Thank you for your quick replies, wearyhacker. Glad you found a solution. I see you are using a different environment - platformio instead of Arduino. And I have seen many references to JSON, but I haven't looked into it , yet.
Just a couple...
I just now found your post by searching for sample_data.h. I can not find this file anywhere.
I've even searched the complete Teensy libraries.
Could you tell me where it resides?
Moreover, perhaps I can help you out... I JUST finished a...