In a hurry I mistakenly connected the VCC of the Bmp280 to ground and the ground of the Bmp280 to 5V.

Afterwards, I checked the i2c-bus with another sensor but i2cdetect -y 1 only reported --.

Q How can I determine with simple means (no oscilloscope) what I bricked? Bmp280-sensor, i2c-bus on rPi, both, what else?

  • It sounds like you have destroyed the BMP280.
    – joan
    Apr 14, 2019 at 9:06
  • @joan Unfortunately, you're right I blew the BMP280 but the good news is the i2c-bus on the rPi is alive. Apr 14, 2019 at 12:54
  • 1
    How is this related to I2C at all? All I see is power and ground were flipped Apr 17, 2019 at 3:07

1 Answer 1


Run (my) gpiotest or run wiringPi's pintest.

For both tests nothing should be connected to the expansion header.

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