• Serial Printing Sensors

Pushbutton State Change

Q: I’m a little confused about the last line lastButtonState = buttonState;.
Why do we make them equal if the states need to be saved separately?

Count Button Presses

When I pressed the button, the buttonPresses count increased rapidly. After I added delay(100), it increased more slowly.

Detecting Peak

PeakValue = highest value in given time

Threshold value can be changed based on the sensor

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threshold = 50

• Sensitive: small changes/noise will easily trigger on
• More frequent, earlier responses (fires early on the rising edge)

threshold = 500

• Less sensitive: triggers only for stronger signals
• Fewer activations; delayed response (waits until the signal exceeds 500)

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