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 Forum index » DIY Hardware and Software
What I found today..
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Silas



Joined: Apr 27, 2008
Posts: 23
Location: Denmark

PostPosted: Sun Apr 27, 2008 6:43 am    Post subject: What I found today..
Subject description: Dumpster diving is fun, but now what...?
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Hey people! I'm new here so, hello.. I was shanghaied here by dnny.

Anyway's, I do a bit of dumpster diving, and I found a video color corrector/whatever kind of thing. It wasen't working, and I can't be bothered to fix it. So I gutted the bastard.. Here's a list of IC's that i figured I could use for something "music" related.. BTW, sorry about the Caps Lock, but I Copy'n pasted..
I've already made a NAND Synth from the TC74HC00P, but it dosen't sound very good.. Anyway's I'm not asking to be spoon fed, errhh, oh wait I am.. I hope someone will bother to help me out.. I know your supposed to find what you want to build, and then get the supplies.. Anyways can anybody give me some hints to what to do with all these suckers..?

TC74HC00P - QUAD 2-INPUT NAND GATE
TC74HC02P - QUAD 2-INPUT NOR GATE
TC74HC08P - QUAD 2-INPUT AND GATE
TC74HC11P - TRIPLE 3-INPUT AND GATE ?
TC74HC20P - DUAL 4 - INPUT NAND GATE
TC74HC174P - HEX D TYPE FLIP FLOP WITH CLEAR
TC74HC193P - SYNCHRONOUS UP/DOWN BINARY COUNTER
TC4040BP - 12 STAGE RIPPLE-CARRY BINARY COUNTER/DIVIDERS
TL082CP - Dual JFET-Input General-Purpose Operational Amplifier
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andrewF



Joined: Dec 29, 2006
Posts: 1174
Location: australia
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PostPosted: Sun Apr 27, 2008 9:29 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Silas

welcome welcome welcome welcome

74XXXX chips don't often appear in analogue synth circuits, so are probably not much use (I have 100s....1000s?, that I have pulled from various junk, they never seem to get used).
you could look at the Lunetta forum for some ideas, but you will notice that CMOS 4XXXchips are better for Lunetta use.

The 4040 can be used as a clock divider, of course!

TL082 - always useful!

cheers
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v-un-v
Janitor
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Joined: May 16, 2005
Posts: 8934
Location: Birmingham, England, UK
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PostPosted: Sun Apr 27, 2008 1:53 pm    Post subject: Re: What I found today..
Subject description: Dumpster diving is fun, but now what...?
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Silas wrote:
Hey people! I'm new here so, hello.. I was shanghaied here by dnny.



Hey What???? Dnny?? Is he safe? I haven't seen him round here for a while.

welcome too Very Happy

_________________
ACHTUNG!
ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN.
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Silas



Joined: Apr 27, 2008
Posts: 23
Location: Denmark

PostPosted: Sun Apr 27, 2008 2:23 pm    Post subject: Re: What I found today..
Subject description: Dumpster diving is fun, but now what...?
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v-un-v wrote:


Hey What???? Dnny?? Is he safe? I haven't seen him round here for a while.

welcome too Very Happy


I've been talking to him recently over e-mail.. I have no idea if he's safe though. He seems like a evil crazed person if dosen't get his DIY adrenaline kick.. Very Happy
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v-un-v
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Joined: May 16, 2005
Posts: 8934
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PostPosted: Sun Apr 27, 2008 2:44 pm    Post subject: Reply with quote  Mark this post and the followings unread

Dnny hasn't posted here for nearly 2 years. I was getting worried for him Shocked

Too much radiation or something? (from his job!)

But he's safe. That's good Very Happy

_________________
ACHTUNG!
ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN.
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richardc64



Joined: Jun 01, 2006
Posts: 615
Location: NYC
Audio files: 26

PostPosted: Sun Apr 27, 2008 4:12 pm    Post subject: Reply with quote  Mark this post and the followings unread

andrewF wrote:
you could look at the Lunetta forum for some ideas, but you will notice that CMOS 4XXXchips are better for Lunetta use.


I have to disagree. The advantage of 4xxx is that it can operate at a higher supply voltage than HC, but if 5volts is enough, then HC is fine. If I ever get around to building Lunetta circuits, I'll make a 5volt system so I can freely mix CD4xxx, 74HC and even 74LS, if I have to.

The '193 would be good for a forward/reverse sequencer. I don't know off-hand of any designs, but there might be one somewhere.

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andrewF



Joined: Dec 29, 2006
Posts: 1174
Location: australia
Audio files: 4

PostPosted: Sun Apr 27, 2008 4:28 pm    Post subject: Reply with quote  Mark this post and the followings unread

richardc64 wrote:


I have to disagree. The advantage of 4xxx is that it can operate at a higher supply voltage than HC, but if 5volts is enough, then HC is fine. If I ever get around to building Lunetta circuits, I'll make a 5volt system so I can freely mix CD4xxx, 74HC and even 74LS, if I have to.



guess I was referring to this thread, as to advantages of CMOS -
http://electro-music.com/forum/topic-23876.html

Personally I also intend to try a 74XXX Lunetta(....one day), as i have so many 74 chips rusting away, a pile of njm2069s (5V korg VCF/VCA chips) and plenty of 5V switching PSUs, so amps are no problem.
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elhardt



Joined: May 14, 2005
Posts: 73
Location: USA

PostPosted: Tue Apr 29, 2008 7:48 pm    Post subject: Re: What I found today..
Subject description: Dumpster diving is fun, but now what...?
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Silas wrote:
Anyways can anybody give me some hints to what to do with all these suckers..?


You can build digital circuits with them. When I was in college I designed and built my own 16 bit CPU with about 130 7400 series chips. It seems like you're going about things in the wrong order though. First you have to have a need for something and then see if the chips can be applied to that need, not the other way around.
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Blue Hell
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Joined: Apr 03, 2004
Posts: 20678
Location: The Netherlands, Enschede
Audio files: 156
G2 patch files: 318

PostPosted: Tue Apr 29, 2008 8:07 pm    Post subject: Re: What I found today..
Subject description: Dumpster diving is fun, but now what...?
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[quote="elhardt"]
Silas wrote:
First you have to have a need for something and then see if the chips can be applied to that need, not the other way around.


But what when the need would be to use the chips ...

The kalimba theme in the other DIY thread made me think, one could glue the chips to some resonator & play the pins - maybe extended by wires soldered on to them | use contact microphones ... micro contact phones | have the sound processed by the chips themselves.

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