I added the mid control to my Thermionic Distortion to make it a Little Debbie

[caspercody]

I added the mid control to my Thermionic Distortion to make it a Little Debbie by making a vero board. It works.

If anyone is interested here is the vero board. Just remove C18 and R21, and add this into your pedal.

 

[MrClark6]

Ooh that's pretty handy. Being familiar with this pedal that I'm building for the first time, can I use a DPDT for the footswitch, or does it need to be 3PDT?

 

[caspercody]

3PDT

 

[Freshmex18]

I am confused. How would I add this daughterboard to a vero layout of the BE-OD? I am using this one

Friedman BE-OD

Collection of vero (stripboard) & tagboard layouts for 100s of popular guitar effects, with over 1000 verified designs. DIY your own boutique effects!

tagboardeffects.blogspot.com

Really, it's everything on the left side: the volume pot and the In and Out (since out is lug 2 of the volume pot on the main board vero)

 

[Feral Feline]

This old thread should be moved to MODIFICATIONS, as this isn't a build-report (but a really cool mod).
Maybe one of the mods can move it to MODIFICATIONS.

I am confused. How would I add this daughterboard to a vero layout of the BE-OD? I am using this one

Friedman BE-OD

Collection of vero (stripboard) & tagboard layouts for 100s of popular guitar effects, with over 1000 verified designs. DIY your own boutique effects!

tagboardeffects.blogspot.com

Really, it's everything on the left side: the volume pot and the In and Out (since out is lug 2 of the volume pot on the main board vero)

The OP is referring to having the daughterboard-vero replace the PedalPCB-PCB's C18 and R21;
take a gander at the Thermionic Distortion's Build Doc.

If you're building your pedal with vero, it'd be best to re-jig your vero to accommodate the mod and have it all on one board instead of two separate vero-boards.

Compare the Thermionic's schematic to the Little Debbie's schematic in the LD's respective build doc.


If you want to stick to the Tagboard layout as is and implement caspercody's daughterboard, omit the 10k marked in PINK and remove the cap in pink as well and feed your daughterboard from the removed cap's pad circled in green. (Of course, Tagboard's "Level" will now be off the daughterboard, labelled as "VOL"):

 

[Freshmex18]

This old thread should be moved to MODIFICATIONS, as this isn't a build-report (but a really cool mod).
Maybe one of the mods can move it to MODIFICATIONS.



The OP is referring to having the daughterboard-vero replace the PedalPCB-PCB's C18 and R21;
take a gander at the Thermionic Distortion's Build Doc.

If you're building your pedal with vero, it'd be best to re-jig your vero to accommodate the mod and have it all on one board instead of two separate vero-boards.

Compare the Thermionic's schematic to the Little Debbie's schematic in the LD's respective build doc.


If you want to stick to the Tagboard layout as is and implement caspercody's daughterboard, omit the 10k marked in PINK and remove the cap in pink as well and feed your daughterboard from the removed cap's pad circled in green. (Of course, Tagboard's "Level" will now be off the daughterboard, labelled as "VOL"):

View attachment 88342

OH, that makes more sense. So the green pad from the removed 220n is now a wire connected to the the IN of the daughterboard and the OUT of the daughterboard is the new OUT for the entire circuit , yes?

 

[Feral Feline]

Yes, correct.



If you wanted to not have a wire coming from the middle of the main board, you could replace the cap and the resistor with jumpers and take the wire off the main-board's "Level 3"

 

[Freshmex18]

That sounds fancy. Extra jumpers and all.

Im already planning on making the 100k trimmer an external pot so I don't mind wires coming off random places on the board

Thank you for your help. It is much appreciated

 

[Freshmex18]

I finally got around to building my BE-OD and this daughterboard. I had to use a shielded wire for the connection between the main board and the daughterboard due to insanely loud squealing. That solved the problem right off.

The mid control works great but the volume pot does nothing. Pedal is a set volume no matter what I do. I even built a second daughterboard and same problem. Any idea what the problem might be?

I know it looks like the 2k2 and the 100k are touching in the pic but they aren't.

 

[BuddytheReow]

Run your iron through the tracks to clear out those potential solder bridges.

 

[Freshmex18]

Run your iron through the tracks to clear out those potential solder bridges.

I've done that a bunch of times already. And knifed it over and over again. It's just the reflection of the flux showing up in the photo as solder bridges

 

[BuddytheReow]

You also don’t have the bottom row powered via VDD as per the Little Debbie schematic. That will bias the opamp properly and the volume control working

 

[Freshmex18]

You also don’t have the bottom row powered via VDD as per the Little Debbie schematic. That will bias the opamp properly and the volume control working

Ah! I didn't put it together that "VDD, Volume 1" meant two separate connections (I'm still learning how to read schematics). VDD is connected to the bottom row now and the volume control works properly. Thank you for your help