Raspberry Pi - SPI Communication
Why do we need an ADC (Analog-to-Digital Converter) like MCP3008 when using a Raspberry Pi to read sensors?
Why do we need an ADC (Analog-to-Digital Converter) like MCP3008 when using a Raspberry Pi to read sensors?
easy🧠 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Raspberry Pi's input capabilities
The Raspberry Pi's GPIO pins can only read digital signals (on/off), not analog voltages.Step 2: Role of ADC
An ADC like MCP3008 converts analog voltages from sensors into digital numbers the Pi can read.Final Answer:
Because Raspberry Pi cannot read analog signals directly -> Option AQuick Check:
ADC needed for analog input = Because Raspberry Pi cannot read analog signals directly [OK]
Quick Trick: Remember: Pi reads digital only, ADC converts analog to digital [OK]
Common Mistakes:
MISTAKES- Thinking Pi can read analog signals directly
- Confusing ADC with Wi-Fi or USB functions
- Assuming Python support relates to ADC
Master "SPI Communication" in Raspberry Pi
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