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Build a 7x7 monochrome LED display

Here is the circuit schematic as well as build instructions and parts list for an easy to build 7x7 LED matrix.

The 7x7 monochrome LED display comes into its own when showing animations. The link shows the circuit schematic is quite simple. All you need is an AVR, a few transistors, com resistors and some logic to convert RS232 to TTL.

LEDs1.JPG

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Comments (3)

This seems interesting. It would be really greatfull if you could provide some more details to build up the circuit.

This seems interesting. It would be really greatfull if you could provide some more details to build up the circuit.

Gamal Benkhaial:

Dear Sirs

Please if you can show me how to build a led display screen either full color or mono color, I would like to know the conniction circuit diagram if that is possible.

Your help will be highly appreciated.

Best regards.

Gamal

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