Wednesday, 6 February 2013

Danelectro French Fries

Quite a nice sounding and simple AutoWah.  Thanks to Bernardduur on FSB for the scheme.

Short but sweet:

It's a '70s style auto wah like you haven't heard since you tossed your bell bottoms. 






36 comments:

  1. Looking at some of the values it looks kinda like the Dr Q

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    1. Yes it does doesn't it. I don't know if it's identical but it looks very close with a quick scan.

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    1. Fixed. Had the 390k resistor a row up accidentally. Sounds pretty good, one trick pony for sure. VERIFIED. Thanks IvIark!

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    2. I was just going to say I've been over it again and can't see anything wrong! :o) Awesome thanks for verifying mate

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  3. No problem. Now that its boxed up and in my rig the output is just below unity, is there a resistor I can play with that effects output volume? Then this thing would be perfect. Take your time, thanks IvIark.

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  4. Very nice sounding Wah!! I would like to add a volume knob, hmm............

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    1. Add a 100K log pot, take the output wire on the board to Volume 3, Volume 2 is the new output, and Volume 1 to ground.

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    2. Thanks, the reason I am going for a volume pot is because when the switch is in the up position, the volume seems to drop, I almost thought I messed up somewhere, but the down posiiton sounds so friggin good!!!! IDK the video does not show when the switch is flipped up, to me its like all the bass is sucked out idk.......

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  5. Did I mention the down position sounds INCREDIBLE!!!!

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  6. Update, I boxed this up, there is a huge pop in the one main setting that works perfectly, the pop is only when engaging the effect, VERYY loud. And the other range settings volume drop is not as dramatic as I initially thought on my breakout box, but is still there................

    thoughts? SmoothAction is your volume drop with both settings? Do you get a huge pop when engaging?

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    1. Try placing a pulldown resistor (1M or 1M8 is good value) between the board input and ground. That usually eliminates the popping you can get from switching.
      +m

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  7. I am not able to message the other guy who built one, SmoothAction, but maybe one of you guys can. I am wondering if his has both same problems.

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  8. Hey guys. Two things I've noticed in messing with this.
    1. A buffer infront of this pedal dramatically improves both options, and seems to help with the volume drop.
    2. 1M resistor from input to ground did not kill the 'engage' pop. It's more of a thick thud. I can live with it, but still looking for a fix.

    I think it's a good auto wah for its simplicity. Autowah -> Distortion is shredtastc. Add a choppy trem + delay... Soundscape bliss. It gets used regularly, I really like it aside from it sounding like a bass drum when engaging.

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    1. Did you change the 4K7's to 47K's as per the update a couple of days ago? The layout above is now correct

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  9. I used a 20K trim and a 20K pot. Could that be the reason I am not getting any wah? It was late and I was tired when I did it last night, so there is probably a problem somewhere. I will go through the board tonight.

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    1. Still can't get any wah at all. It sounds flat. It's like a wah at the bottom of the sweep, but without any dynamics. The trimmer and reso controls have no effect whatsover. I checked it over twice and everything that should be there is there. I changed all the 4.7's to 47's and I saw a mistake I made with putting an 100n where the 1u cap should be. I swapped the 20K trimmer for a 50K with no effect at all.

      ??

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    2. Put it to one side mate, I noticed that Bernard who did the schematic has posted another correction which looks a bit more involved so when I get a free 20 minutes I just need to compare and see what I have to change. I'll let you know when I've had a good look.

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  10. True, but this layout still produces a very great sounding wah, so I would double check your cuts, make sure they are in the right spot and are full

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  11. Thanks. I put it aside and built a lovepedal eternity instead so that I could go to bed with a win. Psychologically, it's important! I will check my cuts again, just for s&g's and wait to see what changes are made are made to it. Take your time, there are a thousand other projects on this site I could work on! Thanks

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  12. guys, i use one of these live for years, it's one of my "secret weapons"... it will track a lot better if you turn down the sensitiivity a bit and play with your volume and tone knobs on the guitar a little... with a little practice, you can dial in a real nice sweet spot.
    psyched you guys did this.
    thanks IvIark and +miro

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  13. So is this still on HOLD?
    It also tagged as Verified, and several people are reporting successful builds in the comments above.
    Has someone forgotten to verify the schematic changes, or forgotten to remove either the HOLD of Verified tag? The information about this one is pulling in opposite directions and it is impossible to understand if this layout should work or not...

    I built this a while ago and did not notice the "Hold" (or to be honest: I did not understand that it was not a part of the Effect name), I only noticed that it was tagged as verified, and went ahead and built it.
    Well... It did not work even though I can not find any problems with my circuit.
    How about you guys who are stating that you got it to work? Did you use the layout above? Or did you find an alternative layout? Is it verified or is it still on hold?

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    1. Can't say anything about the layout, but... The schematic is 1:1 (except for one resistor value) with this:
      http://tagboardeffects.blogspot.fi/2013/01/ehx-doctor-q.html
      +m

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  14. Wow, that was a fast response. Thanks!
    I will check and cross check with the Doctor Q and see if I figure it out.
    Or maybe I should just build the Doctor Q instead...

    Thanks for the reply and I hope you do not feel bombarded by my comments/problems on various circuits today. But my Ipad has a problem with posting comments, so there is a lot of posts from me today, as I finally dug out my laptop that actually works as it should do, as opposed to the highly overrated Ipads from (cr)Apple!
    - Neil

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    1. http://mirosol.kapsi.fi/2013/08/danelectro-dj-24-french-fries-autowah/
      +m

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  15. I would like to build this besides the OEMs ugly box I think this is a good sounding pedal.Is it OK to build or not????!!!

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  16. Hi Mark,
    I've finished built this few month ago, and its sound good, although there is a volume drop on one of the switch position. But, my question is whenever I change order of this pedal in my pedalboard, there is no wah sound come up,and I have to adjust the trimmer to generate wah sound again. I just don't want to open the box over and over again just to adjust trimmer. Is there any solution for this? thx

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    1. Unfortunately things like this can behave differently depending on the impedance of the signal going into them, so there's not much you can do other than tweak it, and so maybe having the control external would be more useful to you.

      The only other thing I could suggest is putting a buffer in the same box and have it before the main board input. Once the control has been tweaked to work with the buffer in place you shouldn't need to change it when you change pedal order.

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  17. Thx for your replay, I end up drill the box and expose the trimmer. This is the simplest thing I can do.

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  18. Krisna I have a nano q and the same thing applies a useless effect if I put it after distortion/fuzz but a hany usable effect before the dirt boxes and that is with a jfet buffer at the start of the signal chain.

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  19. Pedal sounds great but I have a little question? Is it normal to have a 4,5V on input?

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    1. There is a 100K pulldown resistor on the input going to the reference voltage (vref) instead of ground which is more commonly seen. That reference voltage is 4.5V and so your voltage reading isn't surprising.

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    2. Thank you Ivlark! Pedal sounds great! I put together with distortion in the same box and that sounds remarkably! All the best! Predrag Serbia!

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  20. This is the best autowah sound i have found yet. Built this along with the QZ1 and this sounds way better but i think i still havn't adjusted the trimmer properly in the QZ1, so i will mess with it abit more. This one is really easy to dial in via the trimer unlike the QZ1. I will explain in my QZ1 response, Anyway if you want an easy autowah build this its really really good. Thanks to all.

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  21. its subtle, very subtle and well below unity gain clean or dirty channel. the add one 100k pot didnt do anything for me.

    I am going to try another one ..this uses common parts so i was really hoping to for it to work lol ..seemed to good to be true, probably is lol

    going to take a shot at freppo's penfold AW next see how it turns out. he has all his schematics open to the public and for usage.

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  22. Thanks for this layout - fun to build and to play with!
    One switch position works great (once I got the trimmer right), the other does merely respond to the input. Could the quite low output of my pickups (Strat SCs) be the reason? With a buffered pedal in front it seems to be more responsive... Maybe I can tweak it a bit.

    Reg. Rascal's last post: If I get it correctly (I'm still new to this...) the 100k pot-mod cannot increase volume, it can only help to decrease it if there's to much output (therefore I instantly removed it again...)

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