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DIYstompboxes.com  |  DIY Stompboxes  |  Building your own stompbox  |  tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO  (Read 145520 times)
deadastronaut
Posts: 9540


Rob H. LONDON


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Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #640 on: March 23, 2011, 06:52:34 PM »

hmmmm...im sure it would have to be between the in/out  and the switch....hmmmmmm......

maybe someone more knowledgable could chime in here on this.. icon_wink

glad your enjoying it though...cool. its nice to hear success stories on this...nice one .. icon_cool

i'm busy at the moment trying to suss out a sine wave schematic for my other current project...the 'pulsewah'....cant wait to get it going/finished..i love the sound of it.. icon_twisted
check it out...i built one on pcb..but the @#$%er ticked...so am approaching it from a different lfo..pulse..i'll get there one day...like the tiny trem these things take time to get right...ish.. icon_mrgreen
http://www.diystompboxes.com/smfforum/index.php?topic=88582.0
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Ratbones
Posts: 33

Drew C.


Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #641 on: March 25, 2011, 12:58:21 PM »

So I've got this all thrown together finished and in an aluminum hammond style enclosure, but with a 4069 triangle wave LFO.

I've got a very quiet ticking and buzzing, which sucks... (Probably inherent in my LFO choice; I should've just gone with the 555 LFO). Anyhoo, I'm wondering what proper preocedure for enclosure grounding is. If I touch bare metal on the enclosure, it buzzes, which makes me think maybe I should ground it. This is my second pedal, so I'm new to this, and I've never really heard whether enclosure grounding is proper or not.

Advice?
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pinkjimiphoton
Posts: 4845


"it's got YOY" jimi in manchvegas


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Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #642 on: March 25, 2011, 02:32:57 PM »

hey bro, just ground the circuit  to the ground lug on one of the jacks, and you should be good to go...and, if it's anything like the one i built, that should take care of the ticking, too..good luck! if ya still have issues, and are in the states, go to rat shack and get the proper 555, and you should be good to go! be careful, rat shack stocks two of them, both cmos, but only ONE works right in this circuit...it's somewhere on this page, maybe the one before it.

have fun!
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i don't care what ohms law is, i ain't no flippin EE!!
deadastronaut
Posts: 9540


Rob H. LONDON


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Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #643 on: March 26, 2011, 10:53:35 AM »

@drew, yeah ive tried lots of different lfo's on various things...and a lot of them had noise/tick issues..too many too remember... icon_rolleyes

stick with the cmos 555 and you should be ok... icon_wink
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ppaappoo
Posts: 138



Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #644 on: March 26, 2011, 12:49:46 PM »

HI, if you try to use an audio switch FET instead LED/LDR?
« Last Edit: March 26, 2011, 01:03:13 PM by ppaappoo » Logged
deadastronaut
Posts: 9540


Rob H. LONDON


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Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #645 on: March 26, 2011, 01:00:18 PM »

hi pappoo

sounds interesting, i dont have a clue how that works though...being a dumbass!...could you elaborate?.

would the 555 turn the fet on/off then, and be variable speed controlled too...with a depth also?..hmmm...i think i'm understanding you....a bit!.
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ppaappoo
Posts: 138



Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #646 on: March 26, 2011, 01:17:43 PM »

hi pappoo

sounds interesting, i dont have a clue how that works though...being a dumbass!...could you elaborate?.

would the 555 turn the fet on/off then, and be variable speed controlled too...with a depth also?..hmmm...i think i'm understanding you....a bit!.

Not much about it but I think the EA Tremolo has something similar, is the part shown in red, it seems that Q2 is a kind of switch controlled by oscillator, that leads the signal to ground .
Try this to bypass the signal to ground and cause an sound inrrupcion like a tremolo.





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pinkjimiphoton
Posts: 4845


"it's got YOY" jimi in manchvegas


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Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #647 on: March 28, 2011, 08:13:42 AM »

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i don't care what ohms law is, i ain't no flippin EE!!
Scruffie
Posts: 1991


Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #648 on: March 28, 2011, 08:21:42 AM »

hi pappoo

sounds interesting, i dont have a clue how that works though...being a dumbass!...could you elaborate?.

would the 555 turn the fet on/off then, and be variable speed controlled too...with a depth also?..hmmm...i think i'm understanding you....a bit!.

Not much about it but I think the EA Tremolo has something similar, is the part shown in red, it seems that Q2 is a kind of switch controlled by oscillator, that leads the signal to ground .
Try this to bypass the signal to ground and cause an sound inrrupcion like a tremolo.






The FET Is working as a Variable Resistor... you can't really just take it out that design and stick it in another though, FETs are hard to use and Vary alot so getting them to run predictably and cleanly is difficult, that's why you don't see them used too often.

There are a couple of other options but the LED/LDR combo already in use here provides the simplest and cleanest solution.
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deadastronaut
Posts: 9540


Rob H. LONDON


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Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #649 on: March 28, 2011, 08:28:49 AM »

@jimi..yay!...built!.. icon_cool

@scruffie...hmmm...not as simple as first thought then!...
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Scruffie
Posts: 1991


Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #650 on: March 28, 2011, 08:36:05 AM »

@jimi..yay!...built!.. icon_cool

@scruffie...hmmm...not as simple as first thought then!...
Yeah... i'm gunna say if you had ticking problems with an LED, you'll be in for a whole world of pain with a FET.
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deadastronaut
Posts: 9540


Rob H. LONDON


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Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #651 on: March 28, 2011, 08:38:51 AM »

righto!...
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pinkjimiphoton
Posts: 4845


"it's got YOY" jimi in manchvegas


WWW
Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #652 on: March 28, 2011, 12:00:29 PM »

not to be lame/lazy, but if i increase the resistance of the depth pot, will i get slightly more throb?

i added that buffer circuit  i was working on to it, works great, but now the throbulation is really really subtle...but...in a way it's kinda cool, cuz as the guitar decays, the trem gets stronger!! kinda neat in itself, but i'd really like just a rch more to the depth...do you think a 10k or 50 may work better rob? or is it overkill? or do i need to go down, say, maybe to 1k?

thanks in advance!! i love this circuit, it's really sweet and subtle!!

edit...i tried raising and lowering the resistance in the depth part of the circuit, no difference whatsoever.

i'm thinking i'll try wiring it to the output jack instead of the input, but thinking it may pick up a "tick" in the buffer amp?

the only other thought i've got is maybe separating the led/ldr slightly, to see if that may increase the intensity of the pulse?

i await ya'll's infinitely superior knowledge on this!!  Grin
« Last Edit: March 28, 2011, 01:12:29 PM by pinkjimiphoton » Logged

i don't care what ohms law is, i ain't no flippin EE!!
Barcode80
Posts: 2250


Patrick Johnson


Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #653 on: March 28, 2011, 03:14:03 PM »

is your buffer set up as unity gain? I ask because if it is set with a small boost, then the resistance of the LDR may not be enough to kill the signal, which would explain your problem.
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pinkjimiphoton
Posts: 4845


"it's got YOY" jimi in manchvegas


WWW
Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #654 on: March 28, 2011, 04:00:56 PM »

yah, unity gain, i've been wondering if it's giving a slight boost. here's the circuit...beats me, i'm a newbe!



i have noticed that fuzzes and drives tend to overpower it...kinda neat, in a way...like a ducking trem! icon_lol
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i don't care what ohms law is, i ain't no flippin EE!!
askwho69
Posts: 679



Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #655 on: April 18, 2011, 04:17:43 AM »

Hi all! Cheesy rob iwasscanning the thread for hours! hehehe cant find the final schematic Sad hooooooooh can you repost it? Cheesy thanks i want to make this tomorrow Cheesy
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"To live is to die"
deadastronaut
Posts: 9540


Rob H. LONDON


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Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #656 on: April 18, 2011, 04:19:49 AM »

i havent a schematic, but this was the final version i built....

http://www.aronnelson.com/gallery/main.php/v/chickpea/ts555cnvero.gif.html

http://www.aronnelson.com/gallery/main.php/v/chickpea/TS555TINYTREM.gif.html
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askwho69
Posts: 679



Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #657 on: April 18, 2011, 10:32:31 PM »

thanks rob ill make a schematic for perfing Cheesy
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"To live is to die"
LucifersTrip
Posts: 2597


^^ Fuzz Skull ^^


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Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #658 on: April 19, 2011, 12:30:05 AM »

thanks rob ill make a schematic for perfing Cheesy

sounds great...please post when you are finished...
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always think outside the box
askwho69
Posts: 679



Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #659 on: April 19, 2011, 04:44:25 AM »

ohhh i wrote it in a piece of paper and then analyse the size and free-styling the perf design hehehe Cheesy
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"To live is to die"
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