Cause i can not find precise led ring.
There's no existing solution to get 16 pots in line with its rings which fits in a 19“ rack face.
So i tried to design it.

The goal:

• 20mm diameter ring.
• 32 matriced Leds on SR.
• 26mm between 2 rings for 16 to fit in a 19” rack.
• For encoders and potentiometers 270° and 300°.
• Low profile for integration facility.

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