17 May '13, 9pm

LED retrofit for vintage edge-lit numeric display modules - This single digit display is an old edge-lit module th...

LED retrofit for vintage edge-lit numeric display modules - This single digit display is an old edge-lit module th...

We’ve seen these exact modules before, referenced in a project that created an edge-lit Nixie tube from scratch . Each digit in the display is made from a piece of acrylic with tiny drill holes which trace out the numerals. The acrylic is bent so that the edge exits out the back of the module where it picks up light from the bulb. [Ty] laid out his circuit board so that each LED was in the same position as the bulb it was replacing. As you can see, his retrofit works like a charm.

Full article: http://hackaday.com/2013/05/17/led-retrofit-for-vintage-e...

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