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Hello I am building a wet compass for a flight simulator. I currently have a stepper motor functioning well with the simulator but at the point of crossing 360 to 0 degrees the stepper does a full reverse 360 to get into position.

My question... can anyone please assist me in creating code that makes the linear cross from 360 to 0 work in both directions.

The simulator feeds a Float Val that is a degree out of 360 eg. 172.13. My stepper has 4076 steps per full revolution. You will see the math in the code below. I am using the AccelStepper library.

void ProgOut(byte id, float val) 
switch (1) 
case 1:  

if (val)
         stepper1.moveTo(val * 11.3222222);          
         
        stepper1.run(); 

break; 

I have tried something like this:

void ProgOut(byte id, float val) 
switch (1) 
case 1:  
if ( stepper1.distanceToGo () >= 4064)
          stepper1.moveTo(4076);
          stepper1.setCurrentPosition(0);

    else if (val)
         
                
                stepper1.moveTo(val * 11.3222222);         
         
         
        stepper1.run(); 

break; 

Thanks in advance for any assistance

if you already found out the resolution of your motor stepper, just do a simple conversion task:

const float resolution = xx.xx; // put your step resolution here
int step_degree(float desired_degree)
 return (desired_degree/resolution);

This can be use by calling

stepper.step(step_degree(40)); //rotate 40 degree.

So in your case if you want it to cross over smoothly from 360 to 0, just pass an angle that is greater than 360 in the step degree.