The integrated board works as expected on my desktop tracker. I had to do only minor adjustments to the code (pinmapping, etc.). The main issue is the z-axis zero offset of the MXC4005XC. This amazing chip monitors the convection within a tiny volume to calculate the acceleration. This works very well for the x and y components but the z component can be off by +/- 0.5g. Therefore, we need to set one more parameter in EEPROM, the z-axis acceleration offset for which I used the ascii sign "_" in my table. (Each of the 64 parameters in EEPROM is indexed with an ASCII sign).