WTF. Pretty much sums it up! Madbean doombutter with some fantastic and highly functional mods.
(http://i892.photobucket.com/albums/ac124/digthebigrigg/WTF_zpsdb64ed67.jpg)
(http://i892.photobucket.com/albums/ac124/digthebigrigg/WTFGutshot_zps8512d88c.jpg)
Left switch is the standard "fuzz lift" mod. Gives you a very light OD sound or fairly high gain fuzz.
Center swtich is the Feedback on/off. When on it activates the FDBK knob. Giving you....
Delay repeats! No more one repeat only. You can get 8 to 10 audible repeats and they slowly trail off for a very natural decay/reverb effect. The knob is very functional. All the way CCW for trailing repeats like a classic delay. Slowly turning CW and it begins to enter the FDBK realm but completely controllable without oscillation. Past 1 o'clock and it gives you the noise "wash" where you can play over the last line and it will slowly take over and begin to "swash" until you play the next line and so on. Of course fully CW and you get into nutty oscillation fun.
The right switch toggles between the inner (standard) LDR and the exterior I placed to the right of the foot switch. This is awesome fun. With your foot, you can totally control the tracking, warble, pitch shift effect AND with the feedback combo you can change each repeat differently. It adds so much more to the pedal's ability and it's completely musical and controlled. (in a WTF kind of way)
Turn the blend knob for total wet signal and then use the LDR/FDBK combo for some completely unique sounds and effects.
I remember people asking "how to get more repeats?" from this guy. This mod does it very well.
Thanks to Madbean as always and enjoy!
holy #!%!@#, this is aces. Also: pink sparkle.
Boldness.
Great mods, man. I love the external LDR. I'm going to have to use that sometime.
Nice! How do you wire up that feedback mod? Are you just connecting the output back to the input through the switch and pot, or is it more clever than that?
Now THAT is flexibility! Waterslide?
Quote from: lincolnic on September 20, 2012, 03:33:01 AM
Nice! How do you wire up that feedback mod? Are you just connecting the output back to the input through the switch and pot, or is it more clever than that?
+1 on this question!
That there is one damn fine build sir!
Everyone knows real men wear pink ;)...
Awesome build. Would love to know how to get more repeats. Out with the details! ;D
Yes! Details!
Hey all, thanks for the comments. Sorry for the delay. Work, work, work....anyhoo
The feedback control.....first I attached the transponder flipper doodle to the zapper mosfet to rectify the......nawwww, it's just a 1 mg A(log) pot from input to output that is switchable. BUT I did find it was the LOG audio pot that worked far better than linear. As simple as it is, it works perfectly. My little o'l brain did actually think....if this thing only repeats once, and I can send the feedback through it, the signal will degrade or become quieter each time...then giving a trailing delay or infinite repeats. Ta Daa! It will.
OH and yes,, box is waterslide for graphics.
Please send paypal donations to me at feedbackgenius.com
Awesome job! You figured out how to do what I've been wanting with this circuit.
Wtf is right
Thats awesome, thanks for posting. Did you use the standard doombutter pcb or a different one to apply the mods.
I have a functioning doombutter which i am very happy with and reading about your mods makes me want to take it apart and redo it.
Also what enclosure is that, it looks bigger than a 1590b
Quote from: midwayfair on September 20, 2012, 01:49:14 AM
holy #!%!@#, this is aces. Also: pink sparkle.
Boldness.
^this
Looks awesom... + pink sparkles make any pedal sound better, it's a fact
I love feedback loops, I use one a lot on my true bypass KROK style looper. Damnit, now I gotta build this one to.
Great work!
Quote from: Hangingmonkey on January 27, 2013, 01:11:43 PM
Thats awesome, thanks for posting. Did you use the standard doombutter pcb or a different one to apply the mods.
I have a functioning doombutter which i am very happy with and reading about your mods makes me want to take it apart and redo it.
standard pcb from Madbean that I etched. Enjoy, crazy extra fun and flexibility with this one.
Quote from: Hangingmonkey on January 27, 2013, 02:09:52 PM
Also what enclosure is that, it looks bigger than a 1590b
Its a 125B. Gives you a little bit more height which was needed. Hard to get all that "What The" in a 1590B.
Good luck.
Thanks
Can someone explain the wiring of the feedback to me a little clearer, I am good at following directions but I have not yet gathered the comfort thinking conceptually with effects circuits.
Dude, can we get a demo of the WTF'ness? That would rock. Great build!
Bigrigg was kind enough to help me with the feedback mod a while back. Here's a crap illustration I made of how to wire it up.
(http://img.tapatalk.com/d/13/04/07/e5eja9y8.jpg)
Nice job. Good thing there weren't more mods or you'd have run out of box!
Hey Bigrigg
It might be my eyesight but is your regulator transistor facing the opposite direction to what the build doc shows?
I'm having issues with my circuit and I think it's the transistor so was just wondering if turning round might help. A long shot I know.
Quote from: Rip57 on April 07, 2013, 05:42:03 PM
Nice job. Good thing there weren't more mods or you'd have run out of box!
That's what she said!
I'm sorry, but I couldn't help my self..... I know I know.... Smile!
Thanks for posting up the diagram guybrush
Guybrush, thanks man!
Is the SPST necessary? Couldn't you just turn it all the way counter clockwise for single repeats?
No worries.
I'm really not sure. I remember asking Bigrigg something similar and there was a reason for the switch but can't quite remember what it was. Hopefully he'll show up again on this thread and she'd some light.
I've not actually tried the mod myself yet but the switch is actually a SPDT (not SPST). Should it be on/on or on/off?
Hey all, Im alive. Sorry life has thrown some major curve balls my way. I will look the posts over and answer asap within the next little while for sure. Thanks for the interest.
Quote from: Jabulani Jonny on April 06, 2013, 09:27:26 PM
Dude, can we get a demo of the WTF'ness? That would rock. Great build!
I would love to but....I'm literally starting a new position with work tomorrow, travelling for work etc, selling our current house bla bla. I can answer any questions, but a demo won't be possible for quite some time. Sorry. It hurts me more as I have Pro tools etc and can't get to use it and play with the toys.
Looks so cool.. I love mine and I can only imagine a LDR would be an awesome addition.
Does your fuzz lift actually take away all the breakup? I heard that there is still some clipping even with the "lift mod" done. I have one I made a few months back and would love to incorporate a fuzz lift only if it cleans up. Thanks for any info on it.
Guys, I am looking at the v1 plan. I am now trying to solder my capacitors and i noticed that only the electrolytic ones have a +/- designation, how can I tell which is the +/- for the ones that aren't marked on the sheet?
Quote from: dulcetpine on April 14, 2013, 03:29:55 PM
Guys, I am looking at the v1 plan. I am now trying to solder my capacitors and i noticed that only the electrolytic ones have a +/- designation, how can I tell which is the +/- for the ones that aren't marked on the sheet?
Normal caps aren't polarised. You can solder them in either way. :)
Awesome pedal.
Where the hell did the name Doombutter come from?
I think it's what Norwegians put on their toast.
;)
Sent from my Nexus 7 using Tapatalk 2
Quote from: Hangingmonkey on April 07, 2013, 09:35:02 PM
Thanks for posting up the diagram guybrush
ditto that.
Thread is sweet too. It answered all my questions before I even asked. I just ordered this board with the fuzz lift and I think she's gonna get a nice feedback mod too. So, all I need to add to the parts list is a A1M pot and a SPDT mini toggle to hook into my stomp switch? (Sorry, I guess I had one question left).
Quote from: selfdestroyer on April 10, 2013, 07:50:41 PM
Looks so cool.. I love mine and I can only imagine a LDR would be an awesome addition.
Does your fuzz lift actually take away all the breakup? I heard that there is still some clipping even with the "lift mod" done. I have one I made a few months back and would love to incorporate a fuzz lift only if it cleans up. Thanks for any info on it.
Fuzz mod leaves a slightly dirty signal, just on the verge of break up. You can work the volume knob and strength of picking to effect it more or less. I think I mentioned in OP it's not totally clean.
Good luck.
Quote from: Guybrush on April 07, 2013, 08:48:12 PM
Hey Bigrigg
It might be my eyesight but is your regulator transistor facing the opposite direction to what the build doc shows?
I'm having issues with my circuit and I think it's the transistor so was just wondering if turning round might help. A long shot I know.
Hey there, unfortunately (for you) the trans is just like the docs. No secrets or reversals there.
Good luck.
By the way, I wanted to post this because I am still in shock that I built this and got it to work on the first try, but I did! This build was my first attempt at pedal construction and everything I did to put it together was the first time so I was slow, deliberate, checked everything 10 times before soldering or cutting wire, checking components... drilling! But it was great fun. I took some photos that I will include later.
I will add that when I first fired it up i didn't think it worked because I plugged it into the front of my amp that had two cables going into the effects send/return but nothing plugged into them so there was a break in the chain, but once i figured out that bone head mistake she sounded gorgeous!
Quote from: dulcetpine on April 16, 2013, 12:10:24 PM
By the way, I wanted to post this because I am still in shock that I built this and got it to work on the first try, but I did! This build was my first attempt at pedal construction and everything I did to put it together was the first time so I was slow, deliberate, checked everything 10 times before soldering or cutting wire, checking components... drilling! But it was great fun. I took some photos that I will include later.
I will add that when I first fired it up i didn't think it worked because I plugged it into the front of my amp that had two cables going into the effects send/return but nothing plugged into them so there was a break in the chain, but once i figured out that bone head mistake she sounded gorgeous!
the fact that it is your first build makes it all the more impressive. Great job!
Quote from: dulcetpine on April 16, 2013, 12:10:24 PM
By the way, I wanted to post this because I am still in shock that I built this and got it to work on the first try, but I did! This build was my first attempt at pedal construction and everything I did to put it together was the first time so I was slow, deliberate, checked everything 10 times before soldering or cutting wire, checking components... drilling! But it was great fun. I took some photos that I will include later.
I will add that when I first fired it up i didn't think it worked because I plugged it into the front of my amp that had two cables going into the effects send/return but nothing plugged into them so there was a break in the chain, but once i figured out that bone head mistake she sounded gorgeous!
Youre not the only one. Ive been building pedals for nearly 2 yrs now and the send return on the amp still always gets me
First pedal build ever, worked on the first try. Very proud. I used the feedback loop mod and I have to say it really makes it a very musical pedal. I had to use a 1M B pot for the loop because radioshack didn't have the type A pot, but it works fine, just touchy. They also only had a HUGE pot so I figured I would use a huge knob for it, it actually improves the overall aesthetic IMO. I find that modification to be very interesting, and I now have it first in my chain. The oscillations start when I lower the volume on my guitar which makes it very expressive... I love this pedal.
(https://sphotos-a.xx.fbcdn.net/hphotos-frc1/919176_10151578687120751_721091709_o.jpg)
As promised.
(https://sphotos-a.xx.fbcdn.net/hphotos-ash3/920545_10151578687085751_1085544177_o.jpg)
Awesome. That's the best, when it works on the first try. It's a pretty good feeling.8)
Sent from my Nexus 7 using Tapatalk 2
That's a lot of knobs on that boy
Quote from: jimilee on April 25, 2013, 02:51:54 AM
That's a lot of knobs on that boy
I drew some iconography on there with sharpie so i knew what they were, but I did not photograph that.
From Left to Right
TOP: Volume, Depth, Tracking
MID: Wet/Dry, Delay Time
BIG: Feedback
Switches: Top=Fuzz Lift, Bottom=Feedback Toggle
Quote from: dulcetpine on April 25, 2013, 10:36:14 AM
Quote from: jimilee on April 25, 2013, 02:51:54 AM
That's a lot of knobs on that boy
I drew some iconography on there with sharpie so i knew what they were, but I did not photograph that.
From Left to Right
TOP: Volume, Depth, Tracking
MID: Wet/Dry, Delay Time
BIG: Feedback
Switches: Top=Fuzz Lift, Bottom=Feedback Toggle
Does your fuzz lift clean up the signal 100% or is it still a bit dirty?
Quote from: selfdestroyer on April 25, 2013, 05:06:40 PM
Does your fuzz lift clean up the signal 100% or is it still a bit dirty?
Difficult to tell since I normally have an OD pushed later on in the chain. I would say it is clean enough... I do notice that it isn't as expressive/glitchy without the fuzz which is a little disappointing, but not the end of the world because it still sounds amazing.
Quote from: Guybrush on April 08, 2013, 05:51:03 PM
No worries.
I'm really not sure. I remember asking Bigrigg something similar and there was a reason for the switch but can't quite remember what it was. Hopefully he'll show up again on this thread and she'd some light.
I've not actually tried the mod myself yet but the switch is actually a SPDT (not SPST). Should it be on/on or on/off?
All the way counter clockwise is still giving some "extra" reverb/delay effect. Especially with the volume knob position higher up. I forgot to mention that they are very interactive. The feedback and volume knobs. With the feedback off (standard build) you get that perfect one repeat only. Engage the mod and it's really a case of how much you want to add, but not starting at exactly ground zero. Make sense? The fuzz lift mod will need much more volume knob added to get the extra repeats. Good luck everyone.
Guys help me out, I built a second one of these for my brother because he loved it. After assembly I tested it out and it worked fantastically. I gave it to him and he brought it to practice and he started getting distortion constantly. I troubleshooted this and found the PT2399 was bad, I put a new one in and figured it was a lemon component, tested it and it sounded fantastic. I gave him a standard boss power supply just incase the one he was using wasn't proper.
He just brought it to practice and aparantly he is having the same issue which is leading me to believe there is something wrong with another component elsewhere in the build. The thing is, it sounds awesome when it is working.... can ya'll give me a strategy for finding what the real issue is?
Thanks kids!
Quote from: dulcetpine on May 14, 2013, 12:16:16 AMGuys help me out, I built a second one of these for my brother because he loved it. After assembly I tested it out and it worked fantastically. I gave it to him and he brought it to practice and he started getting distortion constantly. I troubleshooted this and found the PT2399 was bad, I put a new one in and figured it was a lemon component, tested it and it sounded fantastic. I gave him a standard boss power supply just incase the one he was using wasn't proper. I just finished one of these, I'm using a godlyke power all. No issues so far
He just brought it to practice and aparantly he is having the same issue which is leading me to believe there is something wrong with another component elsewhere in the build. The thing is, it sounds awesome when it is working.... can ya'll give me a strategy for finding what the real issue is?
Thanks kids!
It's possible the regulator is bad killing the delay chip....I've heard stories of the 7805 getting really hot and failing...maybe swap that out with another, or check that it's only giving out 5 volts with a dmm
Quote from: ch1naski on May 14, 2013, 02:30:53 AM
It's possible the regulator is bad killing the delay chip....I've heard stories of the 7805 getting really hot and failing...maybe swap that out with another, or check that it's only giving out 5 volts with a dmm
This was also my first thought, I will try this tonight. Thanks!
Guys, I built two of these pedals and they both are suffering similar fates. There aren't any delays on clean mode, and with the fuzz on I get one buzzy repeat that doesn't seem to react to the delay time pot. There is also a crackle and pop akin to a vinyl record.
I am going through pt2399 chips and I do not know why. The 7805 seems okay, so what else could I look for?
Quote from: dulcetpine on May 30, 2013, 09:37:22 PM
Guys, I built two of these pedals and they both are suffering similar fates. There aren't any delays on clean mode, and with the fuzz on I get one buzzy repeat that doesn't seem to react to the delay time pot. There is also a crackle and pop akin to a vinyl record.
I am going through pt2399 chips and I do not know why. The 7805 seems okay, so what else could I look for?
have you checked that the 7805 is putting out 5 volts? or that the pinout is correct? I know you said it seems to be okay, but that's the only thing I can see ruining your pt2399
I did check it and it seems to, however this sort of thing happens over the course of 15 minutes as the sound degrades. I soldered the 7805 direct to the pcb, so I removed it and socketed a new one in it's place as well as added a new pt2399. Sounds great right now, I will let you know how it goes.
Quote from: dulcetpine on May 31, 2013, 11:36:28 AM
I did check it and it seems to, however this sort of thing happens over the course of 15 minutes as the sound degrades. I soldered the 7805 direct to the pcb, so I removed it and socketed a new one in it's place as well as added a new pt2399. Sounds great right now, I will let you know how it goes.
how was it? was this problem solved?
usually, on all my pt2399 based builds.. they don't seem to last that long.. i had two rebote2.5 delays.. they worked quite well..but after a couple of months, they just die out.. it seems like they have a limit or sumthing..
my pt2399's are bought locally and from hongkong.. haven't really tried to put it in a "controlled" test though.. so i don't know which ones are bad..
any updates with your problem? :-\
Quote from: dulcetpine on April 25, 2013, 12:55:40 AM
First pedal build ever, worked on the first try. Very proud. I used the feedback loop mod and I have to say it really makes it a very musical pedal. I had to use a 1M B pot for the loop because radioshack didn't have the type A pot, but it works fine, just touchy. They also only had a HUGE pot so I figured I would use a huge knob for it, it actually improves the overall aesthetic IMO. I find that modification to be very interesting, and I now have it first in my chain. The oscillations start when I lower the volume on my guitar which makes it very expressive... I love this pedal.
I have 2 questions. What size pots are those? And did you ever figure out your problems you were having?
Those look like 16mm pots