- Remove extraneous components from the breadboard.
- Your resistors appear to be 1k not 10k.
- The schematic doesn’t seem to match the breadboard switch wiring.
- Did that sketch produce that Serial output ?
- Use a 100nF ceramic de-coupling capacitor.
- Supply us with an all encompassing schematic.
- Is the register being powered by 5v or 3V3 ?
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