Introduction: 5X5 Dot Matrix on Arduino (gets Text From Pc) Full Instructions and Script


With this you just type the text you want on your computer and your 5x5 dot matrix shows the message.

~25 leds
~Arduino uno
~5x 100ohm resistor
~and a bit of skripting

It took me a while to figure this all out but in the end it was quite rewarding. not really practical though. :)

Plz comment and let me know what you think.

Step 1: You Wil Need..

25 leds
Arduino-  have the uno-
Sharp nose [liers for hard to reach places (optional)
5x100 ohm resistors (brown black brown)

Step 2: Diagram

I know it looks sideways but this is how i connect it to my Arduino

Step 3: Starting With Connections

Here is how i coneckted the leds. it gets a bit conplecated but works. feel fre 2 try own metheds

I made it that all the anodes are connected down, like in the pic. the cathodes are so that only 2 are connected. The one on the left shears a line with the one on his right.

Step 4:

The catrodes are then connected to allow a horizontal connection as n the photo.

I just wired them all to a neutral location so that can connect them to my arduino easier

Step 5: To Arduino

now just connect according to the diagram with the resistors on the cathrodes. 

Step 6: Now Connect to Pc

Connect your arduino to pc upload the script, go to serial monitor, type your message and see your 5x5 dot matrix give you your message