I bought a HMC5883L board from drotek (http://www.drotek.fr/shop/en/25-hmc5883l-magnetometer-compass-sensor.html). After connecting the board to the i2c bus of my nanowii (ATmega32U4) the sensor board is not detected.
I tried the code from this site (http://todbot.com/blog/2009/11/29/i2cscanner-pde-arduino-as-i2c-bus-scanner/comment-page-1/) to scan the i2c bus without success. Nothing found... The same happend if I connect the board to my raspberrypi and scan the bus with i2cscanner.
Any suggestions? Is the sensor board broken?