ccattitude 0 0 400 300 Form QFrame::StyledPanel QFrame::Raised 75 true CopterControl Attitude Calibration Place aircraft flat before computing Launch horizontal calibration. Zero Accel Bias 0 Qt::Horizontal 40 20 Click "Zero Accel Bias" to start Qt::Horizontal 40 20 Qt::Horizontal 40 20 Click to permanently save the accel bias in the CopterControl Flash. Save to SD Qt::Vertical 20 40