Custom LED project, can anyone help?

[WHaThEFLuX]

Re: Custom LED project, can anyone help?

Wow, I can't believe that information was right in front of me! It looks like I'll be going with the NTE3078 then, was I correct in assuming that VSS on the MM5450 will go to ground on the REV A. board?

[fzabkar]

Re: Custom LED project, can anyone help?

Yes, VSS is ground. Best of luck.

BTW, if you compare your bitmap against the one in the Lite-On datasheet, you will see why your display was garbled.

[WHaThEFLuX]

Re: Custom LED project, can anyone help?

It's all so clear now, I can't thank you enough for your advice!

[WHaThEFLuX]

Re: Custom LED project, can anyone help?

My last question concerning this project is the type of components I need to make this custom setup function.

I believe I need a capacitor and a 100K resistor, can anyone let me know if this is correct and if so what kind of capacitor I should use?

Figure 13 :
http://www.micrel.com/_PDF/mm5450.pdf

[fzabkar]

Re: Custom LED project, can anyone help?

Those components are external to the original module. They should be on the PCB. There should be no need to add your own.

[stj]

Re: Custom LED project, can anyone help?

do yourself a big favour and dont by any ancient / b-grade parts that have been re-labelled "NTE"

go buy new parts from "real" manufacturers with "real" part numbers.

[WHaThEFLuX]

Re: Custom LED project, can anyone help?

I'll be making my own pcb to put the mm5450 on along with the digits so I can have traces instead of a bunch of wires, so will I still need the components?

[fzabkar]

Re: Custom LED project, can anyone help?

I assume you are just making a daughter PCB that will connect to the main PCB via a 7-pin header. If so, then you don't need additional brightness RC components on your daughter PCB.