Like-a-pro soccer display?

Hi Carlo,

It may be worth purchasing a single LED digit, and testing it out. I did a similar thing, but for indoor game use in a bright environment. I used Avago HDSP-N150 which are 0.8 inch high digits, and were very bright and readable from 10 meters away. I think you will need larger digits. There are quite a few larger displays such as this one, but it's not mentioned in the datasheet how far away it is readable.

Also, you'll need some sort of filter. I used this filter sheet.

thank you but I think I need a much larger display. the professional ones are 10+ inch high

You could make your own 7-segment with discrete LEDs on PCB or stripboard. Use a transistor per segment and drive it from any small micro-controller board.

You can buy large 7-segment displays. Here's an 8" model from Seed studio, although it doesn't seem to be available to order:

http://www.seeedstudio.com/depot/7-Segment-Display-8-Inches-Red-p-1194.html

ciao pigraham, do you think possible to control 4 of those displays using an Arduino Uno? Please forgive me but I'm not an expert.

They do make them, I've seen them at my local hackerspace, you'd have to contact them.  I'm sure they are out of your price range though, one of their failings was price because recreational sports teams don't want to spend a lot of money on such a thing.

It's kind of hard to make a large display affordable / automatic.

A mechanical display with electromagnetic flaps to create letters is best for readability, but even more expensive.

It's kind of hard to make a large display affordable / automatic.

A mechanical display with electromagnetic flaps to create letters is best for readability, but even more expensive.

Mechanical could be the way to go. Manual slides or flaps to set the state of each segment. Maybe some LED just to illuminate.

Something like this!

Football Substitute Board | Football Resources For Coaches, Teams And Players - Forsport

or this

Substitute Board | Football Substitution Boards | Soccer Accessories and Equipment

Manual segments. Black one side coloured the other. Super cheap!

What? Too low-tech for you?

pigraham this is the system (more or less) that the team uses today. My idea is to provide them with something more similar to the professional teams. I'm happy because I'm getting a number of suggestions and ideas from the Community. And Easter may bring some more.

What price do you have in mind?

the budget for components I have in mind is around 50 Euro (70 US$), excluding Arduino Uno

I really appreciate your intention about making this project... If still you are facing some problem then update here.. May be we can help you... Any way All the best if u r still working on this project... or.. Congratulations if u have done with this.