Last week I purchased a new mindracer and the staff gave me this information: Please be kindly noted that due to EOL(end-of-lifetime) of HMC5883, all new shippment of MindRacer has changed onboard magnetometer from HMC5883 to QMC5883. You may need to check software driver compatibility according to what flight stack you are using.
And after I calibrated all the sensors (including compass), I cannot arm the drone. It says "Preflight Fail: Compass Sensor #9 missing". So I am guessing this is the reason. Is there a way to change the firmware so that the new mindracer can be use? Thanks