Free Project - 245 LED Display

[Pic_User]

..or I'll bet that the PBP demo would work for this...or not...

The PBP demo would work to program enough of a program to test a row or column then the next row or column. A good avenue suggested by fazan83.

Magu I am also beginner.... ...but you ask something that too general and may be too hard for you to chew one shot.
...Then once successful you can start troubleshooting this project why not you try to always on all the row 1st and cascade the counter.

...By doing this you know that your circuit is ok. (power supply, micro and driver is ok)
Then you can start deal with the EEPROM.

Just Try a basic thing 1st once you verified the basic thing works then you go to the harder thing.

Nobody can help you if you just keep ask general thing why it doesn't work.

hear this.... I don’t have do some tests..... No changes in the hex or anywhere else.

I don’t have PicBasic Compiler, it’s cost a lots of money. There it’s Another way to solve this problem ?...

Please read posts from Eng4444 (I sure miss him)

... the schematic posted was wrong... did you mistake on purpose? Were we supposed to guess the error in it?...

Dan Cata, do you think someone would post that much work, just to able to trick people. I guess many do not realize how many hours must have been involved in this project before posting it. Any project even simple ones, has a chance of the equivalent of a “typo”. The more and more circuitry involved cause the chance to be extremely large. Magazines have editors, proofreaders that check for these oversights. Magazines ALL have error pages in the next issue, about errors in the previous issue.

Hi Magu, If you agree, I will help you test your board step by step.
Best regards,
Luciano

Luciano, Thank you for your “seeing the bigger picture”. You have set an example for all of us on the forum. You have the right spirit and we salute you. Your tutorial step by step “trouble shooting” postings will be a great guide for future “new-bies”. These posts show, not only how to methodically, break down the process step by step, but how many steps are involved in the algorithm of “trouble-shooting”. I learned a great deal from your logical process, it is a work of art.

-Adam-