I want to connect PCF8951 with Raspberry Pi

I'm following: 1: https://www.sunfounder.com/learn/sensor-kit-v2-0-for-raspberry-pi-b-plus/lesson-13-pcf8591-sensor-kit-v2-0-for-b-plus.html

But when using the command sudo i2cdetect -y 1, Can't find I2C device/address. Why??? [Not disabled jumper P4 P5 P6]


  • 1
    If you edit your question and add the screen output as text with "code" format, I will perhaps read and try to assist you, the picture is worthless! – MatsK Jan 20 '18 at 10:37

A number of possibilities.

  1. The device is not properly connected to the bus.
  2. The device is broken.
  3. One of the Pi's SDA or SCL GPIO is bust.
  4. One of the Pi's SDA or SCL GPIO is not in the correct mode.

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