[Solved] Identify the error in this code snippet using DistanceSensor: from gpiozero import DistanceSensor sensor = DistanceSensor(echo=4, trigger=17) print(sensor.distance * 100) | Raspberry Pi

Raspberry Pi - gpiozero Library

Identify the error in this code snippet using DistanceSensor:

from gpiozero import DistanceSensor
sensor = DistanceSensor(echo=4, trigger=17)
print(sensor.distance * 100)

AEcho and trigger pins are swapped

BMissing import statement

Csensor.distance returns centimeters directly

DPrint statement syntax error

Step-by-Step Solution

Solution:

Step 1: Check pin assignments
The echo pin should be connected to the sensor's echo pin, trigger to trigger pin. Usually, echo=17 and trigger=4 is standard, so swapping is likely wrong.
Step 2: Verify other code parts
Import is correct, sensor.distance returns meters (not centimeters), and print syntax is valid.
Final Answer:
Echo and trigger pins are swapped -> Option A
Quick Check:
Pin swap error = D [OK]

Quick Trick: Echo pin usually higher number than trigger [OK]

Common Mistakes:

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Identify the error in this code snippet using DistanceSensor: