So I have these small panels (0.1 scale, not sure if I should be doing that, or just making the map bigger) I have a larger box collider on the panels, and they are a rigidbody. My code looks like this (Layer 8 is my flashlight, which I don't want the panel to care about, otherwise it should turn left before it hits the object, which it isn't doing)

void Start()
{
    ray = new Ray(transform.position, transform.forward);
}

void Update() { LayerMask layerMask = 1 << 8;

        if (Physics.Raycast(ray,out hit,50f,layerMask))
        {

           transform.Rotate(Vector3.up, -90 * 5 * Time.smoothDeltaTime);
        }
        else
        {
            if (UpDown)
                transform.Translate(0, 0, 2 * Time.deltaTime, Space.Self);
            else
                transform.Translate(0, 0, 2 * Time.deltaTime, Space.Self);

        }
}

EDIT: When I use this code, I do hit the wall (though I spin in circles as walls are all around) whenever I add a distance, the plane just walks right up to the wall.

if (Physics.Raycast(ray,out hit))
            {
                Debug.Log(hit.distance.ToString() + " " + hit.collider.gameObject.name);
               transform.Rotate(Vector3.up, -90 * 5 * Time.smoothDeltaTime);
            }
            else
            {
                if (UpDown)
                    transform.Translate(0, 0, 2 * Time.deltaTime, Space.Self);
                else
                    transform.Translate(0, 0, 2 * Time.deltaTime, Space.Self);

            }