PLAN B analog blog

Getting ready for the first release of the ELF series, I did a little
work on the Model 23 Analog Shift Register this weekend and (get this)
actually did the programming for a micro-controller myself and it
(gulp) worked!  So instead of four CMOS chips required just to get the
timing stream for the shifting, it's now running all from a single
Atmel 2051. This obviously is a great cost savings, not only for component $$ but the cost of assembly as well and this will be past on to the end user.

Also, the Track in Hold feature seemed cool on paper but it's actually crap in use.  So instead of that it'll have four shifted outputs instead of three and the mode switch. 

Better.

- P

Yay!

Lemonade was a popular drink in my day and it still is!

I've dreaming of this module for a while, will it still do the linking described on the page for it?

Thanks in advance,

~Danny

On Mon, Feb 04, 2008 at 11:55:46PM -0000, (i think you can figure that out) wrote:
> Getting ready for the first release of the ELF series, I did a little
> work on the Model 23 Analog Shift Register this weekend and (get this)
> actually did the programming for a micro-controller myself and it
> (gulp) worked!  So instead of four CMOS chips required just to get the
> timing stream for the shifting, it's now running all from a single
> Atmel 2051. This obviously is a great cost savings, not only for component $$ but the cost of assembly as well and this will be past on to the end user.
> 
> Also, the Track in Hold feature seemed cool on paper but it's actually crap in use.  So instead of that it'll have four shifted outputs instead of three and the mode switch. 
> 
> Better.
> 
> - P
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
>

Yep!

There will be an internal cable for linking them together.  If nothing
is connected to the second, third, etc ASR down the line it'll
automatically link together to the same voltage/trigger in put as the
first.  

Trouble in paradise:

In order for an ASR to do it's job, the pulses that trigger each of
the S+Hs have to be delayed ever so slightly.  With one M23, possibly
even two (making for a total of eight stages) you won't notice the
delay from the time the modules get their pulses to the time the
update occurs.  Adding more however you may hear the transition. 
Nothing can be done about that as it's the proper way an ASR must
operate.  The will be an aprox 3mS delay between when the module
receives it's external trigger to the time the last of the four
outputs does it's update. Again 1 r two tagged on there should be
fine.  Three or four?  who knows.  At a certain point the delay wil be
as such that you will notice it.



--- In PLAN_B_analog_blog@yahoogroups.com, Daniel Ornelas <danny@...>
wrote:
>
> Yay!
> 
> Lemonade was a popular drink in my day and it still is!
> 
> I've dreaming of this module for a while, will it still do the
linking described on the page for it?
> 
> Thanks in advance,
> 
> ~Danny
> 
> 
> On Mon, Feb 04, 2008 at 11:55:46PM -0000, (i think you can figure
that out) wrote:
> > Getting ready for the first release of the ELF series, I did a little
> > work on the Model 23 Analog Shift Register this weekend and (get this)
> > actually did the programming for a micro-controller myself and it
> > (gulp) worked!  So instead of four CMOS chips required just to get the
> > timing stream for the shifting, it's now running all from a single
> > Atmel 2051. This obviously is a great cost savings, not only for
component $$ but the cost of assembly as well and this will be past on
to the end user.
> > 
> > Also, the Track in Hold feature seemed cool on paper but it's
actually crap in use.  So instead of that it'll have four shifted
outputs instead of three and the mode switch. 

> > 
> > Better.
> > 
> > - P
> > 
> > 
> > 
> >  
> > Yahoo! Groups Links
> > 
> > 
> >
>