[simpits-tech] MM5451 LED Driver

[volker metzger]

Hi Jay,
i use robs great driver with 2 mm5451 for a long time and hope i can give you the information you need to build the circuit. For the power sypply i use 6 volt (6v) with 200 milliampere (200ma). I run it on one machine with one parallel port and have around 60 diffent led (low power leds, plan leds, high itensity leds). I give you more information (how to coneect it and so on) at the weekend because i must take al olook at my circuit first, if you like i can upload pictures of the circuit. In the meantime you can take  
a look at the circuit in action, go the simpits member file "other - general"  and take a look at my upload pictures  ligthts, ohp,closer and lefside.jpg.

volker

"jay-anna" <jay-anna@mindspring.com> schrieb:
> To Robert or anyone out there, could you give a brief description of how
> this circuit works and will it work on a slave machine networked to a
> main box running Falcon or must it run on a host machine running Falcon?
> Can it run on a slave machine with Falcon mem-reader running?  There are
> 2 chips listed on the spreadsheet, are these two different circuits?  Do
> they need two different parallel ports? Two different computers?   Where
> does one locate these chips?  Digikey? Mouser etc?  The pin assignments
> for the LEDs are not really the pin of the chip, but the listed outs
> 1-35 listed on the circuit?  Are there any resistors that need to be
> used with these LED's?  What voltage LED are the best for this circuit?
> The capacitor, can it be a generic ceramic disc capacitor or does it
> need to be tantalum, electrolytic etc. type?
> 
>  
> 
> I'm not trying to be a butt with all the questions, goodness knows my
> pants are going crazy for the fact that someone knows how to do this and
> is willing to share it with others and now one less thing I have to
> figure out (and would probably have a hard time doing it since I don't
> know anything about programming).
> 
>  
> 
> Thanks
> 
> Jay
> 
>  
> 
>  
> 
> "Show me a man who cannot be bothered to do the little things, and I
> will show you a man who cannot be trusted to do the big ones."
> --Lawrence Bell, Founder Bell Helicopter
> 
> -----Original Message-----
> From: simpits-tech-admin@simpits.org
> [mailto:simpits-tech-admin@simpits.org] On Behalf Of Robert Favre
> Sent: Tuesday, October 29, 2002 6:14 PM
> To: simpits-tech@simpits.org
> Subject: RE: [simpits-tech] MM5451 LED Driver
> 
>  
> 
> No problem Mike.
> 
>  
> 
> Ok.here we go.I've uploaded the program to the ftp server
> (Falcon2_4.zip).  The installation instructions are fairly simple.put
> the vbio.dll file into the \windows\system directory, click on the
> Falcon2_4.exe program to run. I've also included an excel spreadsheet
> that lists which lights are on which pins.  Questions are welcome
> 
>  
> 
> Rob
> 
>  
> 
> -----Original Message-----
> From: simpits-tech-admin@simpits.org
> [mailto:simpits-tech-admin@simpits.org] On Behalf Of Mike Williams
> Sent: Tuesday, October 29, 2002 3:23 PM
> To: simpits-tech@simpits.org
> Subject: RE: [simpits-tech] MM5451 LED Driver
> 
>  
> 
> Thanks Rob, I may ask your help on this as I move forward, no heavy
> bugging though :)
> 
>  
> 
> -----Original Message-----
> From: simpits-tech-admin@simpits.org
> [mailto:simpits-tech-admin@simpits.org]On Behalf Of Robert Favre
> Sent: Tuesday, October 29, 2002 5:57 PM
> To: simpits-tech@simpits.org
> Subject: RE: [simpits-tech] MM5451 LED Driver
> 
> Yup.I'll put together a zip and post to the server.
> 
>  
> 
> Rob
> 
>  
> 
> -----Original Message-----
> From: simpits-tech-admin@simpits.org
> [mailto:simpits-tech-admin@simpits.org] On Behalf Of Mike Williams
> Sent: Tuesday, October 29, 2002 1:56 PM
> To: simpits-tech@simpits.org
> Subject: RE: [simpits-tech] MM5451 LED Driver
> 
>  
> 
> Rob,
> 
> no idea how to code, maybe I will have to learn some if I must, do you
> already have a program written to for the w/ 5451 to interface w/
> 
> Falcon? 
> 
>  
> 
> Thanks
> 
>  -----Original Message-----
> From: simpits-tech-admin@simpits.org
> [mailto:simpits-tech-admin@simpits.org]On Behalf Of Robert Favre
> Sent: Tuesday, October 29, 2002 2:40 PM
> To: simpits-tech@simpits.org
> Subject: [simpits-tech] MM5451 LED Driver
> 
> Ok folks.I've uploaded (circuit.jpg) the circuit diagram for the 5451
> LED driver to the ftp site.  In a single chip configuration, the chip
> connects to pins 2,3 and 18 of the parallel printer port.  As always,
> please be careful in working with ports on your PC.  If anyone needs
> help with the code portion, I can only help if you're interested in VB.
> Also, my code requires the use of a 3rd party driver called VBIO (it's
> free, and I believe I have a copy somewhere as well).  When I last
> played with the code, I was running a Win98SE PC, so I haven't tested on
> any other OS.
> 
>  
> 
> Rob
> 
>  
> 
>