DIY ALERT: Sandin IP PCBs: show us your builds and videos!
Category: Unknown · Tags: — · Posts: 129
#1 — jnoble · 2018-09-05
UPDATE: As the title update indicates, all of the bare PCBs and assembled modules have been sent out. Please give Lars a round of applause for making these available!
Hi Everyone!
I hope everyone here realizes Lars’ incredible commitment to the SDIY community. The latest evidence is that he just sent me over 50 of each of the Sandin IP Differentiator and Function Generator PCBs for FREE distribution to the community.
All anyone needs to do is get in touch with me and tell me which board(s) you want (limit of 1 each per person for this round to maximize the number of people who get one) and give me a mailing address. I’ll take it from there. Note that there may be a few countries that require significant extra postage. I’ll let you know if that’s the case–otherwise I have it covered.
I will be publishing up to date BOMs (and pre-filled carts at Mouser for the majority of components) shortly–after I make sure the parts all fit.
I’m also going to offer assembled units by request. There’s about $22 of components in the Differentiator and $29 in the Function Generator, so I’m thinking of $70 and $77 shipped CONUS with a plain mill finish CNC’d 6061T6 0.050" aluminum panel ready for your DIY legends. (I’ll make panels in whatever format–Euro, Pulp Logic tile, Intellijel tile–for $10 each) I’m basically looking to get $40 for parts procurement, assembly, and faceplate machining; the rest is for parts, packaging, and shipping. If anyone out there wants to offer built units on similar terms, I can forward some boards. The idea is to get these into people’s video synths, not profiteer from Lars’ generosity.
If anyone wants to chip in with panel designs or whatever, please feel invited to this party.
I will do my best to manage and respond to requests in a timely manner, but I do have a lot of other demands on my time and may miss some. If you don’t get a response from me in a day or two that includes a confirmation number (which corresponds to a row in a spreadsheet), then please ping me again.
I still can’t believe this is happening.
Here is the documentation:
s3-us-west-2.amazonaws.comhttps://s3-us-west-2.amazonaws.com/lzx-manuals/sandin-ip-function-generator.pdfhttps://s3-us-west-2.amazonaws.com/lzx-manuals/sandin-ip-function-generator.pdf428.07 KB
Link: sandin-ip-function-generator.pdf
s3-us-west-2.amazonaws.comhttps://s3-us-west-2.amazonaws.com/lzx-manuals/sandin-ip-differentiator.pdfhttps://s3-us-west-2.amazonaws.com/lzx-manuals/sandin-ip-differentiator.pdf443.79 KB
Link: sandin-ip-differentiator.pdf
Here are dimensioned Euro panel drawings from the files I’m using to cut them on my mill:
s3-us-west-2.amazonaws.comhttps://s3-us-west-2.amazonaws.com/lzx-manuals/sandineuropanels.pdfhttps://s3-us-west-2.amazonaws.com/lzx-manuals/sandineuropanels.pdf111.75 KB
Link: sandineuropanels.pdf
Here’s a Mouser cart for the Function Generator: https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=207c9e52e2
UPDATED CART: I was missing the 10uF caps!
Additional parts:
- 2X8 power header. If you don’t already have some, you can add this to your Mouser order: https://www.mouser.com/ProductDetail/?qs=sGAEpiMZZMs%2bGHln7q6pm67xkeHW1IZNWFr6tXq49bE%3D
- (3) 10k B taper 9mm right angle Alpha pots. You’ll need (3) knobs also. You can get them and a 16-to-16 conductor power cable from many sources. I like Erthenvar’s Davies clone knobs: https://shop.erthenvar.com/collections/9mm-potentiometers/products/9mm-smooth-right-angle-pots
That should be complete, but PLEASE double check against the BOM before ordering and PLEASE let me know if the above needs to be updated.
Here’s the cart for the Differentiator: https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=12a18fee0e
Additional parts:
- 2X8 power header. If you don’t already have some, you can add this to your Mouser order: https://www.mouser.com/ProductDetail/?qs=sGAEpiMZZMs%2bGHln7q6pm67xkeHW1IZNWFr6tXq49bE%3D
- (8) Switchcraft SC1457-ND 3.5mm jacks: https://www.digikey.com/product-detail/en/35RAPC2AV/SC1457-ND/772080
Again, I am fairly sure this is complete, but please do check.
#2 — pbalj · 2018-09-05
should we pm you here? definitely want one of each!!!
#3 — jnoble · 2018-09-05
pbalj wrote:
should we pm you here? definitely want one of each!!!
Yes, I should have been more specific: PM me here please.
I need your name and shipping address and whether you want just one or both PCB(s) or assembly etc.
#5 — JunkRhythm · 2018-09-05
Thank you @creatorlars and @jnoble!
#6 — pbalj · 2018-09-05
Thanks @obama!
oops i think i did that wrong…
thanks @creatorlars and @jnoble
#8 — jnoble · 2018-09-05
To our non-USA friends receiving PCBs only:
It appears the officially sanctioned way to send something like this internationally is via First Class Parcel, which starts at US$14 and requires a customs declaration no matter what the value.
I think that’s silly for a couple of free PCBs that weigh 22g per set and will fit just fine in an envelope.
I therefore intend on sending these as a letter, and my understanding is that many people have successfully sent PCBs this way–especially small & light ones like these. Postage is just slightly more than US domestic rates and not worth the trouble of dealing with Paypal for.
You may know something about your country’s post and customs systems that I don’t, however, so please advise if you think this won’t work.
#9 — peloazul · 2018-09-05
Thank you for organizing this! PMd
#10 — Fritz · 2018-09-06
PM’d- Extremely generous, thanks!
#11 — Tan_Sat · 2018-09-06
Whoa! Super interested. Thank you!!! I just need to figure out how to send a PM
#12 — MrDoctorTom · 2018-09-06
Well, it looks like I have to stop lurking and get involved! Trying to send you a pm now. Thanks! To you and of course to Lars!
#13 — jnoble · 2018-09-06
Quick update: 13 sets are spoken for out of about 50.
I just received my Mouser and Digi-Key orders and will assemble one each of the modules to make sure the BOMs are OK. The good news is that it looks like I found the right jacks (Switchcraft!?!?) for the Differentiator: they fit the PCB fine. I’ll publish the carts once I have the modules tested. I used Mouser, Digikey (those jacks), Erthenvar (pots, knobs, power cables), and Futurelec (.100" headers for power), but the BOMs are pretty generic except for the jacks.
Once that’s done I’ll cut a few Euro panels so those who asked for assembled units can see what they’re buying before committing–I’m just doing unlegended CNC cut mill finish aluminum.
#14 — reverselandfill · 2018-09-06
about international shipping:
I know a few people, (CGS for example) who use envelope mail . he charged about $3.00 for shipping if I recall correctly. This all went perfect. (no trouble at customs)
I sometimes send pcb’s to the USA this way too. way cheaper and mostly as fast as most other options.
#15 — jnoble · 2018-09-06
reverselandfill wrote:
This all went perfect. (no trouble at customs)
That’s good to hear with customs, thanks for the information. These work out to a smidgen under 1 oz. for a packed set of 2 (6 sets weigh 5.95 oz.), so it’s 50 cents for domestic mail and $1.36 for international (effectively $1.50 = 3 stamps).
#16 — ellisg · 2018-09-07
Hi - I’d also love one of each, but I also can’t figure out how to PM you…? Can you put me on the list while I work it out please… I’m in the UK, so I’ll want to pay for shipping… many thanks!
#17 — jnoble · 2018-09-07
ellisg wrote:
but I also can’t figure out how to PM you…?
Click on my name (“jnoble”), and then click “Message”.
#18 — ellisg · 2018-09-07
Ah, thanks John, but I don’t get a “Message” option when I click on your name. It’s as though I’m not allowed to message yet? In fairness, I did just join… not sure. I’ll persevere…!
#19 — Tan_Sat · 2018-09-07
Yeah. It makes you wait a little bit and interact before you get message privileges. It doesn’t take long though! Hang in there!
#20 — ellisg · 2018-09-07
Ah, many thanks @Tan_Sat - it did indeed pop up a little while later. All sorted now.
#21 — Analogmonster · 2018-09-08
Hi, I’m new and waiting for pm to be actived but I would love both pcbs and will message about it as soon as I can. I was just putting together a mouser cart for my first few lzx modules so its perfect timing
#22 — jnoble · 2018-09-09
Update:
Mouser parts actually arrived today (that other Mouser box was some back ordered resistors I’d forgotten about …). I got the function generator built and mounted in a partially cut Intellijel 1U tile panel (I managed to snap my only .125" end mill cutting the outside profile, oops). The circuit works great and does some unexpectedly cool things. I’ll post the Mouser cart and pointers to other resources shortly.
I’ll get new end mills on Tuesday. In the meantime I’ll make some dimensioned panel drawings and post them.
Differentiator is next!
P.S. I’ve shipped all but the most recent couple of PCB-only requests. There are about 30 sets remaining.
#23 — spaceape · 2018-09-09
Hiya, I know im not approved as a member but ive got a vis cortex and would love to assemble these lil guys. Totally understand that im a newb to the forum, but would love to be on any waiting list and be patient. Cheers
#24 — jnoble · 2018-09-09
@Analogmonster@spaceape – check your messages.
#25 — Fritz · 2018-09-09
Got mine yesterday! Thnx @jnoble!!! Thnx @creatorlars!!!
#26 — Cryptic · 2018-09-09
Sorry for not direct messaging, I’m not sure how, I’ve just joined this forum after meeting Lars at Knobcon.
Are any of these left? I love building DIY modules and this would be a cool addition to what I have.
#27 — JonasBers · 2018-09-10
Just PM’d you. THANKS!!!
#28 — CountFunkula · 2018-09-10
Also very interested in some sandin ip PCBs, if still available.
…also don’t quite have messaging privileges yet. Thanks!
#29 — Branko · 2018-09-10
Hey! If available, I’d take one of each as well! I’m located in Canada so I can cover shipping. -B
#30 — 337is · 2018-09-10
W007! Been waiting on these for a while and happy to have a chance to build. Thank you and PMd.b
#31 — jnoble · 2018-09-10
Update: 30 sets are spoken for, 22 sets remaining. All PCB-only requests received as of this morning (Monday the 10th) have shipped. I will hold on through at least the end of this week before making a parts order for the assembled unit requests. I will probably cut faceplates this week (pending receipt of some new .125" end mills) and send those out to people with PCB+faceplate requests.
A note to our non-USA friends: no need to inquire about postage for PCB-only shipments to most countries, I’ve got it covered.
#32 — MrDoctorTom · 2018-09-10
^ the hero we need right here folks.
#33 — microtonal · 2018-09-11
Does anyone have a part number for the 3.5 mm jacks on the Differentiator? I do not see any obvious matches at digikey or mouser.
#34 — jnoble · 2018-09-11
microtonal wrote:
Does anyone have a part number for the 3.5 mm jacks on the Differentiator? I do not see any obvious matches at digikey or mouser.
These seem to be the ones. I have some on hand but have not yet soldered them in to be 100.00% sure:
https://www.digikey.com/en/products/detail/35RAPC2AV/SC1457-ND/772080Order today, ships today. 35RAPC2AV – 3.50mm (0.141", 1/8", Mini Plug) - Headphone Phone Jack Mono Connector Solder Eyelet(s) from Switchcraft Inc.. Pricing and Availability on millions of electronic components from Digi-Key Electronics.
Link: 35RAPC2AV | Digi-Key Electronics
#35 — jnoble · 2018-09-11
Mouser cart for the Function Generator added to the top post.
#36 — jnoble · 2018-09-11
Updated Function Generator Mouser cart, added Differentiator cart.
Also, @creatorlars, there are some legends on the board that don’t have BOM entries:
- R29
- C1
- C5
I ASSume these are DNP, but it’s always good to confirm.
#37 — creatorlars · 2018-09-11
OK, it’s on my to do queue for the week and I’ll check on that ASAP!
#38 — jnoble · 2018-09-11
Those legends are for the Differentiator, in case I wasn’t clear.
#39 — MrDoctorTom · 2018-09-11
Mine arrived today, shout out to @jnoble for sending these out and making it happen. What’s everyone doing for panels? It’s going to kill me if I can’t get them to look at least a little cohesive with the rest of the system.
#40 — JunkRhythm · 2018-09-11
I stumbled upon a photo of a built unit with all three of those designators showing up as DNP. Since the project was originally pre-built or DIY the photo could be a little off.
Also looks like you got the jack selection dead on.
#41 — jnoble · 2018-09-11
Nice sleuthing, @JunkRhythm – thanks!
Does J18 link to the flux capacitor?
So many mysteries!
#42 — creatorlars · 2018-09-12
I remember now. Those are all DNP. The two caps are in parallel with the feedback resistors for the summing amp. You could put something very small there (2pF) if you noticed any ringing. Or something large there if you wanted to intentionally soften the outputs (turning it into a kind of bandpass filter almost.) The extra resistor placement was for adaptation as a replacement board for an original Sandin IP system, where I/Os were 75 ohm driven and terminated. So I’m guessing it’s a gain setting resistor for the output (to drive at 75 ohms, you would want 2X gain.)
I think we’re good.
#43 — joem · 2018-09-12
Looks like you put the function generator cart up in place of the differentiator cart.
#44 — jnoble · 2018-09-12
joem wrote:
Looks like you put the function generator cart up in place of the differentiator cart.
Good catch, 20 characters of thanks!
#45 — tke · 2018-09-12
hello, how do i pm you about the pcbs - can i still have one each please? i’m in the uk and just started to join the lzx community. thank you
#46 — sprthhfk · 2018-09-13
Interested in one of each. I just joined the community and can’t seem to figure out how to send a direct message…can anyone fill me in?
#47 — tke · 2018-09-13
i’ve used these right-angle 3.5mm jacks from aliexpress for several diy synth modules (PMFoundations). 20 jacks for 1.53 usd - nothing to complain about the jack’s quality. https://www.aliexpress.com/item/3-5MM-PJ-323M-with-nut-3-pin-socket-female-audio-socket-PJ-323-Free-shipping/32853207259.html
#48 — jnoble · 2018-09-13
That’s a crazy deal on those jacks! I’ll build the assembled units with Switchcraft, but thrifty builders should take note of this.
#49 — JonasBers · 2018-09-13
I knew the schematics were around somewhere – found 'em:https://www.muffwiggler.com/forum/viewtopic.php?t=32384&highlight=
#50 — jnoble · 2018-09-13
Update: 40 sets are spoken for and all PCB-only requests made to date have shipped. I had one set returned for additional postage, but I had a talk with my mail carrier and he apologized and accepted the postage as is. I
USPSShipping boxes and mounting screws for assembled modules are en route.
I finally received a pack of .125" end mills today and was able to cut a panel for my own Intellijel tile format IP Function Generator:
I’ll complete the Euro format drawings in the next day or two and start cutting panels. I’m holding off on the electronic parts order through tomorrow (Friday) to accommodate any additional assembled module requests; the order will have enough parts for 2-3 extra modules, so if anyone misses the cutoff they will still have a chance.
#51 — sprthhfk · 2018-09-13
Could I get one of each? Just the PCBs…I’d message you directly, but can’t figure out how.
#52 — destroythings · 2018-09-13
Can confirm i received my PCB’S today shipped to Germany.
Thanks
#53 — jnoble · 2018-09-13
@sprthhfk – check your messages.
@destroythings – 6 days, that’s amazing! Postage was $1.50, it seems like magic.
Further update: I cut a panel for my Differentiator (Intellijel tile format again), and tested everything: it’s a really cool module, and the jacks fit perfectly. Next up: Euro panels!
#54 — wednesdayayay · 2018-09-14
I’m so happy you are doing 1u tiles are these going to be available for the people who bought assembled units?
#55 — jnoble · 2018-09-14
wednesdayayay wrote:
I’m so happy you are doing 1u tiles are these going to be available for the people who bought assembled units?
Sure, just specify which format you want! I don’t have a Pulp Logic case here for testing that 1U format, but I’m sure his drawings are accurate. You might consider getting Euro faceplates too in case you want to move the modules out of the tile row or get a different case.
I now have these in ModularGrid:
https://www.modulargrid.net/e/other-unknown-sandin-ip-function-generatorOther/unknown Sandin IP Function Generator - Eurorack Module - Built from the Great LZX PCB Donation of 2018. :-)
Link: Other/unknown Sandin IP Function Generator
https://www.modulargrid.net/e/other-unknown-sandin-ip-differentiatorOther/unknown Sandin IP Differentiator - Eurorack Module - Built from the Great LZX PCB Donation of 2018. :-)
Link: Other/unknown Sandin IP Differentiator
#56 — wiatrob · 2018-09-14
Messaged you. Can’t believe I missed this thread…
#57 — reverselandfill · 2018-09-14
mine just came in. Thanks!!
#58 — Branko · 2018-09-14
Do you find that the build is sturdy with those 10k pots? I couldn’t for the life of me find the correct right angle ones but was considering doing exactly as pictured above.
#59 — jnoble · 2018-09-14
Branko wrote:
Do you find that the build is sturdy with those 10k pots?
Yes, the PCB is so small I’m not worried about it.
Branko wrote:
I couldn’t for the life of me find the correct right angle ones but was considering doing exactly as pictured above.
This is probably your cheapest option:
https://www.thonk.co.uk/shop/alpha-9mm-pots-right-angle/
#60 — pbalj · 2018-09-14
germany quicker than canada!
#61 — spaceape · 2018-09-15
got the boards the day before yesterday! thanks!
#62 — mcbrown9 · 2018-09-15
@jnoble If there are any pcbs left I would love to build one of each! (I can’t find the pm button)
#63 — jnoble · 2018-09-15
UPDATE:
I cut a couple of test panels today and tested them with partial builds of both modules. Everything fits! Drawings for the Euro panels have been added to the top post. “X” marks the spot for center punching, and you can probably get away with a .25" drill for everything. A 6mm drill will be a little small for some toggle switches, maybe, but should otherwise work OK.
This is more or less what the assembled units will look like (many components are missing from the PCBs on these and the knobs are Small Bear Davies clones, not the nicer Erthenvar Davies clones I’ll be using):
#64 — wednesdayayay · 2018-09-15
I can only imagine that pairing the function generator with the luma processor from the vidiot would be great fun
faceplate art project!
#65 — jnoble · 2018-09-15
wednesdayayay wrote:
I can only imagine that pairing the function generator with the luma processor from the vidiot would be great fun
I have done this with the luma processor patch on the Arch, and it’s quite cool indeed.
#66 — alargeformat · 2018-09-15
I received mine in the mail today. Thank you thank you thank you!
#67 — destroythings · 2018-09-15
Great. Excited for the builds.
Thanks for update.
I guess for scribbling on the panel it would be the same as this?
https://www.modulargrid.net/e/lzx-industries-differentiatorLZX Industries Differentiator - Eurorack Module - High-pass filtering, edge extraction and enhancement
Link: LZX Industries Differentiator
#68 — destroythings · 2018-09-15
And same for this.
https://www.modulargrid.net/e/lzx-industries-function-generatorLZX Industries Function Generator - Eurorack Module - Waveshaping, solarization effects
Link: LZX Industries Function Generator
#69 — jnoble · 2018-09-15
Yes, the order is the same as the “factory” faceplates as long as the PCB is to the left (looking from the front).
#70 — pbalj · 2018-09-15
as lars said to me, the proper way to do the panel is with dymo labels. see the original IPs
#71 — Fabong · 2018-09-16
I’ve been lurking on the forum for some time but this has convinced me to sign up, I’d love a set of PCBs so I’ll be in touch whenever the option to PM is made available, hopefully there will still be some left by then.
#72 — CountFunkula · 2018-09-16
Pcbs arrived yesterday. Thank you!!!
#73 — jnoble · 2018-09-16
Nice to see these getting through the mail safely.
Sunday update:
Mouser, Digi-Key, and Erthenvar orders were submitted today. I have enough parts coming to fulfill all assembled module requests plus (3) more latecomers. I expect to start shipping completed modules the week of the 24th. I’ll notify you via DM when your set is ready to ship. Domestic USA postage is included in the US$147.00 price; I’ll know the actual international postage once I’m able to weigh a completed & boxed set, but I estimate it will be in the neighborhood of US$10-15 extra.
Panel + PCB orders will start shipping tomorrow. Extra postage is minimal (50 cents), so $20 covers everything.
There are 9 sets of PCBs remaining. I can make as many panels as needed, including for people who already have PCBs, for $10 each, shipped. As a reminder, these are bare aluminum and ready for your Dymo, Sharpie, or psychedelic oil paint art.
#74 — allthesixes666 · 2018-09-17
came here to say “wwwwoooaaah YEAH!” - sending a PM now
#75 — ozarkbilly · 2018-09-17
I would like a pair of these Sandin PCBs.
…embarrassingly I can’t figure out how to PM here.
#76 — jnoble · 2018-09-17
PCB + Faceplate orders are packed and ready to ship, you should see a message in your inbox if this pertains to you.
Due to an accounting error (aka “John can’t count”), there are actually 4 sets of bare PCBs remaining and 3 assembled sets not yet spoken for.
#77 — JonasBers · 2018-09-17
To PM > click on the person’s name and a “user card” will pop-up with a message button. You need to earn “basic” privileges before you can PM. Read a few topics, read the guidelines, and fill out your profile info. You’ll be well on your way.
#78 — hansblix · 2018-09-18
a friend tipped me about this so just registered and can’t pm. If there is still some left i would love a set of pcb’s.
#79 — sean · 2018-09-18
@jnoble In the same boat as hansblix. Except would love to get an assembled pair, if one of each remain. Can you PM me? Thanks!
Edit: sorry, just realized how easy it is to get trusted status and PM sent. Should’ve read JonasBers’ post, above.
#80 — jnoble · 2018-09-19
Update:
All the bare PCBs have been shipped! Thanks for the ongoing delivery reports, my packing method was a little experimental.
All euro panel orders have shipped as of yesterday also. Any further panel orders will ship after I’ve completed the run of assembled modules.
Shipping boxes, mounting screws, and the Erthenvar order with ribbon cables, pots, and knobs have arrived. I am awaiting parts from Mouser and Digi-Key, which will likely arrive today. I’m still on track to start shipping them early next week.
#81 — Branko · 2018-09-19
Got mine yesterday, thanks!!
#82 — CountFunkula · 2018-09-20
jnoble wrote:
my packing method was a little experimental.
>>>
Withstood the extremely damp Florida air like a champ!
#83 — wednesdayayay · 2018-09-20
whereabouts are you at in florida?
I’m near fort myers and naples
actually on pine island
#84 — Branko · 2018-09-20
Ohh! I just saw the europanel measurements update. Gonna 3d print a panel right away! Thanks.
#85 — CountFunkula · 2018-09-20
@wednesdayayay. Right on! I’m in Orlando.
#86 — VanTa · 2018-09-22
damn, I missed it…
#87 — jnoble · 2018-09-22
Making progress on assembly!
#88 — allthesixes666 · 2018-09-24
@jnoble - panels & boards arrived today, thanks!
will have to wait until after http://vectorhackfestival.com/ before I can make a start on them
#89 — jnoble · 2018-09-24
Update:
All the Differentiators are assembled and ready for testing & packing. I’m working on Function Generators today. To avoid distraction and resulting confusion, I think I’ll finish those before shipping anything so you probably won’t see payment requests until later this week. This has been a fun project!
#90 — Branko · 2018-09-24
That is a ton of work, well done!
I skipped the 3d printed panels and built a double unit since I had an extra aluminum one.
Hand drilled it so it isn’t perfect but ah well.
#91 — wednesdayayay · 2018-09-24
love the hand cut look!
#92 — jnoble · 2018-09-24
@Branko, that’s a pretty cool idea! Nice work!
#93 — jnoble · 2018-09-25
… annnnd a full 96hp (my old and semi-famous “FSM” case) of Sandin IP modules nearly ready for testing, packing and shipping.
#94 — mkho · 2018-09-26
Edit: I am late to the party and just joined the forums, so I don’t have access to sending PMs. jnoble I am interested in a set of the S.I.P. based function generator and differentiator modules. Please reach out!
#95 — jnoble · 2018-09-26
Update: the first notifications for assembled modules have gone out.
Testing on a video synth is pretty cool: I made a visual comparator with a C6 fader and a TVLFO that rapidly switches between a known good module and the device under test (both are being fed a complex image from my Andor 1). The ole Mark I Eyeball picks up even slight differences very easily.
#96 — mkho · 2018-09-26
Can anyone chime in with their thoughts on there ever being a euro rack based S.I.P. Amplitude Classifier module ? @creatorlars
#98 — JunkRhythm · 2018-09-26
I think the Octal Video Quantizer & Sequencer from the Visionary Series is the LZX take on that process.
#99 — joem · 2018-09-27
I haven’t built mine yet (waiting on parts), but I did label the panels. I really didn’t want to sharpie mine, so I used a cheapo label maker and based it mostly on the labels from the LZX panels. I’m pretty pleased with the results, they still look quite DIY but the labels are more legible than my sharpie-ing would have been. I might end up using a sharpie to make the outputs stand out more… We’ll see. Big thanks to @jnoble and @creatorlars (and anyone else who might have been involved)!!
#100 — pbalj · 2018-09-27
pcbs arrived, i too will have to wait til after vectorhack to assemble them.
#101 — jnoble · 2018-09-27
It makes me happy to see these out in the wild.
#102 — reverselandfill · 2018-09-27
note for the people who missed the pcb’s:
the schematics are online, you could DIY a PCB run yourself.
#103 — wednesdayayay · 2018-10-04
instagram.comhttps://www.instagram.com/p/BogpcSWFC03/
https://www.instagram.com/p/BogpcSWFC03/7 Likes, 0 Comments - Nichole Pichon (@nicholepichon) on Instagram: “Jaunty clock lock house walls #lzxindustries #videosynth #lzxarch #lzxvisualcortex #lzxpendulum…”Link: Nichole Pichon
instagram.comhttps://www.instagram.com/p/BogxwUngQ82/
10 Likes, 2 Comments - Nichole Pichon (@nicholepichon) on Instagram: “Skellington #hollywoodhandbook #videosynth #lzxvisualcortex don’t get too spooked…”Link: Nichole Pichon
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here is some stuff I did with the function generator (I fully intended to plug in the differentiator as well but didn’t even get to it and then suddenly an hour was just gone) this morning
@creatorlars I was getting some neat stuff going from luma => function gen => arch (mirror out) => arch 2 (mirror out) that gave me some staircase vibes (at least on video I haven’t tried with oscillators/ramps yet). Am I daft or would there actually be some crossover? I was also using a lot of the compositing functions on the visual cortex.
thank you so much @creatorlars and @jnoble for making this happen
I’m ever so excited to play with the vidiot luma processor and the function generator/arch combo
#104 — jnoble · 2018-10-06
@mkho please check your messages.
#105 — blob · 2018-10-06
Hey ya’ll! Finished my differ and fg. Thank you John Noble for sending those pcb’s out! I’ll be using them for projections tonight at the kenton club around 9pm if anyone wants to see it in action/interact with it. Here’s a sample of the sort thing I’ve been up to https://www.instagram.com/p/BocJRoyFO-M/?utm_source=ig_web_copy_link
#106 — safetygoggles · 2018-10-10
Just got my pcbs in the mail today… will check back in after a couple feet of solder. Thanks again!
#107 — CountFunkula · 2018-10-16
#108 — Fritz · 2018-12-02
ok, finally had some time to finish this. sourced some oak from the property I grew up on during a recent trip home. mostly happy about how the panel turned out tho i think one or two of those holes got away from me a bit. it was my first diy panel! looking forward to doing more.
as far as patching goes- really having fun with feedback cam into these two, especially outputting to the mapper. thats the patch in the video anyway.
thanks again to @jnoble and @creatorlars
also, thanks to @reverselandfill and @Branko for inspiring the panel
#109 — jo_dem · 2018-12-13
are these still available? just joined the community
#110 — jnoble · 2018-12-17
Sorry, they are all gone.
#111 — Genlok · 2019-04-12
So I see these are all gone, any chance of another round? I’m interested in either DIY or built versions.
#112 — reverselandfill · 2019-04-12
I have made a pcb layout, and could do another pcb run… if that is ok
I was thinking of joining the Differentiator with a mixer, for feedback patches.
Maybe it will fit on one pcb.
The Function generator could be a triple module , with inputs normalised. For easy luma re-coloring.
(this is what I do with my function generators most. it looks very good!)
There is also a schematic with a gain pot, maybe I’ll try that.
#113 — northerntao · 2019-04-13
I would love one or two myself!
#114 — 743v04 · 2019-04-15
I would also love for another run to occur as I missed out on the first just barely!
#115 — Genlok · 2019-04-16
I like this idea a lot! Probably deserving of a new thread if you go on with it
#116 — hdd · 2019-04-16
yes, I would be on the run too.
#117 — ablanton · 2019-04-17
I too would love to have one of these modules!! Another round would be amazing!
#118 — brendanleespengler · 2019-04-17
I’d also be interested in one of each!
#119 — reverselandfill · 2019-04-17
see these threads:
#120 — fluxmonkey · 2019-04-18
I too would be interested.
#121 — rossgrady · 2019-06-23
@creatorlars Are the schematics and/or PCB layouts for these Sandin modules posted anywhere? I don’t see them on the LZX github & I thought I had read previously that you intended to post them. Were they in the old website archive & didn’t get migrated over? Thanks!
#122 — otoskope · 2019-06-24
I started my LZX jourmey around last September, and it took a while before I found the forum, so I totally missed this, too. Another round would be wonderful.
#124 — reverselandfill · 2019-06-25
the function generator layout is mostly done, I want to test an extra feature.
then I will order the pcb’s & panels.
the differentiator feedback project is still in design phase.
#125 — tke · 2020-01-17
vidiot + differentiator / function generator - can someone point me towards some simple patch ideas - just to test that both DIY modules are working fine.
#126 — davev · 2023-04-10
@jnoble@creatorlars I got to see the SAIC Sandin last week and am inspired. The links no longer work for the source file PDFs of your modules - Could you please send me a link to the source for these? I’d love to take a look, learn from what you did, and try my hand at translating another of the old modules to fill out the system.
Thanks!
#127 — joem · 2023-04-10
I’m not sure if the LZX versions that were shared earlier in this thread are currently shared anywhere, but there’s a version of the LZX version of the Differentiator that @pbalj made here: GitHub - Teletect/IP-Differentiator: Eurorack 4hp Sandin IP Differentiator
Also, @reverselandfill made a triple function generator which if I’m not mistaken is very similar to the the LZX version of the single Function generator circuit, but done three times: Triple Function Generator – Reverselandfill
#128 — creatorlars · 2023-04-10
The links from Joe above are good! Let me know if you want to talk thru implementation of any of the other Sandin IP modules, I can advise on parts or strategies to employ for any of them. Generally it’s all pretty doable to do the functional clones! But you’ll need to use different IO buffering strategies and different ICs in many cases. The Adder/Multiplier for example, could be built from function blocks documented in the Cadet 7 and Cadet 6 projects.
#129 — davev · 2023-04-12
Thanks @creatorlars! and @joem! I’ll take a look.
#130 — davev · 2023-04-12
@creatorlars - On the function generator Instead of using Dan’s original “Standard Driver” (Complimentary Current Amplifier) it looks like you are using 2 inverting stages of the LM6172 op amps. Instead of 75ohm output impedance, you use 499ohm. Can you help me understand these changes? Is this a change to play well with LZX standards?
#131 — Robbertunist · 2023-04-12
Have you checked out these 2 pages @davev?
[WORK IN PROGRESS, FEEDBACK IN THREAD WELCOMED] > LZX Industries Patchable Video Standard V1.0> The Patchable Video Standard proposes an electrical and interface specification for wide bandwidth analog computing instruments intended for creative and expressive applications. It is optimized for, but not limited to: (1) generating and processing analog RGB video graphics in SD resolutions, (2) affordable devices which are accessible to working artists and not just big studios, and (3) maximum patcha…>
Under the first one, 499r output impedence is discussed.
I haven’t looked at this page but the title sounds suitable:
How does 1V DC signal differ from 75R Video signal? Vidiot has these distinctions in Luma and Colorizer sections. > I know LVX is driving the 1V standard, but what does that mean? > Is it simple enough to explain here or where is a good source to read up?>
#132 — creatorlars · 2023-04-12
davev wrote:
On the function generator Instead of using Dan’s original “Standard Driver” (Complimentary Current Amplifier) it looks like you are using 2 inverting stages of the LM6172 op amps. Instead of 75ohm output impedance, you use 499ohm. Can you help me understand these changes? Is this a change to play well with LZX standards?
Correct. Sandin IP originally used +/-0.5V signals driven at 2X gain (+/-1V) with low impedance (75R) inputs. LZX (and compatible makers) use 0-1V DC signals with high impedance (100K) inputs, which make them compatible with EuroRack modules and other synthesizers.
So in doing these adaptations, I treated it like you have a frontend/backend circuit at the IO, with an application circuit in between. I replaced the frontend/backend circuits from the original Sandin IP circuits with typical LZX 1V buffer/driver circuits (you can find reference designs in the Cadet schematics.) The application circuit in between, I redesigned with modern replacements for any obsolete/unobtainable ICs, but tried to keep anything else as similar to the original designs as possible.
Dan got to see the outputs from the adaptation modules and give them his approval before we released the designs – he said the results were much cleaner than the original IP in terms of noise floor, and that the functions worked as he had originally intended.
#133 — davev · 2023-04-12
Thanks for the info. very helpful.