Help me about HC05 connection problem

[wtrk]

Hi everyone.I have a problem.

In attached image,when I cut of red parts in bin code, HC05 bluetooth module connect to my device. But After I cut this parts of code, my visualizer 3d getting data wrong. Especially first data logging wrong.
How can I solve this problem ?

I just want to connect my device to Visualizer 3d with HC05 module





For all helps thanks

[Mc.moein]

Hi
I need information about 3d visualizer that describe how to connect to raspberry or arduino and what protocol use to recive data from magnetometer or gradiometer.i want build gradiometer.please help me