What's in the mailbox? 📬 📦

View attachment 33075

The Schalltechnik_04 was finally ordered after a few years hankering, and Monday finally arrived: a Deelüxe GK and a HPF/LPF Fong Vilterung.
No schematics — so the tracing has already begun, making my own damn schematic on DIYLC (should probably practice on my Eagle).
Thay Schalltechnik stuff is super cool! I was disappointed to see they are shutting down :(

I think the GK Deluxe schematic is available here, but I haven't seen one for the Vong Filterung. I've always wanted to make a VF, will you post a schematic if you make one? I can even draw it up in Eagle if you get it traced out on paper.

EDIT: Whooops, cwsquared beat me to it!
 
MN3007s,3008s,3009s,MN3101s PF5102s,OPA2134s,LTC1044 (trying these out), and a big honking PT2395...:dmm::dmm::dmm::dmm:

HiX88q4.jpg
Damn fig, that haul will make for some interesting builds! In my experience, the LTC1044 is easier to work with compared to the 7660. Although if I remember correctly, the datasheet circuit for voltage doubling is a bit different (I think it requires fewer diodes?).

I'll understand if you want to keep it classified, but where were you able to find those MN300x & PF5102s?
 
View attachment 33075

The Schalltechnik_04 was finally ordered after a few years hankering, and Monday finally arrived: a Deelüxe GK and a HPF/LPF Fong Vilterung.
No schematics — so the tracing has already begun, making my own damn schematic on DIYLC (should probably practice on my Eagle).


Today, just arrived, the sale ELS (Effects Layouts Storyboardist) boards arrived (upper left red) with the MadBean supersale stuff (PCB stack in a bag right).

PPCB's latest offerings probably still a week or so out.


Now, more parts ordering is needed...


PS: Aion sale stuff pending too...
The new open source pedal I’m currently prototyping will do the same HPF and LPF functions, plus a few other things that could easily be omitted. The last needed parts came in today and all the boards are already built and tested, so it should be making noise by early next week. A PPCB version might just be in the cards sooner than later too…just sayin’.
 
Damn fig, that haul will make for some interesting builds! In my experience, the LTC1044 is easier to work with compared to the 7660. Although if I remember correctly, the datasheet circuit for voltage doubling is a bit different (I think it requires fewer diodes?).

I'll understand if you want to keep it classified, but where were you able to find those MN300x & PF5102s?
The 3008/3009s came from Cabintech, and the rest from a few eBay'rs. The jury is out on the MN3101s (I don't suspect any issue, just a new seller for me)...I have a test circuit nearly built. The others I'm confident in. You're spot on..I'm contemplating using the 1044 in place of a 7660. 👍
 
The 3008/3009s came from Cabintech, and the rest from a few eBay'rs. The jury is out on the MN3101s (I don't suspect any issue, just a new seller for me)...I have a test circuit nearly built. The others I'm confident in. You're spot on..I'm contemplating using the 1044 in place of a 7660. 👍
I may have my first build with the MN3101 same as where Fig got them done tomorrow. Will holla in a build report if it works.
 
I am kicking myself on the Pumpernickel, Omnilooper, and VF. The LP mini is still available and I wonder if you could build the HP with it, as the layout is the same. Somehow I feel like not, because the components would probably be in a different order to filter the other way.

I was thinking about contacting Julian and seeing if the schematics could be passed on to the DIY community. Or maybe even the PCB design files. Worst case, he says no and I try to take his instruction block diagrams and piece things together.
If the PCBs are the same, I'm sure you can build either one on the same board. Just resistors and caps swapping, after all.

R/C vs C/R


Would be sweet to have the design files released...
 
Shipping today:

PWHPF_v1_7.PNG

Variable high pass filter boards, which will be open source and available as an OSHpark board share once I'm satisfied with the build spec. 2" by 1.08" for now at least. I went with the Digikey DKRed PCB fab service this time around since I still have a bunch of red JLCPCB LPF boards that will be living in the same boxes.
 
some TL072's and didoes from SBP and this box of caps and resistors from Digi... wtf man? this thing is big enough to ship the guts for a Fender F5 but stuff I ordered could fit in a 125bb... somebody needs to let them know that the USPS isn't that brutal, had more damage from FedEX
 
this box of caps and resistors from Digi... wtf man? this thing is big enough to ship the guts for a Fender F5 but stuff I ordered could fit in a 125bb... somebody needs to let them know that the USPS isn't that brutal, had more damage from FedEX
That's what you get when you don't actually have to pay for shipping and the fees are just made up. Corporate accounts! To think, that waste must have an impact on retail customers since space is artificially made scarce.
 
Shipping today:

View attachment 33347

Variable high pass filter boards, which will be open source and available as an OSHpark board share once I'm satisfied with the build spec. 2" by 1.08" for now at least. I went with the Digikey DKRed PCB fab service this time around since I still have a bunch of red JLCPCB LPF boards that will be living in the same boxes.
So if these little beauties are made available through PPCB will they be through hole?
 
So if these little beauties are made available through PPCB will they be through hole?

You tell me! ;) So far Robert and I only discussed doing one with a fuller feature set (HPF/Bass/Mids/Resonant LPF probably), but he is welcome to provide boards for any of my open source widgets and you guys are welcome to work out what format and component choices you prefer in any case. Since my main thing is onboard electronics I have a pretty strong preference for SMD opamps at the very least, just because the vast majority of the good sounding low current ones only seem to come that way. But SO-8 to DIP 8 converters are a cheap and easy enough way to work around that as long as there's room for the adapter to physically fit in the build. I've gone that route in a few DIY amp builds with nary a problem so far.

FWIW, the only other SMD parts besides the two opamps on that pictured board are 1206 size resistors, which I can hand solder with even a standard 1.6mm tip pretty easily, although I'd recommend a 1.2 mm screwdriver tip. They come in 0.1% tolerance by default and are fairly hard to break, but they are considerably more expensive for sure. Just getting comfortable with getting them out of the factory packaging and finding the right tweezer config was the biggest learning curve for me, and I actually greatly prefer working with them over through hole resistors by now.
 
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