Here is a contribution from Jordan Fontaine, a modified Mid-Fi Clarinot)
Modded Midfi Clari(not)
This was a fun project to delve into. I certainly didn’t stay true to the short delay, tape warble aesthetic. The delay still does that sound but now it can run wild too. Very versatile now for rockabilly, dub, shoegaze etc.
Delay time is extended and feedback added to extend beyond a single repeat.
The trimmer sets the threshold for runaway repeats to taste.
I borrowed the blend for Midfi’s Pitch Pirate so there are more sounds available here.
If you have runaway repeats happening and dial the blend close to dry it almost sounds like a scratchy record under your playing.
The fuzz control from the original has been removed to add to the ‘clean’ sound of the pedal. Although the longer repeats will add noise and clip as well.
Where the crazy comes in is the external mounted LDR. The second footswitch engages the LDR and affects the Delay control as you interfere with the light in front of it. The Offset control allows for the light to make dramatic or subtle changes to the time. This is easily omitted if you're not interested in it.
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Is it possible to see the diagram?
ReplyDeletehttps://montonousdelay.tiiny.site/
DeleteThanks!
DeleteI'm building this but confused about the external LDR. It seems that's a roll-your-own LDR+LED that's triggered by a DPDT footswitch... is that right? If so, why's it external to the main stripboard? What does "as you interfere with the light " mean? Thanks!
ReplyDeleteThe external LDR is on the face of the enclosure. No Led is needed for that one. I used a little silicone to put it in a bezel and shrink wrap on the legs so they don't short. When its 'on' you can wave your foot over it to cause changes to the time pot. The Offset pot makes the ldr make abrupt changes or more subtle ones.
ReplyDeleteThank You! Where does row G "LDR LED" and row H "LED" go? FX bypass led? Signal flow thru these resistors doesn't inform. :)
DeleteAre there corresponding points on the schematic?
What's the schematic representing with the switch in the power section resistor switching? I'm guessing R101 is the bypass LED and it's "on/off" switch is the effect bypass stomp... but that's not noted elsewhere. What's R102's function?
n.b. Technically speaking the 2 resistors in the power section are getting VCC, not +9v. GL5549 spec says green is peak, not red... but I'm just sayin' b/c this is rock n' roll (or rockabilly, dub, shoegaze, etc.).
The led resistors go to positive of indicator leds. Good catch, I missed putting them in the schematic. The resistors would be r101 and r102. Ldr led (r102) is the indicator led.
DeleteRed is because I liked the feel of it better over green.
Thanks again for your help, Jordan. I tested mine tonight & this is wild. My external ldr, switch, and all pots seem to work fine. I love that you've expanded an already interesting/inspiring circuit!
DeleteSo, if one chose to not use an indicator/status LED for the external LDR... the footswitch could be single-pole, correct?
Correct. It could be a toggle switch if you prefer. I'm thinking of replacing my latching ldr footswitch with a momentary switch. Just more options for you.
DeleteGlad.you like it. Very fun delay.
Kool, kinda like an optical theremin
ReplyDeleteTrue. Especially once it begins to oscillate the LDR gives a lot of opportunity to manipulate.
DeleteI’m super interested in this as well. It’s just written out confusing to me. So on row p there are wires for delay 2 and 3 as well as depth 3 I get but is there also a third wire for the ldr that’s external??? The > symbol confused me. Sorry if this is dumb
DeleteHere's how my ldr worked out on the front. I used my existing pedalpcb board and then the needed daughter boards, wiring etc.
DeleteBy the time I finished I should have just gone with stripboard.
https://www.reddit.com/r/diypedals/s/ZW9zaXjZEX
Woops, > should be /. One leg of ldr ties with Delay 2 and 3 and Depth 3. The second ldr leg ties to Offset 1. This is a tricky one to wire.
ReplyDeleteThis comment has been removed by the author.
DeleteSo there should be a 2 wires from the board. One to depth 3 and a double to delay 2 and 3. Then a wire should run from both of those two spots to the leg of the ldr???
DeleteI would run a wire from the board to delay 3, jumper between delay 2 and 3, wire from delay 2 to depth 3, then a second wire from depth 3 to ldr. Does that make sense? I can draw it if it helps.
ReplyDeleteIl give that a try and see what’s up. I really appreciate it. I def wanna get this working as I never see this feature on pedals.
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ReplyDeleteWhere does let led go?? Which led. This is the most confusing layout the way it’s written
ReplyDeleteSorry ldr led
ReplyDeleteLDR LED goes to + of the indicator light.
ReplyDeleteAhhh I see so the external ldr has a led for indicating it’s on. Got confused
DeleteHopefully the corrections will help
ReplyDeletehttps://ibb.co/mFc2MKHY
@j Fontaine dude. You’re the best. Couldn’t have done this without your help. The layout was just worded differently than I’m used to seeing but I got everything working well now. All the knobs work. Tiny bit of hoss but it’s not boxed yet. My last question is where does the neg leg of the external indicator led go??
DeleteMy pleasure. There will be some hiss at longer delay times. The pt2399 is not ment for they ways it's sets. But I long crappy repeats .
DeleteThe negative leg of the led wires to the footswitch with a ground leg, just like on the regular on/off footswitch.
I used a dpdt footswitch for the external and can’t fig where to put this msg without it cutting the delay. Weird. What number on the switch would u try??
DeleteOffset 1 would go to the center pin and the second leg of the LDR goes to the pin above it. I don't know why it would cut out delay, just make the time setting jump.
DeleteThen on the next row on the dpdt would be ground on center lug and indicator LED - above it.
Everything is perfect now. I had something weird somewhere but fixed it in the wiring. Thanks a lot for the help. This thing is super fun. I’m engraving an enclosure now to put it in. Amazingly fun circuit !!!
Delete👍 put some pics up when its all done.
DeleteFor sure. Thanks again!!
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ReplyDeleteWhat’s the best way to post pics to here??
DeletePost the link to it, do you have any of your pics in a file sharing site like Dropbox?
DeleteI would just post them on reddit and link it here. That's the lofi way :)
ReplyDelete