-out cable to the bottom-right at row 25.
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_The correct use of a push button where the button breaks the circuit_
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To override the switch functionality and just have the button work as a
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connector we would connect the signal-in to the row 23 input and the row 23
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output.
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_The push button being used as simple connector which does not break the
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circuit:_
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## Related notes
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https://projects.raspberrypi.org/en/projects/button-switch-scratch-pi/1
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