Raspberry Pi - I2C Communication
You enabled I2C in raspi-config but
i2cdetect -y 1 shows no devices. What is a likely cause?You enabled I2C in raspi-config but i2cdetect -y 1 shows no devices. What is a likely cause?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Check if reboot was done after enabling I2C
Reboot is required to activate I2C changes; missing reboot causes no detection.Step 2: Verify device connection and bus number
If device is not connected or wrong bus number used, no devices appear.Final Answer:
All of the above -> Option BQuick Check:
Missing reboot, no device, or wrong bus = no detection [OK]
Quick Trick: Reboot and check connections if i2cdetect shows nothing [OK]
Common Mistakes:
MISTAKES- Not rebooting after enabling I2C
- Assuming device is connected without checking
- Using wrong bus number in i2cdetect
Master "I2C Communication" in Raspberry Pi
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