Have to admit that I wonder how well this works in practice, beyond the novelity factor. 10 tuning steps on a magic eye is nothing. An analog display can be read to nearly any desired degree of accuracy, but a device like the LED eye would require some form of scale loupe to funcion as desired. That would be non-trivial to add.
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Originally Posted by Biggles
I wonder if you could get realistic results by using the square/rectangular shaped leds and carefully filing one edge to an angle so they fit together in a circular fashion if you understand what I mean...
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There are LEDs with a triangular end shape. The root of the body is rectangular, yet even then you don't have to be very careful when filing them into shape.
Best regards
Frank N.