Neon effect

Hi,

pls, can anyone help me to achive a "neon effect" with 6 or 8 SMD led-s and 12F629 or 16F84 in PBP.
Example is in attach.

For sequence of lighting individual LED can be used numbers stored in EEPROM instead of random generated.

Thanks,

Andrej

Yes, are you willing to pay for this?

Quote:

---

Originally Posted by Jerson

...are you willing to pay for this?

---

No, no

I didnt mean to commercialize yours idea.

Im just hobiest in model railroading with some knowledge of PIC programming, and I want to illuminate my layout.

I did not mean a complete code, maybe a snippet for effect of one LED.

Thanks, anyway !

Andrej

You could use 8 outputs to drive the smd leds. Have a table of bytes to write as the 'effect' you want. Then, sit in a loop doing this

counter = 0
loop:
counter = counter+1
if counter > tablesize then counter = 0

read byte from table[counter]
write byte to the port
pause for as long as you want

goto loop

This should get you started.

Jerson

Thanks,

I will try some, but how can I randomize a sequence of lighting according a numbers stored in EEPROM and finally light up all LED-s ?

Andrej

your table could contain the lighting sequence which you want to produce

example
00011001 - light 3 leds
00100101 - light another 3 leds
11100011 - another pattern

Do this and fill your table with whatever you want.

Jerson

Thanks,

finally found time to complete this

:)

His projects don't use a PIC, but you might take a look at:

http://www.hometown.aol.com/tractionfan/projects.htm

You can make a PIC emulate the twisted ring counter he uses, or do it with random number generation, all without EEPROM tables. If you want some code examples of both approaches, I can send them to you.