well this aint nothing special but it does function very effectively, so after some tried and true breadboarding i got a few things accomplished.
http://www.geocities.com/austenfantanio//mytrem.htm
my good buddy got into electronics and bought himself one of those nice kits at ratshack. well anyway, i have been educating him and also working on my own stuff. so i am hoping to get some new stuff rollin out soon. built in speakers and such.
Cool Ansil!!!
Just happened to be havin a 555 or two..I'll see what I can whip up here in a 'few'...
you one cwazie Dude'man...Thanks for being YOU !!!
Cool :D
Quote from: petemooreCool Ansil!!!
Just happened to be havin a 555 or two..I'll see what I can whip up here in a 'few'...
you one cwazie Dude'man...Thanks for being YOU !!!
i try.. thanks :lol:
BIG DADDY [output 'galore]> MiniBooster [J201 Muamp]>AMZ Tone Control !!!!!!!!!1 Just got it in the box and gonna try it after Dinn Dinn...
I got em' 'urethansulated [surrounded in insulating urethane], so I can try 'moduels' combo ckts etc.
Three wires and that one's [ckt] out...this one's in!!!
Quote from: petemooreBIG DADDY [output 'galore]> MiniBooster [J201 Muamp]>AMZ Tone Control !!!!!!!!!1 Just got it in the box and gonna try it after Dinn Dinn...
I got em' 'urethansulated [surrounded in insulating urethane], so I can try 'moduels' combo ckts etc.
Three wires and that one's [ckt] out...this one's in!!!
i came up with an interesting way to wire things. you take a nice sized piece of dowel rod and you put the chip on the back of it. and anyway you take and arrange all of yoru parts accross the dowel then put a piece of maskign tape backtehre solder it all up cut off excess dowel and heat shrink it.
Sounds like something Idda thunk up ... But I didn't...Kool...
wow nice i wanna try...
gotta get to the Rat Shack to pick up a 555 :-D
couple of tweaks i forgot to add lastnight. you can change the cap in it to get a different overall freq range. personally i like the 4.7uf with the 100k pot as it gave me a nice sound. but you could also put another cap in there with maybe a three way switch so it would give you either one and a parralle or a series combination.
a 1uf gets pretty fast. and a 100uf gets way to slow, for my tastes.. but you never know.also if you use the 1meg instead of a 100k pot you can even get choppy type wave forms out of it without changing the cap. and i didnt' use a pot on the setup of it. i used a aprox 120k resistance on the ldr. that is what i liked but some might want a little smoother.the ldr i had was about four times higher than the 120k resistance.
so it was a good drop for me. also you could use a transistor or a dual opamp to drive the circuit. my test circuit was to buidl a 555 oscilator and i got a nice smooth tone around the guitars a string and dumped it into a lm386n-1 in bridged mode into a 100k pot with the ldr beign inbetween the 555 and the 386 so i would surely need some sort of gain stage before the trememlo.
i am thinking of making this into a trem/distortion leveler. so it changes the gain in the distortion circuit as well as tremelo
I tried it a few times with different IC's one marked TL555, the other was from RS and the packge sedd 555 TIMER.
It was lightin up the LED there, and one I had in it I could vary the brightness from fairly dim to about off ...
Well I tried the LED's in both ways just in case it was different than the usual [flat side toward Gnd for lighting?]...
I messed with it for a while and rememed someone saying there's different types of 555 TIMERS? Maybe I'll try it again tomorrow but I dunno...seemed to check out pretty good...
Quote from: petemooreI tried it a few times with different IC's one marked TL555, the other was from RS and the packge sedd 555 TIMER.
It was lightin up the LED there, and one I had in it I could vary the brightness from fairly dim to about off ...
Well I tried the LED's in both ways just in case it was different than the usual [flat side toward Gnd for lighting?]...
I messed with it for a while and rememed someone saying there's different types of 555 TIMERS? Maybe I'll try it again tomorrow but I dunno...seemed to check out pretty good...
i used a ka555 that was what came with the kit.
Kinda wondrin' thar fro a minute, 'till I decided soemthing might be up with that...
SO where'a KA 555...?
No biggie Ill see what NTE has and I still have the ckt built. ...since I don't have the part and all, I can say for absolutely, positively, certain that the ckt is 100%-1,000% Correct in all probability!!! lol
Well NTE comes up with a number...which opamps 'sounds' best in this circuit?...The one that makes it work !!! lol...I must have missed the post that said you need a 'special' 555 type IC to get it running.
hmm let me check and see if i mis drew it. i dont' think i did i mean it was late when i was workin on it and stuff but it should be working fine. the ka isnt' special by no means its jjust a generic one ratshack has in there kits.
i am a big dummy it is uploaded agian i mis drew the capacitor connection points it connects to the second pin and to ground.. duhhhhhhhh
I doubt it matters what op amp this has, I think it would sound just as good with any.
For anyone who is completely crazy, you could make a second 555 section (hell, that will cost almost a dollar!) and have TWO leds both shining on the LDR, then you can get some complex rhythms going!
(watch out 4MS.... only kidding)
Hmmm. I ripped a 555 of a LED chaser yesterday. Now to get my hands on an LDR :)
What's Pin three do?
We'll get it again.
Maybe you could redraw it?
You're precisely Right Paul Perry...
As soone as I get blinky #1 going I can get blinky #2 started [I have at least two 555's here].
I was thinking along the lines of two LED LDR's one on one Fuzz the other one on something different [EQ wise or etc]...then mix the two back in at the 'end'.
Have 1 tremolo on the output of a 'twin chain' with the 'one' side doing something 'crazy'.
Do they make snap in/snap out LED bezels?
ya take this ckt put it in a box, have yer LED' on a cable w/plug, add switch+LDR ckt so LED can be plugged in...to whatever you decide to add this to...
Whatever pedals you decide to convert with the switched in LDR ckt.
By the way how many LEDS can you run from one timer?
I don't know whether I should keep trying.
No biggie, lights right up. Went through a couple LEDS somehow...had them lightin' there for bout a minute.
Maybe if this schem get verified I'll go through with the DMM and find the problem, or whip up another...hard to say though...maybe both timers got tried with the other connection did something to them they;ve never been known to like?
Perhaps you could check it again again for me? also I'm connecting the flat ridge of the LED to the ground point....[???].
This is actually similiar to one of the designs I had for the trem/ring mod I'm working on, but I ditched the 555 and the LDR for an LFO and a ???. Interesting how you implemented the swell, though...
-Colin
It would be too cool if I could figure to get it working.
Anyone had success? I'm waitin' till some feedback comes before I continue////
Quote from: petemooreI don't know whether I should keep trying.
No biggie, lights right up. Went through a couple LEDS somehow...had them lightin' there for bout a minute.
The only way to destroy a led, is to leave out the series resistor. Can a 555 timer output supply enough current to fry a led without a current limiting resistor? i think so..!
As for how many leds you can run from a 555, certainly more than one.
Either in series, or paralleled with individual protection resistors.
ok petemoore pin three is the output that drives the led.. you should probally use a limiting resistor i forgot to include this as i had one prewired up inline in heatshrink so i kinda forgot about that..
verry cool idea of having two of them. i didnt' think about that.
thanks collin, i appreciate that. i basically modde one of my old audio to do a trem type thing. its kind of a low fi thang.. lol
again with the led, you are right on the money there paul i forgot to add that in the schematic. other than that it is correct on the schematic. by the way i used a 1k for my resistor
Thanks ! I should be able to get it going then...I'll redouble check I got everything wired right with the DMM and stick another timer in there.
yeah sorry about that petemoore. i didnt' realize i had left that out.
Quote from: smoguzbenjaminHmmm. I ripped a 555 of a LED chaser yesterday. Now to get my hands on an LDR :)
do you need an ldr, i got a couple of extras from ratshack
i am getting a few boards madeup for the tremelo, anyone want one. you can have it for cost.. basically to cover my shipping and cost on the boards and to ship it to you is about 2 dollars each. if i order 10 which is what i planned on doing.
drop me an email and let me know if you want one.. or reply here and i will get the ball rolling if i can get atleast five people interested
Quote from: Paul Perry (Frostwave)For anyone who is completely crazy, you could make a second 555 section (hell, that will cost almost a dollar!) and have TWO leds both shining on the LDR, then you can get some complex rhythms going!
Well, don'tcha think three would be even better... or, hey... isn't there a quad version of the 555?
How about two tremolos, a disto, and... um... an optical wah like the soul kiss, or something? All in the same box with switching to sync some of them, all of them, or none of them! :shock: 8)
~ Charlie
hey why not while we are at it lets replace the led with a little glass bulb and that way we can have a little delay in the cutoffs or perhaps a christmas tree light i will have to try this tonight. what about using a a cmos 4049 so we could have an overdrive a feedbacker a compressor a auto wah and expandor. what else could we do.
Here is another idea: use two circuits and two LDRs, in paralled but with one output for each LDR. Use a dual pot for the speed pot, to control both speeds at the same time, but put a resistor in one to get a difference in tremolo time. With the right resistor value, you will get a stereo panner.
...then run fiber optics from the 4 LEDS (have to be different colors) up to the cover of the box...
Quote from: Hal...then run fiber optics from the 4 LEDS (have to be different colors) up to the cover of the box...
actually i have a fiber optic circuit..
finally got mine working last night!
pretty much, my problem was the cap connected to pin 3...I didn't read Ansil's followup until last night.
Now I'm using a 47 uF cap, and 10k resistors for both R1 and R2. This gives the LED an off time of about (exactly?) half the on-time. I'm using the little silver radioshack LDR, the smallest of the ones that come in the variety pack. It has dark resistance of about 50-100k, but i need new batteries for my meter.
I'm using a green rectangular diffused LED, that i ripped out of a floppy drive at some point. I tried it on a breadboard, at night. So it was dark, but not pitch black. No paralell resistor, but with about 3" between the LED and LDR.
NPN boost before.
it soudned pretty sick. Didn't quite fade all the way, which is awesome. Good sweep, and good speed, even though its hardwired. THe best part was the swell, though. I was able to play on the beat as the LED was turning on, and got a really really cool swell effect.
Thanks to all that helped. Now I'm just depating on wheterh or not to perfboard this one. Only problem is a very slight, but audible click as the LED turns on and off.
Ok, now for the newbie questions...
You show a "gain stage" before the curcuit... Is this basically any boost curcuit? I am sure the conversation about the best ones are in another thread somewhere. Would you have an additional volume pot then? Can I connect the + side of the battery to both curcuits or do I need 2 batteries?
Thanks for putting up with beginners :)
yes, yes, yes, and yes :-D
no, you wouldn't _have_ to have a volume pot, but you could. I would suggest a gain of about 2, if not. Depending on the LDR, more or less gain might sound better - more intense effect. And yes, you can use the same battery...unless this is the reason i'm getting clicks on the output....
I'm sure it's in there but...
What we're talking about is putting the LDR Inline with ckt signal output?
The only thing I could see schematic wise is on the remote control page where it uses two LDR's like a volume pot the leads of the LDR's tied together and forming the 'wiper'...with many added pots and suches as that...
Could someone explain for Dummy [me] exactly how the LDR are wired to get tremolo?
I tried one yesday...two LDR's with 100k's on them, each LDR/R pair having one leg tied to the other forming the wiper of the 'volume pot'...the other 'lugs' [leads of the LDR/Rvol ckt] connected like lugs 1&3 of the pot it replaced.
I cut the 'top' [signal side] 100k resistor off of the LDR, and was getting a usable boost function by covering that LDR...the 'bottom' [to ground] LDR didn't seem to do much of anything....it didn't go all the way down, but would be useful as a trem. [I don't use that much full depth tremolo anyway]...it was put after a Blackfire stage...
Ok so...I've typed what I can about what I think I know...am I missing something?
Thanks for all the fun!!! Makes a great 'person attracter'...just put it in a transluscent white plastic bag and set it out in a dark place...ppl just can't resist the [green LED] blinking bag...fun party trick when you're expecting guests...lol
yep thats why i was using a gainstage before it.. :lol: :lol: :lol:
i acutally have something prety close to that on a piece of paper some where, only i never really filled in any values, just the basic drawing... i've been meaning to order some 555's