Raspberry Pi - Automation and Scheduling
Which of the following Python code snippets correctly initializes GPIO pin 18 for relay control using RPi.GPIO?
Which of the following Python code snippets correctly initializes GPIO pin 18 for relay control using RPi.GPIO?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall correct GPIO setup for relay
Relay control requires output mode, so GPIO.OUT is needed.Step 2: Check syntax correctness
GPIO.setup(pin_number, mode) is the correct function call; GPIO.setup(18, GPIO.OUT) is valid.Final Answer:
GPIO.setup(18, GPIO.OUT) -> Option BQuick Check:
GPIO setup for relay = GPIO.OUT [OK]
Quick Trick: Use GPIO.setup(pin, GPIO.OUT) to control relays [OK]
Common Mistakes:
MISTAKES- Setting pin as input
- Using invalid mode like GPIO.PWM
- Incorrect function parameters
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