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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
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Posted: Mon Aug 22, 2005 6:56 am Post subject:
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wow that is fantasic , i didnt expect the sound to be so clear. whats the toy ? ( and may i add what a sick toy it must be, some kind of bar fighting toy? ) |
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dnny
Joined: Mar 12, 2005 Posts: 519 Location: Helsinki, Finland
Audio files: 8
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
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Posted: Wed Aug 24, 2005 8:12 am Post subject:
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Pehr wrote: | Is it hard to scale it down to a 4-step sequencer? With only one 74HC4016, right? |
yeh all youd have to do is connect step 5 (pin 10) to reset (pin15) then remove everything to do with step 5 and up including the second 4016 on the right and everything connected to it |
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dnny
Joined: Mar 12, 2005 Posts: 519 Location: Helsinki, Finland
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Posted: Wed Aug 24, 2005 10:10 am Post subject:
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Pehr wrote: | Another question I have is why both b and e on the NPN-transistor is connected to ground? If I remeber right there have to be a voltage over b-e to open c-e, right? |
problem fixed.
thanks Pehr i got blind and did not see the ground - but if you use leds then you must ad ground so here is what i suggest >>>
its a bit messy but i think u all get the point
daniel _________________ Association of experimental electronics
www.koelse.org
flickr: cable porn group |
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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Wed Aug 24, 2005 10:33 am Post subject:
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hi sorry for a general electronics question , but why do the LEDs have to go to ground? its somthing I always wonder through my lack of reading books |
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Macaba
Joined: Jul 13, 2005 Posts: 160 Location: UK
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Posted: Wed Aug 24, 2005 1:40 pm Post subject:
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The IC gives out a positive voltage (whatever supply voltage you give it) to the LED, and the other side needs to go to 0v AKA ground. Like hooking it up to a PP3 battery. The + is regarded as 9v, and the - is 0v AKA ground. |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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dnny
Joined: Mar 12, 2005 Posts: 519 Location: Helsinki, Finland
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Posted: Sat Aug 27, 2005 2:31 am Post subject:
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Pehr wrote: | Could one timer be used for more than one of these sequencers at a time? like a multi-channel? |
one timer can be used to many modules - so all the modules are synchronized all in one timer.
you can also ad pot for master CV
daniel _________________ Association of experimental electronics
www.koelse.org
flickr: cable porn group |
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mosc
Site Admin
Joined: Jan 31, 2003 Posts: 18195 Location: Durham, NC
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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mosc
Site Admin
Joined: Jan 31, 2003 Posts: 18195 Location: Durham, NC
Audio files: 211
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Posted: Sat Aug 27, 2005 7:14 am Post subject:
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Yes. The transpose signal can be a keyboard, and osc, LFO, or even just a pot.
Add more 100K resistors on the left side of the drawing and you can add more things to mix in. _________________ --Howard
my music and other stuff |
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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Sat Aug 27, 2005 7:55 am Post subject:
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yeh i think if you plug the sequencer into both oscilators and adjust the osc pitch while sequencing you get crazy layerd results |
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Macaba
Joined: Jul 13, 2005 Posts: 160 Location: UK
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Posted: Tue Dec 27, 2005 5:35 am Post subject:
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I'm going to draw up a PCB for this, i just need one thing confirmed:
I don't have any DIP switches around (AKA Piano switches) could somebody confirm that the pins on the bottom of this is arranged like a 16-pin DIL package? |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
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Posted: Tue Dec 27, 2005 6:54 am Post subject:
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I'm not sure what you mean by DIP switches Mac. _________________ What makes a space ours, is what we put there, and what we do there. |
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Macaba
Joined: Jul 13, 2005 Posts: 160 Location: UK
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Posted: Tue Dec 27, 2005 5:09 pm Post subject:
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Indeed, after checking, it seems they are called DIL switches which answers my question rather well. Seems getting "merry" at christmas hurt a few brain cells. |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
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Posted: Wed Dec 28, 2005 2:00 am Post subject:
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Ya Dil _________________ What makes a space ours, is what we put there, and what we do there. |
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dnny
Joined: Mar 12, 2005 Posts: 519 Location: Helsinki, Finland
Audio files: 8
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Posted: Fri Jan 06, 2006 1:12 pm Post subject:
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Macaba wrote: | Indeed, after checking, it seems they are called DIL switches which answers my question rather well. Seems getting "merry" at christmas hurt a few brain cells. |
sorry about the DIP/DIL confusion - is just that the vocabulary at my work uses the word "dipping" (in Finnish "dipata")- every time we set up a address of some lights whit these DIL- switches so it got me confused ... sorry.
Macaba have you breadboarded this design?
because it acts wierd whit the toy i have. so it might not function perfectly...
daniel _________________ Association of experimental electronics
www.koelse.org
flickr: cable porn group |
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Macaba
Joined: Jul 13, 2005 Posts: 160 Location: UK
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Posted: Fri Jan 06, 2006 1:39 pm Post subject:
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I have not breadboarded it yet, but it looks like I will then, and i'll test it out in every way I can to try spot bugs.
I've been trying to snatch minutes here and there to build a soundlab, and its my intention to add on the sequencer so when I get to that stage, expect the sequencer pcb. (Hell, i might get bored soon and do it tonight )
Mac |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
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Posted: Sat Jan 07, 2006 9:24 pm Post subject:
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I've been playing around with this circuit and have noticed a couple of points which aren't obvious from the current schem.
1. The clock inhibit (pin13) needs to be held low otherwise it will float which may inhibit the sequence.
2. The reset on step switches do need to be a rotary so that the reset is held low except when you want it activated. Otherwise you'll get a floater which will repeatedly reset when you don't want it.
I'm about to add a second 4017 and a 4011 (4*2I-NAND) to cascade them for a 16 step.
Looks like I'll be doing a stripboard of this soon. _________________ What makes a space ours, is what we put there, and what we do there. |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Sun Jan 08, 2006 3:02 am Post subject:
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Well I went with a 4081 (4*2I-AND) though I'm sure you can get similar results with some nand gates.
Anyway, it's flashing through a 16 step sequence even as we speak, er,,..... type.
I'm gonna have another look at the schematic publisher to see if I can draw it for ya. _________________ What makes a space ours, is what we put there, and what we do there. |
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Macaba
Joined: Jul 13, 2005 Posts: 160 Location: UK
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Posted: Sun Jan 08, 2006 3:43 am Post subject:
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Ok, go for it. I've pretty much drawn up the 8 step as a PCB, It could be nice to have the option of 16 steps on the same pcb (even though its alot more IC's!) |
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Macaba
Joined: Jul 13, 2005 Posts: 160 Location: UK
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Posted: Sun Jan 08, 2006 3:48 am Post subject:
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Uncle Krunkus wrote: |
2. The reset on step switches do need to be a rotary so that the reset is held low except when you want it activated. Otherwise you'll get a floater which will repeatedly reset when you don't want it. |
Could we add a 100k resistor to ground at Pin 15, so its held low until a high signal is sent (and that goes to pin 15, which hopefully has a lower resistance than the 100k to ground.) |
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