Testing an mn3005

[Locrian99]

I’m assuming the easiest way to test an mn3005 without having a pedal built that uses it is to build the circuit from the datasheet? Does anyone know of a simpler one?

I got a bunch of old boards etc and there’s some boards with 3005’s (along with several other bbd’s that I have pedals to swap). Im to remove them with a hot air station but would like to test after.

 

[Cybercow]

I use this test circuit PCB with great success.
I augmented the build doc a bit for other BBDs as well.



And here's a shot of the BBD tester with an MN3011 breadboard jig I configured and Frankensteined in . . . .

 

[Locrian99]

Man that looks perfect. Of course they do not have stock. May have to email and see if it’s something they will stock again.

 

[Cybercow]

Man that looks perfect. Of course they do not have stock. May have to email and see if it’s something they will stock again.

He (the fellow at DSMCZ) may be able to put you in direct contact with Dimitris Diamantidis (the creator of that PCB).

 

[Locrian99]

He (the fellow at DSMCZ) may be able to put you in direct contact with Dimitris Diamantidis (the creator of that PCB).

Might have to do some scouring and see if I can find the schematic it looks pretty simple I’d devote a breadboard to it.

 

[Cybercow]

Might have to do some scouring and see if I can find the schematic it looks pretty simple I’d devote a breadboard to it.

At one point I was in touch with Dimitris directly, but he was reluctant to share the schematic. Worse-case scenario is that I trace the board I have and share a schematic. Perhaps then an enterprising PCB layout guru could assemble a set of Gerbers.

 

[fernando jfet]

At one point I was in touch with Dimitris directly, but he was reluctant to share the schematic. Worse-case scenario is that I trace the board I have and share a schematic. Perhaps then an enterprising PCB layout guru could assemble a set of Gerbers.

If you could trace the board I can create a schematic and pcb file in KiCAD

 

[Cybercow]

If you could trace the board I can create a schematic and pcb file in KiCAD

I believe I have the schematic done. Tracing it from the populated board I have just seems a bit janky.



I believe there will be an unpopulated board in the mail tomorrow from a friend. (I'm just borrowing it to confirm the trace I did without any components on it.)

If you could generate a set of submittable Gerber files for it, that would be cool.

If you could add the MN3011 bits and footprint to the PCB too, that would be the schiznit!

 

[Giorfida]

I believe I have the schematic done. Tracing it from the populated board I have just seems a bit janky.

View attachment 69407

I believe there will be an unpopulated board in the mail tomorrow from a friend. (I'm just borrowing it to confirm the trace I did without any components on it.)

If you could generate a set of submittable Gerber files for it, that would be cool.

If you could add the MN3011 bits and footprint to the PCB too, that would be the schiznit!

Which is the BBD that’s made of “unobtanium” that makes true Scholz time delay fx cloning impossible now?

 

[jwin615]

Which is the BBD that’s made of “unobtanium” that makes true Scholz time delay fx cloning impossible now?

Reticon sad1024?
Or the tda sumthin sumthin?

 

[Cybercow]

Reticon sad1024?
Or the tda sumthin sumthin?

Which is the BBD that’s made of “unobtanium” that makes true Scholz time delay fx cloning impossible now?

It's the MN3011. (Not the SADxxxx line.) There are one a scant few of the MN3011s left from a seller on eBay. He wants $70 a pop with $30 shipping for them with no discounts. There's also a fellow on Reverb what who'll take $69 each with free shipping. Either have priced them out of economical range for our X100 builds. A lot cheaper to use the FV-1 and our custom patches.

 

[Giorfida]

Reticon sad1024?
Or the tda sumthin sumthin?

The Reticon is one id also like to see reproduced as there are a lot of cool fx that used it!

It's the MN3011. (Not the SADxxxx line.) There are one a scant few of the MN3011s left from a seller on eBay. He wants $70 a pop with $30 shipping for them with no discounts. There's also a fellow on Reverb what who'll take $69 each with free shipping. Either have priced them out of economical range for our X100 builds. A lot cheaper to use the FV-1 and our custom patches.

Thank you. I knew ie was one of the MN3000 series just not sure which one.
I’m sure the analog path is also more critical than the delayed signal, so I’d expect the FV1 to keep a LOT of folks happy!

 

[Cybercow]

Thank you. I knew ie was one of the MN3000 series just not sure which one.
I’m sure the analog path is also more critical than the delayed signal, so I’d expect the FV1 to keep a LOT of folks happy!

Right. We are not changing a single thing about the preamp section. Only the FX circuits are going to be altered. And so far, the FV-1 patches we have are spot-on.