# 7 Segment Display

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#### fury

##### New Member
Hi everyone, I surf the boards a bit but have never posted, I hope this doesn't stop you from offering me a solution to the problem I am having.

I'm looking for a 7 Segment Digit that is about 12inchs or 300mm high (bigger is better). It will be part of a pair that needs to be clearly visable at about 100m - 150m. I had a huge surf of the web and most products seem to be quite small and any large ones I found were VERY expensive.

#### fury

##### New Member
I played around with making my own digits and the biggest problem I had and one that I have not yet solved is defusing the bright blue LED's enough so that the shape of the LED can't be seen.
I tried opaque perspex and still the LED's could be seen.

I am thinking this could work but I guess thicker white perspex with wider angle LEDs?

#### Mr RB

##### Well-Known Member
You need enough distance between the LEDs and the diffuser on the front of the display. That's why they cut the 7 segments as cavities in the big block of styrofoam and then put the LEDs right at the back and blue clear stuff on the front.

The closer to the LEDs your diffuser gets the more it looks like "little dots" of light.

#### fury

##### New Member
Hey everyone, I'm still working on this project. Im now looking for a 16button matrix keypad that is water proof? Any online stores that ppl know of? tx

#### fury

##### New Member
Yeh thanks Eric but just alittle pricey for what im looking for. With 1hr of google mashing, I've managed to get one hit. Its looks quite promising tho...Snap dome fully sealed waterproof one.

plz let me know if anyone else seen anything similar.

I've been playing around with the 9S12C32 MCU that turned up today, its really quite solid.

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#### mneary

##### New Member
You didn't specify how deep underwater it will be, but there's a BIG difference between waterproof and 'for indoor and outdoor use'.

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