Free Project - 245 LED Display

[Dan Cata]

Dear Trent, can't you at least post a big rezolution picture of the circuit's pcb, of the logical part, not of the led's? 10q

[T.Jackson]

Dear Trent, can't you at least post a big rezolution picture of the circuit's pcb, of the logical part, not of the led's? 10q

I HAVE posted a big picture of the PCB with more than adequate resolution. See post #15 http://www.picbasic.co.uk/forum/atta...4&d=1177471027

[Dan Cata]

I HAVE posted a big picture of the PCB with more than adequate resolution. See post #15 http://www.picbasic.co.uk/forum/atta...4&d=1177471027

I ment something more like this pic...

[T.Jackson]

Sorry - as I've said before, the PCB artwork isn't available.

[magu]

i made the pcb in orcad layout, but it doesen`t WORK !!! . Tell me the problems... plsssss. And the led should lit when the serials cable+ 5v cable is connected to the board or not? or when the 5v cable is connected?

On the link you can see the board... The caps than are not shown i have reposition them... the picture has made without them...

http://www.zamfirelu.org/led/fata.jpg

[magu]

I don't remember seeing any money back guarantees anywhere...I could be wrong. How much did you pay for this project?

And I built it over the weekend (although I simulated the bulk of the LEDs and left a couple of banks off), worked fine for me.

i spend over (in your currency) 30$ (american) . If you have orcad and layout i attach the files, the design of the board and the pcb. I examin the circuit over 14 times and i draw it good. If you can send me your pcb or design of the board it will be helpful.. thx..

[fazan83]

what ? : "????????????????????????????????????????????????? ??????????????? ."

Magu I am also beginner....but I think you are asking something but you ask somtehing that too general and may be too hard for you to chew one shot.

Why not you create a simple flashing LEDs 1st.
Be familiar with with the PIC 1st. The Circuit and PIC Basic Pro Language 1st.

Then once successful you can start troubleshooting this project why not you try to always on all the row 1st and cascade the counter.
Just high all the Rows 1st.


TRISA = %00000000
TRISB = %10000000

'Variables...

ColPosition VAR BYTE
ClockColsCounter VAR PORTB.6
ROW1 VAR PORTA.2
ROW2 VAR PORTA.3
ROW3 VAR PORTB.4
ROW4 VAR PORTB.3
ROW5 VAR PORTB.0
ROW6 VAR PORTB.2
ROW7 VAR PORTB.1
ResetColsCounter VAR PORTB.5


'Reset 4017 counters
ResetColsCounter = 1
Pause 100
ResetColsCounter = 0

ROW1 = 0
ROW2 = 0
ROW3 = 0
ROW4 = 0
ROW5 = 0
ROW6 = 0
ROW7 = 0

Matchmode:
ColPosition=0
ROW1 = 1
ROW2 = 1
ROW3 = 1
ROW4 = 1
ROW5 = 1
ROW6 = 1
ROW7 = 1

CascadeCounter:
For ColPosition = 0 to 37
PULSOUT ClockColsCounter,100 'to create a PWM for 4017 counter clock
Next ColPosition

Goto Matchmode:
END

Do not think to fetch the data from the EEprom 1st.
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.