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 Forum index » DIY Hardware and Software » The layout factory
WASP vcf stripboard
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billsaban



Joined: Apr 09, 2018
Posts: 2
Location: Spain

PostPosted: Mon Apr 09, 2018 5:24 pm    Post subject: WASP vcf stripboard Reply with quote  Mark this post and the followings unread

Hi.
I want to add a Wasp vcf to my modular rig, but i feel lazy and i don't want to etch a PCB for it.
I've been searching for a stripboard layout and i'm surprised to not find even one.
It's odd for such a popular circuit, so i made one.
I tried to get the smallest board i could, so i added some components to the pots and jacks.
It's not verified yet, but i'm pretty sure it's okay.
I hope this can help someone.


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Project_2501



Joined: Jan 31, 2018
Posts: 68
Location: Los Angeles

PostPosted: Wed Apr 11, 2018 4:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thank you for the layout. Once I get ahold of some IC's, I'll fab this one up.

NJM13700 is a cheap replacement from mouser if you anyone needs it. Still looking for a 4069 or maybe a 40106.

Let us know when you fire this up, sound files would be amazing. I'm very new to schematics, I wish I could optimize your layout, but I'm still learning Smile
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Sven



Joined: Mar 10, 2017
Posts: 48
Location: Norway

PostPosted: Sat May 26, 2018 1:25 pm    Post subject: Re: WASP vcf stripboard Reply with quote  Mark this post and the followings unread

billsaban wrote:

It's not verified yet, but i'm pretty sure it's okay.


Hello Bill,

have you built the filter and verified the layout? Which schematic did you use?

Sven
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MapacheRaper



Joined: Feb 15, 2018
Posts: 166
Location: Spain

PostPosted: Wed Aug 08, 2018 12:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

Tempting

I guess noone has test it yet, isn't?
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JovianPyx



Joined: Nov 20, 2007
Posts: 1988
Location: West Red Spot, Jupiter
Audio files: 224

PostPosted: Thu Aug 09, 2018 10:40 am    Post subject: Reply with quote  Mark this post and the followings unread

Project_2501 wrote:
Thank you for the layout. Once I get ahold of some IC's, I'll fab this one up.

NJM13700 is a cheap replacement from mouser if you anyone needs it. Still looking for a 4069 or maybe a 40106.

Let us know when you fire this up, sound files would be amazing. I'm very new to schematics, I wish I could optimize your layout, but I'm still learning Smile


I would not use a 40106. It has schmitt trigger inputs which will interfere with the function of the amplifier that is needed by the WASP. The best choice is CD4069UB which is available at Mouser and others. The 4069 is employed not as a gate but as a linear amplifier which provides distortion. An alternative choice would be 4007.

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mercury8



Joined: Nov 25, 2018
Posts: 14
Location: grand rapids ohio

PostPosted: Thu Dec 13, 2018 4:23 pm    Post subject: wasp power Reply with quote  Mark this post and the followings unread

no one has tried this yet? I barely rank above a noob so id hate to be the first to alk into thee tortous wasp vero chamber. so it normally runs off 9v battery but can it run of +12v and ground froma basic dc walwart?? im surprised more people haven't participated in this thread. I imagine if it cant run off 12v then a regulator could be added to bring the rail down to 9 before entering the wasp circuit.
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Beaufays



Joined: Dec 14, 2018
Posts: 4
Location: Belgium

PostPosted: Fri Dec 14, 2018 6:54 am    Post subject: Reply with quote  Mark this post and the followings unread

looking at the layout, I can't seem to find the values for the upright resistors...am I missing something?
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mercury8



Joined: Nov 25, 2018
Posts: 14
Location: grand rapids ohio

PostPosted: Fri Dec 14, 2018 2:35 pm    Post subject: wasp Reply with quote  Mark this post and the followings unread

thanks for the reply man. looking at the fontrik schematic which might not even correlate to this layout, those resistors seem to be 27k and 1k, but if you look at the layout on diy stompboxes there seems to be to many descrepencies so I suppose ill forget about this one and go back to messing up some more ms-20 layouts. im about to retreat bac over to that forum I suppose.
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ceero



Joined: Jul 25, 2019
Posts: 2
Location: Norway

PostPosted: Thu Jul 25, 2019 8:40 am    Post subject: Reply with quote  Mark this post and the followings unread

I just made this, and got it working after scratching my head for a while.

There are 2 errors in the stripboard layout:

The connection from CD4069 pin 5 is supposed to go to LM13700 pin 12.

There's a 51k resistor missing between CD4069 pin 4 and LM13700 pin 13.


I've used resistors as shown in http://modular.fonik.de/pdf/Wasp%20Filter%20clone.pdf

I also put the capacitor and resistor seen in top right corner of the schematic on each of the outputs, and connected all the jacks to ground. Should be better if I'm understanding things correctly.(?)

I breadboarded it first, and then transfered the components from there to the stripboard, which really made it pretty easy to follow along and compare schematic to stripboard to breadboard as I went.

Anyways, it works. I have to find a better curve for the cutoff pot tho.
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mercury8



Joined: Nov 25, 2018
Posts: 14
Location: grand rapids ohio

PostPosted: Sun Sep 01, 2019 6:12 pm    Post subject: wasp Reply with quote  Mark this post and the followings unread

you absolutely rule cero. thanks a lot man. I definetly will build in the next month. deadend fx has all the frostwave pcbs available. funk-a-duck, resonatter etc. plus all the lovetone pcbs and other hard to find pcbs. there in pedal format but that's ok. thanks again cero. maybe ill post a video of bass and guitar into this wasp since one dosent exist yet
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AntonyMarsh



Joined: Jul 21, 2020
Posts: 1
Location: Ashburn, USA

PostPosted: Tue Jul 21, 2020 10:14 am    Post subject: Reply with quote  Mark this post and the followings unread

Hello..as per my knowledge with Wasp VCF, If the regulator is working right, there will be 5v on pin14 of the 4069. Note that both chips will work happily on 9v supply, so I'm puzzled as to why 5v regulation has been provided. That said, if you drive the 78L05 backwards, it will probably just fizzle out quietly and supply the original 9v through to the rest of the circuit. And yes, it might appear to work.
Last edited by AntonyMarsh on Wed Dec 01, 2021 1:07 pm; edited 3 times in total
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JovianPyx



Joined: Nov 20, 2007
Posts: 1988
Location: West Red Spot, Jupiter
Audio files: 224

PostPosted: Tue Jul 21, 2020 10:56 am    Post subject: Reply with quote  Mark this post and the followings unread

AntonyMarsh wrote:
Hello..as per my knowledge with Wasp VCF, If the regulator is working right, there will be 5v on pin14 of the 4069. Note that both chips will work happily on 9v supply, so I'm puzzled as to why 5v regulation has been provided. That said, if you drive the 78L05 backwards, it will probably just fizzle out quietly and supply the original 9v through to the rest of the circuit. And yes, it might appear to work.


I believe it is because of the way the designer wanted to invoke distortion. The 4069 gate gain changes depending on the input voltage. It is greatest when the input voltage is halfway between Vdd and Vss. As it nears either Vdd or Vss, the gain decreases. This causes the 4069 used as a "linear amplifier" to distort somewhat like an overdriven tube. If you move the voltage from 5 to 9 you will probably lose some if not all of the distortion effect provided by the 4069.

_________________
FPGA, dsPIC and Fatman Synth Stuff

Time flies like a banana.
Fruit flies when you're having fun.
BTW, Do these genes make my ass look fat?
corruptio optimi pessima
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