Hello!
I'm new here so I hope this is posted in the right place.
I have a project I'm working on where I need to build a large clock display HH:MM:SS. The display needs to be readable from ~40 feet away, the larger and brighter the better. Its not required to be a 7 seg display, but easier to program would be helpful. I've been looking at displays all over adafruit and amazon. I didn't find any larger than about 9" and most were Full color matrix displays. This can work, but I'm just not finding any compatable with arduino that can give me numbers about 12" tall.
Does anyone have any hardware suggestions? I would need to purchase 6 of these.
Search "led scoreboard display".
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7seg. Scalable. Text and videos. Construction, wiring and code.
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Build your own 6-digit 7-segment display from ws2812 led strip. Some (most?) strips have backing tape, so you can cut the strip to make your segments and stick it down to a backboard of your choice.
The trickiest part of this idea is soldering the wires to join the segments back into a single strip
The advantage of this idea is the simplicity. No driver chips or circuits needed, and no multiplexing, making the display bright enough to be seen outdoors in sunlight.
Here is the clock I built this way:
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You could use Neopixels and design a large 7segment display.
I have a library supporting these kind of displays:
https://werner.rothschopf.net/202005_arduino_neopixel_display_en.htm
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