FWD:Re: [sdiy] ASM-1 LFO q

[Scott Gravenhorst]

Jaco Sloof <jacosloof at yahoo.com> wrote:
>4069 inverters? seems like a nice digital solution for
>producing the square wave... 

Actually, it does square and triangle at the same time.

>schematic online?

http://linux6/RemoteWebsites/gte/TekLab_FatMan_WebSite/4069_LFO.html

Tri is what you get from the pot output.  Square is available
at pin 4 of the IC.  One 4069 would make a dual if you wanted
to, since there are 6 gates.
 
>digitally controlleable?

No, it's just a simple thing, it's actually a CMOS adaptation of 
the classic integrator and schmitt trigger LFO.

>im getting a picture in my head of an LFO module with
>3 7seqment led displays, and two push buttons to
>increase/decrease the frequency... (in .1 Hz?) 
>with slide ofcourse, to prevent the audible glitch in frequency...
>and with multi wave out (sqr/tri/saw/sin) 
>and <fill in wacko idea>
>and <fill in wacko idea>
>and <fill in wacko idea>
>
>or am i being an over-enthusiastic novice now? 8-}

I would never say...  (c:

>--- Scott Gravenhorst <music.maker at gte.net> wrote:
>> I've cloned the LFO, both as-is and using 4069 inverters
>> instead of opamps.  I get both square and tri from both
>> designs.  If you get square, I can't imagine how you
>> would not be seeing the tri.
>> 
>> Jaco Sloof <jacosloof at yahoo.com> wrote:
>> >That would be proppellorheads/steinberg right?
>> >
>> >Well, you got to admit, Reason is a pretty neat package, complete
>> >with afterswinging patch-cords when you turn around the rack, but
>> it
>> >doesnt compare to the real work... i think... (havent yet
>> completed
>> >my asm-1 yet)
>> >
>> >but anywayz... anybody else built an asm-1 here?
>> >
>> >i need some advice on the LFO...
>> >
>> >The square wave out is fine and dandy, but i cant seem to get the
>> >triangle wave to work...
>> >
>> >(minor detail, outputs are "patched"(crocodile clips) dirctly to a
>> >speaker...)
>> >
>> >i wasnt feeling good about putting the output on my soundcard line
>> >in, to use with winscope, maybe too much voltage...
>> >
>> >anybody can throw me a rope here, thanx 
>> >
>> >CJ Wacko Jacko 
>> >
>> >
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>> -- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
>> -- Linux Rex         | RedWebMail by RedStarWare
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>
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=========================================================  
- Government: The other religion.
- The media's credibility should always be questioned.
- Lambs who lie down with lions are lunch.

-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
-- Linux Rex         | RedWebMail by RedStarWare
-- FatMan: home1.GTE.NET/res0658s/TekLab_FatMan_WebSite/index.html