I apologize that I didn''t slog through all 495 previous posts in this thread.
But I just received a kit from an Ebay vendor and at first inspection, it looks good.
However, there is no documentation, even a schematic diagram.
Is the board layout and schematic diagram available online somewhere?
A quick Google search didn't reveal anything promising.
I am going to be asking the Ebay vendor also, but they appear to sell everything from soup to nuts and they don't appear to be much into electronics.