This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Thursday, April 9, 2015

Mid-Fi Deluxe Pitch Pirate

This was a request from my friend Cody from They Remained Silent blog. The Pitch Pirate is a vibrato/chorus pedal, and the deluxe version adds a PT2399 based delay. It also has the ability to modulate over an octave as well as control the waveform of the modulator, giving you a huge range of tonal options.





Notes:
You can go the home-brew route and put a 1M LDR and LED in some shrink tubing or there should be enough space to use a VTL5C2 photocoupler. Adjust the trimmer at input till there's no unwanted distortion.

44 comments:

  1. just checking: has this been verified yet?

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    1. Still tagged as Unverified, so no. Give it a shot tho

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    2. OK. After seeing the FSB thread I was hoping someone had finished it. If I do it I'll definitely let ya know.

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  2. It's verified! Thanks for great layout!

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  3. Can't really help you without more info. It's been verified, so I'm gonna go ahead and say it's user error.

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  4. Hello! Thanks for the project.
    I tried this one and it seems to have something wrong or the way the effect work is different from what I expected . On the "vibrato side", the effect is too subtle (blend on 0). When I move the blend pot clockwise, starts a beautiful delay/vibrato, but no sound from the guitar. Only the repetitions with vibrato effect.
    Is this right?
    Best regards and great work!

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  5. I think I sounded a bit confusing.

    I expect to have a vibrato pedal with blend pot at full anticlockwise. But I only have an almost clean signal in this position.

    The vibrato/pitch/chorus beauty only apears on delay.

    Is this right? Thank you!

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    1. I haven't personally built this or played with an original, so I can't speak to the issue you're having. Check video demos and see if they can clear it up. Can anyone else chime in here?

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    2. https://www.youtube.com/watch?v=z9k7LdscJfQ

      Looking this video, I think it's great. Very similar. I change the speed wiring. Before: Speed 1. After: Speed 3. Now speed increases to clockwise. Also, I changed the speed potentiometer to B500K for a better response, in my opinion.

      Again, great work! Cheers!

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  6. I'm not finding the "Request" area here. So, I ask you: it is possible to make the standard version of Pitch Pirate? Here is the vero: https://dl.dropboxusercontent.com/u/50716053/Pitch%20Pirate.png

    I think it sounds incredible, it's more simple and more direct.

    Thanks!

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  7. see on sample demo https://www.youtube.com/watch?v=sYmBkyNEYuE

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  8. thanks a lot!
    great sounding pedal and great layout as usual
    Cheers!

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  9. Does anyone have a vero of the Deluxe Pitch Pirate?

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  10. Hey guys. Anyone have an issue with LED? I went from the board to the switch but get nothing lighting up. I know the LED works I can get it to light when u touch coped traces. Just not working with the effect? Any ideas? Thanks in advance!

    Matt

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  11. Hi, you have pin "Footswitch ground" and if the pin is connect to ground then generator work and the LED blinking with speed of generator.

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  12. Great site! Love your layouts. Any chance of a vero/pcb for the Mid-fi clari not? Schematic here:

    http://www.diystompboxes.com/smfforum/index.php?topic=74294.msg603773#msg603773

    Thanks!

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    Replies
    1. I will add it to the list. Thanks for including the schem!

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  13. it works but i hear a click(its sounds like the lfo. when it gets up to audio rate its an annoying whine.) do others have this lfo noisesad? or can i fix it.Regardless this pedal rules. I can easily get tame to insane chorus sounds. Vibrato/ and a whole bunch of effects that cant really be described but are usually very pleasing. This pedal is a must for any sonic explorer. It will be a staple on my board just for the lush chorus/vibrato. the trippy crazyness is just icing on the cake!~ 10/10 this pedal is amaze balls.

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    1. I had the same anoying lfo click like you, did you fix it in your pedal? This effects rules!!! Sorry for my poor english!!

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    2. initially mine clicked especially on a tube cricket. i inserted a 200ohm resistor across 9v to pin 8 i just cut the trace on the top of board and soldered a 47uf cap across pin 8 to ground. now no clicking what so ever

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  14. i just build one and it's work !!!
    But i had a problem, there isn't delay if the delay knob setted at full

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    1. Sounds like the wiper of that pot might be going past the end of the resistant track and shorting out. Either don't completely max that pot or replace it.

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  15. Have some white noize on delay repeats. I think the reason is bad quality PT chip.. will try another

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  16. I just finished building this. Very cool effect! I tried about 15 different PT2399s until I found one the circuit liked best. I also used an LM386-3 chip. It tamed the noise a bit more to my ears. Thanks for the layout and Happy New Year!

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  17. Hi,

    I've found cheap replacement for vtl5c2 - soviet АОР124А. It is nearly as fast and excels any homebrew vactrol even with high quality ldr.
    I've also put ne5532 instead of 4558, imo, it worked better it this circuit.

    My build (still with 4558): https://goo.gl/Jfe7Nj

    Cheers!

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    1. Hello, you know the Soviet analog vtl5c1?

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  18. just saw a schematic of the Pirate, and it shows a regular 25k pot as the blend control. anyways to convert this layout to that version?

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    1. I'd have to look at the schem. Can you post a link?

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  19. http://s10.photobucket.com/user/midfielectronics/media/Pirate.jpg.html

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    1. The original Pirate seems to be a bit simpler than the Deluxe. You could probably make it on this board, but it's probably easier for me to create a new layout then try and go through all the modifications that would need to be done to this layout. So look for that layout soon.

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  20. built one, effect doesnt work, only blend works (as volume). Does anyone have same problem?

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    1. check for solder bridges, they can be sneaky. If you're getting nothing from the delay, i'd suspect something grounding the 5v power to your pt2399.

      Also, sometimes the etching does quite finish, and you have to do some extra scraping between the lines. they can be hard to see.

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    2. Same thing happened to me. Haven't found the solution yet tho

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  21. Hi can someone explain me were do i connect footswitch ground, and "led" ? Thank you!!

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  22. This comment has been removed by the author.

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    1. The VTL5C2 is just a LDR and LED in one package. They're built to specific specs so you don't have to play a guessing game with individual LDRs and LEDs. On one side should have an LED schematic symbol and other should have a resistor or LDR symbol.

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    2. Sadly the only vtl5c2 I could find cost $20... Definitely going the DIY way. Why connect a separate LED in the circuit? And do we need to connect the negative leg back to footswitch ground?

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    3. The LED pad is for the on/off indicator. Check the General Layout Notes for off board wiring.

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  23. Hi! Built one, but have some problem. When "delay time" pot in max and "depth" min or "delay time" min and "depth" max it works nice. But i hear many crackles of repeats in middle positions of these pots

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  24. Can someone explain the footswitch ground pad to me? The footswitch ground is the same ground on the circuit board? Also the LED doesn't blink at all it just stays constant, so the vibrato effect doesn't really exist.

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  25. Can we use the 1 and 8 pins of the lm386 as a start point for a fuzz mod ?

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