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What is the typical voltage level used for UART communication between Raspberry Pi and Arduino?

easy🧠 Conceptual Q1 of 15
Raspberry Pi - Serial UART Communication
What is the typical voltage level used for UART communication between Raspberry Pi and Arduino?
A5V for Raspberry Pi and 3.3V for Arduino
B3.3V for Raspberry Pi and 5V for Arduino
C1.8V for Raspberry Pi and 3.3V for Arduino
D12V for both devices
Step-by-Step Solution
Solution:
  1. Step 1: Understand voltage levels for UART

    Raspberry Pi uses 3.3V logic, Arduino typically uses 5V logic for UART.
  2. Step 2: Match voltage levels for communication

    Correct UART communication requires Raspberry Pi at 3.3V and Arduino at 5V.
  3. Final Answer:

    3.3V for Raspberry Pi and 5V for Arduino -> Option B
  4. Quick Check:

    Voltage levels = 3.3V and 5V [OK]
Quick Trick: Raspberry Pi UART uses 3.3V logic, Arduino uses 5V logic [OK]
Common Mistakes:
MISTAKES
  • Assuming both use 5V
  • Using 12V which is too high
  • Mixing voltage levels incorrectly

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