[Solved] What will be the output of this code?import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.setup(23, GPIO.IN) print(GPIO.input(23))Assuming pin 23 is not connected to anything. | Raspberry Pi

Raspberry Pi - GPIO Basics with Python

What will be the output of this code?

import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setup(23, GPIO.IN)
print(GPIO.input(23))

Assuming pin 23 is not connected to anything.

ARandom value (0 or 1)

B1

CError: Pin not connected

D0

Step-by-Step Solution

Solution:

Step 1: Understand floating input pins
If an input pin is not connected (floating), it can randomly read 0 or 1 due to electrical noise.
Step 2: Predict the output
Since no pull-up or pull-down resistor is set, the value is unpredictable and can be 0 or 1.
Final Answer:
Random value (0 or 1) -> Option A
Quick Check:
Floating input pin reads random value [OK]

Quick Trick: Floating input pins read random 0 or 1 without resistor [OK]

Common Mistakes:

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What will be the output of this code?