Sunday, 29 May 2016

Way Huge Green Rhino MK II

Here is a layout for the Way Huge Green Rhino MKII overdrive.
I would like to thank Ciaran Haslett for drawing a schematic by reverse engineering his own pedal.



45 comments:

  1. Thank you Ciaran and Alex for all your work on this.How can we get a copy of the schematic?

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  2. It's in the Forum/Open Chat.

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  3. The one place i didn't look,my bad duhh sorry about that.

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  4. Why there are four transistor stacked in that way?

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  5. alguem pode me passa o layout desse pedal??? hebertfreitas123@gmail.com

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  6. Built it, but only buzzing comes out of it, and the lf347 gets really hot quickly. Did someone had luck building this?

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  7. Hi Alex, could you tell me what the green dots on two of the connectors mean? I guess it means that at the green dot there is also a connection to the vero at this spot, but just wanted to check. First time i've seen this. Cheers

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    1. Oh, i mean on the vero layout.

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    2. The green dot is 2 links connecting together.
      You just solder them together at that point.

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    3. Great, thanks Alex. Hope to have this done later in the week. I wanted to say "up and running this week" but dont want to get to far ahead of myself.

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  8. Verified! Another great OD. Thanks Alex and Ciaran.

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  9. Just finished mine! I'm not very fond of the TS family, but boy, this one sounds great!

    https://scontent.fudi1-1.fna.fbcdn.net/v/t1.0-9/13600316_1120186364691895_6809369163886286529_n.jpg?oh=8360cba100b1bb34d7fdc759f07da3fd&oe=582FBB38

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    1. Cool enclosure! Is that a Hammond 1411, or different one?

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    2. Thanks Balázs! I got them custom made here in Brazil!

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  10. Finished it, waaay better sounding than the ts808 for example. With a strat and the 100hz knob on max, it sounds amazing!

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    1. Hi,
      what was the problem with the IC getting hot?

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    2. Oh there was a really thin bridge of solder between two rows, which I could only see with a magnifying glass :/ Check that first after you're done with the build, usually those are the most common problems for symptoms like this :)

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  11. Resistor value error folks. Change the pulldown 10K on OUT (between the 1u and 10u caps) to 1 Meg. Sorry about that.

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    1. Thanks Ciaran.
      It's been corrected.

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  12. Hi should there be any sound coming of the emmiter side of the 4 transistors (in a row).

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    1. Yes there should. Those act as an input buffer, so input signal at all bases, supply voltage at all collectors and low impedance output at all emitters.
      +m

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  13. Hi,

    On the emmiter side of the 4 transistors not getting any audio signal and the voltage is 4.5v on the emmiter side is this to high?

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  14. On mine the drive and the volume pots don't seems to work. Can someone help me? Excuse my english i'm french

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    1. Check continuity between the ic pin 2 and drive pot 2&3.

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  15. Does anyone have the the vref voltages I'm getting 5v on most of the ic pins but a huge amount of distortion at the output sounds great though.

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  16. Can anyone share the schematics? Can't find any in the usual places (or I lack google skills). Thank you!!

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    1. They are in the Forum, make sure you pick the right one as there is two of them when you do a search.

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  17. Has anyone analysed the circuit? Definitely want to make one, but I'm not familiar with this many op-amps in one circuit :) I've done some work and made a schematic following the OP diagram: http://imgur.com/zVplT3O

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    1. Ok, just found the forum (doh). Should there be any notable difference in using LF347 instead of LF353N ?

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  18. Sorry if this is a dumb question. but in other vero layouts it specifys what goes to switchs ect. or should i find a schematic?

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    1. I don't understand your question. It's all in there.

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  19. like vol 1,2,3. usually its one vol, shows where the return is for gain pots ect. the tone 1,2,3 is it a toggle between the 3? i guess a hand as to where the leads go.......

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    1. Click the offboard wiring tab at the top of the page

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  20. Hi,
    I am trying to build this pedal in a breadboard by interpreting the schematic. I am learning and don't have a lot of knowledge......
    Can someone specify wich pins for the LM833 and LF347 are in the schematic ( there it is only marked as - , + and nothing in the output).
    Thank you!

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    1. Hey man, the pins are placed as seen in the picture. All of them are used. You can easily find the data sheets doing a quick search: http://www.ti.com/lit/ds/symlink/lm833-n.pdf . There you can trace the different pins.
      Sorry if I misunderstood you.

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    2. Thanks Kafzilla.
      I am not following the layout , I am following the schematic to implement the circuit in a breadboard ( to learn ) and I cant "trace" which pin is which with the help of the layout ( I get lost in the laberynth of connections). In the schematic it is only marked as : + , - or nothing in each point of the triangle that is supposed to be the ICs ( or whatever is the LM833 and LF347).
      The schematic I am following is :
      http://www.freestompboxes.org/viewtopic.php?f=7&t=23141&p=263514&#p263514

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    3. Right, the triangle represents an OP-amp. If you look at page 2 in my link (the LM833-n datasheet) there is a picture showing the internal layout of the IC. The +VCC/-VEE is for the supply voltage for the IC which is not marked on the pedal layout. The +IN/-IN is the +/- on the triangle in the layout. E.g. the LM833 has two OP-amps inside it (A and B). The half-circle on the IC indicates the orientation.

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    4. Thank you very much!
      Just to be sure......even if it is not written in the layout, I have to connect +VCC(in the OP-amp) to VCC and -VEE(in the OP-amp) to ground in the circuit, right?
      I will try it again!
      ( why do they not write that in the circuit to begin with?, ink is ship!)

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    5. Yes, it's implied that the OP-amp doesn't work for free. It's sort of like stating that you need to put gas on your car :)

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    6. I was puzzled about that.....In this schematic there are components connected straight to 9v and other to Vref. Where should I connect VCC in each op-amp, 9v or Vref?
      ( I have tried both but no success so far building it in the breadboard, might I have damaged the Op-Amps by connecting them in a wrong way previously? , how do you check if an Op-amp is fine working?
      Thank you Kafzilla!

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    7. I would guess that Vcc~9V. Vref is maybe somewhere halfway between 0-9V. Haven't built the pedal myself yet. I'd google it or watch some youtube videos :) Might also be loose connections in the breadboard.

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  21. Ive been on an overdrive making binge lately. This is such a cool ts variant. The 100hz knob is an awesome feature. Its great for fattening single coils and also handy for losing flabbyness when playing a seven string.

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