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Looking for recommendations for delay pedals that interact well with a KROK feedback looper.
Schematic below

I've tried a number of commercial and DIY (PT2399) pedals that do nothing when the feedback pot on the KROK is turned up. I'm aware everything in the signal path makes a difference. For example, with a filter in front of the KROK, sometimes things are more tame.
Wondering if anyone has any positive experiences they can share. Post your commercial or DIY recommendations. Thanks!

So far I've had the intended effect with a:
Digitech Digidelay
Akai Headrush
Lectric-fx Memento

http://smg.photobucket.com/user/mrnico/media/Feedback20loop.gif.html

Nice job with the enclosure!

Two knob noise makers that I think are worth investigating are:
Noise Ensemble
Tim E's PWM
Crash Sync (needs a volume control, so there's your 2 knobs)

Here's to your return and a fun build!

Ran across your pics of this build on Flickr recently and was going to message you about it.
Looks great and I bet it sounds fantastic too. Your friend is a lucky guy!

Nice build!
The fact that you say you love it is making me really want to try the Triton circuit.

Hmm, maybe I will have to open up my PDS again after all.

I think FX Doctor was doing a high cut control on these, but haven't seen/heard anything else about it.

Dude...cool! I will definitely give this a try. I have two...one stock and one I modified to use an expression pedal for the delay time. I think I'll put it on the second one. Was also thinking of putting in a filter control for some tone variations. I love the old PDS1002.

Hey, thanks! Yes, the PDS series is still a lot of fun.
One word of warning: I did notice some faint high frequency whining in the background after I did the mod which seemed dependent on what power supply I was using. It could have been there before the mod as I only had the pedal a few weeks before I took it apart. This is audible when the mod is off and even when the pedal is bypassed.
Your mods sound cool too. I've considered the expression pedal mod, a slam switch and more, but at some point I have to just put down the iron and play a little haha

Hi friends,

Here's a mod that is originally from Nevin of Fruitsnake Bends:
http://reade2016.wix.com/fruitsnakebends

He gave me permission to post this along with my findings.

Here's what he had to say:
"The modification itself is actually very simple; an SPST switch is soldered between two points on one of the ICs, creating a controllable short-circuit. If you open up the 1002 and hold it with the output to your left, looking at it from the bottom, the IC that you want to address is the third from the left in the top row. Look at the leftmost row of pins on that IC, and count the pins starting from the bottom and moving to the top (the pin closest to the pedal casing should be number 8 ). Solder pin 2 and pin 7 to the switch, and you're done!"

As I experimented with this bend, I found that connecting pins 4 and 7 (going by Nevin's numbers) also created a similar but distinctly different sound.
I used a SPDT on/off/on toggle with the middle lug of the switch connected to pin 7 and one outer lug to pin 2 and the other lug to pin 4. This way you have your regular sound and two lofi bit-crushed rhythmic pitch-shifting modes.

I'm adding a video, but as you can probably tell, there are way more sounds to be found. Especially when the Repeat Hold button is on and you start turning the time knob. An easy way to lose a couple hours.

One to be proud of. I bet it makes a great noise.

Cool! I like the names of the controls

Fuzz Kaiser has an awesome collection of interesting builds:
http://fuzzkaizer.tumblr.com/

His Tongue Bender is a pretty neat creation as well.

Looks dope!
You should update your avatar with tiger print and Aqua Net
Had no idea jazz players went near a Rat. Will have to investigate.

That swirl!
Take it from someone with a lot of trial and error experience: This hobby gets more fun when you spend less time debugging and more playing.
Enjoy your builds!

Yes to everything everyone else said. I have a set I got really cheap and I got what I paid for. Really hard to keep straight, hard to feel confident about direction of letter, and most of all, even with a decent amount of force it was hard to indent the enclosure.
Have to admit that those who get it to work do make it look very cool.

I'm in Chicago. At any point let me know if you have any questions, I'm happy to help you have a fun trip.

Looks great. I dig the junction box look. Maybe you can install them around the house and be able to plug your guitar in the wall...

Ha! The house of the future - today!

As always great build. These junction box builds are very cool. Keep up the good work!

-Mike-

Thanks for the support. Didn't you get one of these PCBs too?