Author Topic: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO  (Read 315697 times)

deadastronaut

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #820 on: December 11, 2013, 07:08:38 AM »
that is 'unverified'  i never got around to building it....build a your own risk. :)

try a 22k for wah..

and a 4.7k/5k/10k for speed.
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//

yurumbel

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #821 on: December 11, 2013, 08:26:56 AM »
Thanks man! I hope it works

monksanto

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #822 on: January 30, 2014, 04:50:17 PM »
Hi, sorry for stupid question, but I can find the 555 chip everywhere but I'm confused about which ones are cmos & which ones are standard etc? Is there a particular part number I should be looking for, such as "TLC555CP", for instance?

[EDIT: Well, I answered my 1st question, anything with a "7" or a "C" in the name is a CMOS chip!]

Also, would this optocoupler be suitable instead of separate red LED/LDR/heatshrink etc?

Thanks.
« Last Edit: January 30, 2014, 06:22:40 PM by monksanto »

duck_arse

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #823 on: January 31, 2014, 10:36:58 AM »
at 99c it couldn't hurt to try it. it is often referred to as a vactrol and has the internals you need.
"i have it exactly like that"

monksanto

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #824 on: January 31, 2014, 05:24:38 PM »
Well I snagged them on special, 50 for $20, I guess I'll soon find out if they work in this circuit!  ;)

duck_arse

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #825 on: February 01, 2014, 09:11:05 AM »
50 you say? looks like you've got lots and lots of modulation experimentation ahead of you.
"i have it exactly like that"

Mario44

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #826 on: February 04, 2014, 12:08:11 PM »
Very good idea.
Just build one for testing and got fried 2 leds on it :D
edit: didn't mean mods, just stock version
« Last Edit: February 04, 2014, 12:34:06 PM by Mario44 »

duck_arse

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #827 on: February 05, 2014, 09:33:04 AM »


@mario - if using the circuit above, put a resistor 220R will do, between each of the D1 and D2 led K and ground. this will then provide some current limit if you wind the trimpot all the way. no more blowing leds.

you must always have a current limit resistor for a led, unless it's as a clipper circuit, where the current will be constrained by other factors.
"i have it exactly like that"

Mario44

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #828 on: February 05, 2014, 12:43:07 PM »
Yes, finaly I've put any small resistance there and new LEDs after I burned old ones :icon_lol:

Jdansti

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #829 on: February 05, 2014, 02:47:19 PM »
Sorry-I should have thought of that. I think I made VR2 variable to be able to adjust the brightness of the indicator LED, but it really is overkill.  A fixed 1k-4.7k should be fine for VR2.

I haven't burned out the LEDs (yet), but a small resistor in series with VR3 is a good idea. Just make sure you still have enough light to activate LDR1.
R.G. Keene: EXPECT there to be errors, and defeat them...

Mario44

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #830 on: February 05, 2014, 03:06:58 PM »
BTW, what type of LDR do you use? Whats their resistance when max and min light is on it?

Jdansti

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #831 on: February 05, 2014, 05:08:30 PM »
I just used a generic LDR from Tayda like this:
http://www.taydaelectronics.com/catalogsearch/result/?q=LDR

If I remember correctly, the dark reading was around 1M or more and the lighted reading was around 200R-400R. One reason I used an external pot for VR3 was to allow for a little fudge factor in the LED and LDR specs.

I coupled the LED and LDR with black heat shrink tubing.
R.G. Keene: EXPECT there to be errors, and defeat them...

jokersmile32

Re: tiny tremoloOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
« Reply #832 on: March 01, 2020, 03:46:17 AM »
exclusive to diystompbox...its nice to give something back!...even if its simple :icon_rolleyes:

hi guys....been twiddling with bits again..'oh no not again i hear you all cry'!!!!...... :icon_rolleyes:
heres a very very simple one knob tiny tremolo?. it works great!..and is only 6 components.....thats it!..
i started off wanting to control the speed of a 555 with led..then i thought well why not use an ldr to break the
sound up...here ya go!.....be nice with a chorus /delay....im quite pleased with it...its my first 555 project ever!.
so be kind... :icon_redface:
SOUNDCLIP...
http://dl.dropbox.com/u/7464107/tinytrem1.mp3




ive still got it on a tiny breadboard but the above vero will work...going to try a dimming mod too...as well as on and off..
for hard or soft...

 i know there are plenty of tremolo's much better than these out there to build ,but i enjoy the pain and pleasure
of creating!!!!i find it much more rewarding than simply copying....thanks for stopping by.. :icon_cool:




Where is the Vero layout???

Kipper4

"Duck_Arse
otherwise, you might end-up with SOIC or gullwings, for surface mounts."


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/