How would you modify a traffic light simulation to add a pedestrian crossing button that pauses the green light when pressed?

hard📝 Application Q8 of 15

Raspberry Pi - LED and Button Projects

AAdd a second green LED to blink continuously

BUse a GPIO input pin to detect button press and pause green LED output

CIncrease the sleep time for green LED without input detection

DRemove the yellow light phase

Step-by-Step Solution

Solution:

Step 1: Understand pedestrian button function
The button should be detected as input to control the green light timing.
Step 2: Implement input detection and pause
Using a GPIO input pin to detect button press allows pausing the green LED output safely.
Final Answer:
Use a GPIO input pin to detect button press and pause green LED output -> Option B
Quick Check:
Button detection requires GPIO input pin [OK]

Quick Trick: Use GPIO input pins for buttons [OK]

Common Mistakes:

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