Help. Trying to use QMC5883L but the i2c sensor can't detect the device

[k00987j]

I'm one week into arduino and I don't know what is the problem. Help please.

[k00987j]

[Brazilino]

Hi! Welcome to the Forum.

Looks like you have SDA and SCL cables inverted. SDA (green cable) must be connected to A4 and SCL (blue cable) must be connected to A5.

[van_der_decken]

For one thing that header isn't soldered, so you'll never get reliable contacts across all 4 lines. That's a great way to destroy the sensor.

[gilshultz]

The odds are against you for that being a good sensor, the loose connections because of the un-soldered header can damage or destroy your sensor.