matrix display error

[muhammadbilal]

sir i made a led matrix display of 35×7 and we use eproam24C04 programming and we put its hex code but not any thing show on display.so sir please help me to done it.thanks

[Demon]

What model PIC did you use?

PBP version?

What CONFIGs did you use?

What code do you have so far?

Do you have a schematic of your circuit?

Robert

[Art]

That's a pretty far reach.
Because your screen dimensions weren't evenly divisible by eight.
Chuck it and start again :D

[muhammadbilal]

i have pic model 16f628A.
PBP version is beta 0.1
yes i have Schematics both of display circuit and controller circuit.
but i use 24C04 in place of 24C56.
all things are these attachments.
i use hex file for programming code.
71327133
plz help me. because after done the all things nothing be shown on display.please help me.

[Demon]

...
PBP version is beta 0.1
...
please help me.

I'd start by updating. lol

Robert

[Demon]

but i use 24C04 in place of 24C256
...


Did you check if a 24C04 has enough capacity for the application?

Robert

[Art]

This works:
http://www.picbasic.co.uk/forum/showthread.php?t=18491
but if it didn't, it would be easy for everyone to help.

The reason I find this funny, is total lack of information
like "I have a problem with my kite, it doesn't fly".

Unless you know you can use the EEPROM you did,
that could be a problem. It would have been for one I wrote.
So it would help, for example, you communicated that you do,
or don't know it's ok to substitute that EEPROM.

If it's a personal project, check Microchip samples won't provide the right one for free.

[Demon]

Make sure you have 5v on your circuit to begin with. LM7805 could easily be placed backward with this schematic.

Robert