The Ludwig Phase II boards are in!!

[digi2t]

The Ludwig Phase II boards are now in.

These are version 2 boards, incorporating several improvement over the first version. These improvements are;

- incorporation of a DIL diode bridge package (example; Vishay DF04M). This allows for easy powering via DC or AC power schemes.
- added pads allowing the mounting of the power transistor on either side of the board. This includes pin identification.
- R26 may now be configured as a resistor, trimmer, or combination of both. This allows adjustment for improved filter response.
- Fast/Slow switch and LED orientation now reflects the original units.

Pictures;





There are 50 board sets available for sale, on a first come, first serve basis. Build document is available at Geofex. Tech support, as always, available here.

Please see the "For Sale/Trade" section, or this link http://www.diystompboxes.com/smfforum/index.php?topic=99325.0 , for ordering details.

Thank you.
Dino

[pinkjimiphoton]

count me in bro!!!!!!!!!

[newperson]

Is this board any different in function as the layout RG put out within the doc notes?  I see that this is double sided where his pnp is not.  Or is the difference the 4 notes you have listed at the top?

They look super nice!

Thanks,

[digi2t]

Is this board any different in function as the layout RG put out within the doc notes?  I see that this is double sided where his pnp is not.  Or is the difference the 4 notes you have listed at the top?

They look super nice!

Thanks,

All functions remain the same, what I listed are just additions to either clarify, simplify, and/or improve the build and performance of the effect.

Insofar as the diode bridge, and R26 trimmer additions is concerned, they are not covered (at this moment) in the Geofex build document, but I imagine that R.G. will be updating it soon. In the meantime, any questions regarding these mods can be addressed via forum post.

Cheers,
Dino

[R.G.]

Modified docos are up at Geofex.

I notice that the PCBs do not include the little holes for breaking the boards apart at the routed serrations between them.  As I remember, there was some issue with the routing and breakapart sections, and I guess the PCB house deleted the holes.

This just means that you'll have to cut the PCBs apart along the row of slots between them instead of having them break neatly. No biggie. Use a hacksaw right down the middle of those slots.

[pinkjimiphoton]

so...RG... i gotta ask...

are you gonna take the cct and expand/modernize it as we had discussed during the discovery period a ways back?
would love to see a modern take on this, that would be easier and use less components.

i know it's a big bite to ask about, but i am fairly curious to see what YOU would do from a re-engineering standpoint.
i have a feeling it could be improved upon substantially with a more modern approach.

[digi2t]

Modified docos are up at Geofex.

I notice that the PCBs do not include the little holes for breaking the boards apart at the routed serrations between them.  As I remember, there was some issue with the routing and breakapart sections, and I guess the PCB house deleted the holes.

This just means that you'll have to cut the PCBs apart along the row of slots between them instead of having them break neatly. No biggie. Use a hacksaw right down the middle of those slots.

No worries R.G.. My Dremel will make quick work of it. Besides, I`ll be seperating them to keep the shipping cost down.

I had counted on that from the get go.

I still can`t get over the diode bridge idea. Just brillant. Then again, doesn`t take much to impress me. Cardboard box, ball of yarn, etc.  I`m a cheap buy at Christmas.

[R.G.]

so...RG... i gotta ask...

are you gonna take the cct and expand/modernize it as we had discussed during the discovery period a ways back?
would love to see a modern take on this, that would be easier and use less components.

i know it's a big bite to ask about, but i am fairly curious to see what YOU would do from a re-engineering standpoint.
i have a feeling it could be improved upon substantially with a more modern approach.

I'd love to - which is my way of saying that my usable design time is tied up for several months at least. 

I have filters that do the necessary job, but hooking them up with suitable other stuff takes more bench time that I'll have for a while. It'll happen some day, but not soon.

[newperson]

what is the "cct?"

[R.G.]

I took it to mean "circuit", meaning the whole detailed technical design. I think Jimi meant "re-implement it by redesigning to the same function with newer/different/modern devices to be cleaner and simpler".

[digi2t]

what is the "cct?"

Closed Circuit Television. It`s an intregral part of the Ludwigs vocalization circuitry. It «sees» what you play, and vocalizes accordingly. It was way ahead of it`s time, and was one of the reasons why the circuit is soooo complex. Nobody really figured it out, not even the brains at Source Audio. The best they could was the Hot Hand. Phhhtt... woosies!

[Keeb]

Found my boards in the mail today!
Excellent quality.

Thank all of you for doing this. Now I just need to hunt down a few transistors and those switches from mouser...

[~arph]

Arrived in the Netherlands today. thanks!  One quick Q. Why are the top right two pots offset to the others?

[digi2t]

Arrived in the Netherlands today. thanks!  One quick Q. Why are the top right two pots offset to the others?

I can't see it being for lack of trace space, but on the original units these two controls were on the fall board. It does lend a bit of authenticity having then offset a bit. That way it puts the focus more on the other four controls, which are more used.

That's my educated guess for the day.

[~arph]

Yes, that makes sense. Thnx

[R.G.]

The educated guess is right. Keppy did a great job of putting all the controls on one panel and preserving some sense of what was logically different from what. The pot locations are from that effort.

[Govmnt_Lacky]

Dang!!!

Still waiting for my boards 

Stupid holidays 

[syntaxera]

wow... that is one very serious board you got there.  nice!