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Comment: new BOM and first Buildguide
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titleProject

Projecttitel: VS-1

Status: 
Status
colourGreen
titlein build

Startdate: 06/2020

Duedate: 04/2024

Updated:

05

09.

feb

Feb.2024

Manufacture link: http://abstraktinstruments.com

https://abstraktinstruments.com/vs1-diy/

https://www.kickstarter.com/projects/abstraktinstruments/vs-1-polyphonic-analog-synthesizer/description

Facebook group: (I´m the admin). https://www.facebook.com/groups/849435342474238

send me a message if you dont get access

Modwiggler Build thread:

https://www.modwiggler.com/forum/viewtopic.php?t=281217

...

https://www.kickstarter.com/projects/abstraktinstruments/vs-1-polyphonic-analog-synthesizer/description


Table of Contents
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Generel Info bit the Kickstarter goals: 

Expand
titleDIY PCB

...

SET CONTAINS..

Image Modified


Stretchgoals:

  • 120K - MPE Support
  • 140K - Direct Outputs
  • 160K - Stereo Analog Chorus - We have a hell of an analog chorus designed - we can't add cost & commit resources to implement it unless we reach certain cost targets. 
  • 180K SD Card 
  • all Stretch Goals arrived 





BOM:

VS-1_DIY_BOM(v102).xlsx from 04.Jan.2024

VS-1_DIY_BOM(v103).xlsx from 24.Jan.2024

VS-1_DIY_BOM(v104).xlsx from 09.Feb.2024  please look at t he changeling in the BOM, in case you used the BOM 1.03 previous.


Soldercore

you need 2 solder core types:

...

https://www.digikey.de/de/products/detail/kester-solder/24-6337-8809/365521?s=N4IgTCBcDa4CwFoBsBmFB2BAOLAGAnCALoC%2BQA

part nr.  

24-6337-8809

this is the old BOM and should help people to find some parts, this isn't the full BOM:

...

Mouser card official from abstract (updated 17.feb2020):

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=8122018b4d

my mouser BOM:

todo: amount based on earlier BOM - must Change.

...


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Groupbuy plan: - cancelled, abstrakt instruments offer a Full-partskit for a great price 999USD

shop:

https://www.abstraktinstruments.com/product/vs-1-synth-full-parts-kit/

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LM3046M w.Adapter SMD

CA3146/LM3146 better temperature

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Schematics: (copy from 09.Feb.2024)

vs1_schematics.pdf

Build it: 

Please see the Altium 365 Viewer documentation for full details on the cloud-based tool.

Mainboard
Voice Motherboard
Voice Card
Output Board
Panelboard
DAC Board
I/O Board


Build Manual:

Please Note: The VS-1 Build Manual is still in draft form, currently draft v0.83. Formatting may change, and Section 3 on calibration is yet to be completed. There are also a few steps left in section 2 to be completed.

vs1_build_manual_v0.83.pdf


furthermore watch all YT videos on Brians Channel:

https://www.youtube.com/@abstraktinstruments8666



Issues/Failures/Improvements


IDDateBug/Issue/Improvementaffected part/pcbIssueFix reported byreported to developerInfo from developeraffected versionfixed pcb version
1Jan 2024

Silkscreen wrong

Voice Motherboard

diode wrong silksvcreen orientationD13

D13 

The Silkscreen is correct on the PCB

install against silkscreenmodwiggler userno
diythis was a wrong issue !!
225.Jan 2024infoPSU

check that your PSU is still modified with other regulators

my psu was still modified with the correct parts since it was bought as Partkit from Brian, back in 2020.

perform just a visible check and keep in mind to test the psu later without attached Device/pcbs, as described in the YT Videos/guide.Patrickno(tick) diy
325.Jan 2024build infoVoice and Voice Motherboard

you have to respect that the MOLEX connectors on the Voice Motherboard and Voices have to installed in one step.

You cannot start with soldering the molex connectors at the pcb without align it against the opposite part.

do this: 

option 1:

  1. mark every voice card with a number which match with the voice motherboard slot number
    1. insert the Molex pinheaders in the voice motherboard slot 1 without soldering it
    2. insert in voice 1 the molex connector and solder only one middle pin per connector, correct the alignment If required
    3. insert voice 1 in voice motherboard1 and solder one pin on the voice mobo Molex connector.
    4. check and align - solder more pins.

option 2:

a.  insert in voice 1 the molex connector and solder only one middle pin per connector, correct the alignment If required

b. insert in the connector the connector  which is required for the voice mobo.

c. put the voice to slot 1 and solder it - one pin per connector

d. check, align and solder more pins

do not install the molex for now on voice card and voice motherboard,

ill update this issue point later

Patrickno

It's highly recommended to use a ruler or other exact flat precisely tool to allign the Molex Pin headers in a row. This makes things easier.


Image Added

Patrickno(tick)  valid - tested by Patrick

427.Jan.2024BOM failure Voicecard

Voice Cards BOM lists 1.5M resistor for R7 and R45, but those are already filled with 49.9K resistors as per the BOM and the schematic

wait on validation, DO NOT INSTALL R7/R45

do not populate R7 and R45

Stuck and Patrick
not validaded validated nowBOM 1.0.3
527.Jan.2024Bom failure ?Output board

On the Output board - R22 isn’t listed on the BOM, schematic says 2.2K

wait on validationFacebook Sduck
not validaded notvalidated nowBOM 1.0.3
627.Jan.2024InfoOutput board

C22 is DNP - do not populate

C22 is DNP - do not populateFacebook Sduck
not validaded notvalidated nowBOM 1.0.3
727.Jan.2024BOM failureOutput Board

Q15, 16, 17, 18 aren’t listed on the BOM

is  2SC2878Facebook Sduck
not validaded nowvalidatedBOM 1.0.3
828.jan 2024infoVoicecard

"Note that R140 and R141 are the preinstalled smt resistors on the back."


Facebook Sduck
valid (tick) BOM 1.0.3
928.jan 2024infoVoicecard

"Brian for some reason doesn't list parts that are back in the "Rare Parts" list, so A3 is an CA3086N; A10, A12, A13, A14, A15 are all AS3080E; and A18 and A19 are AS3310."


Facebook Sduck

BOM 1.0.3
1028.jan 2024infoVoicecard

"There is one wrong sized hole on the bottom row of holes for the molex connectors. In one of the videos Brian suggests using a dremel tool to grind down the size of the affected pin, which I tried and it was relatively easy and worked well. I suppose you could also drill out the hole, but you would then also drill out the solder pad, and would need to run a wire jumper from the affected pin to one of the vias to make that work."


Facebook Sduck
valid (tick) BOM 1.0.3
1129.Jan.2024infoVoice MOBO

30k resistor bag is labeled with quantity of 32 - in Altium is 24.

24 are required - BOM 1.03 correct, just the bag is wrong Patrick
valid - (tick) 

1229. Jan.2024infoVoice MOBO

100nF caps 20 in bag and labeled with quant. of 20, BOM is quant. of 18 and in Altium

18 required - Bag is wrongPatrick



1329.Jan.2024Important InfoVoice Mobo

dort don´t remove the pcb stripes (from pcb fab - panelized pcb) in in case you use a solder frame. otherwise the traces can be damaged


Patrick
valid (tick) 

1429. Jan 2024improvementVoice Mobo

use 1/4W 0.5W watt 0207 Format resistors for R66/R67 to improve thermal noise

use 1/4W 0.5W watt 0207 Format resistors for R66/R67 to improve thermal noisePatrick



155.feb 2024bugVoice Mobo

U2 wrong silkscreen orientation


install in this way

Patrick
valid (tick) batch 01/2024 from kickstarter
1607.feb 2024Important InfoOutput Board

Install

R7, R11, R37, R41, R48 & R73

 with R7 and R7 with few millimeter distance against the PCB to avoid Thermal Issues

Install

R7, R11, R37, R41, R48 & R73

 with R7 and R7 with few millimeter distance against the PCB to avoid Thermal Issues.

Look in. the Buildguide

Brian

valid (tick) 

Yutube video

and build guide



1707.Feb.2024Important InfoVoice

Since we have to trim the Voices by Trimmers from Top, its not possible for 2 Trimmers when you have installed IC Sockets for A3 (Expo CA3086/CA3046)

Do not install a IC Socket for A1 

in case you still installed a IC Socket, desolder 2 pins of T3 and pull the trimmer out as shown

Patrick

valid (tick) 



1707.Feb.2024Important InfoVoice

Since we have to trim the Voices by Trimmers from Top, its not possible for 2 Trimmers when you have installed IC Sockets for A10

Do not install a IC Socket for A10

in case you still installed a IC Socket, desolder 2 pins of T9 and pull the trimmer out as shown

Patrick

valid (tick) 



1807.Feb.2024Tipall PCBs

do not clean the Styrene Cap with Isopropyl - the Capacitor is glued and can be damaged


 

Patrick

(tick) valid



1907.Feb.2024Tipall PCBs

Do not wash the Trimmers, install the Trimmers and styrene Cap on Voice Card at the end and 

 

Patrick

(tick) valid



2007.Feb.2024TipVoicecard

for better Installation and to avoid a broken capacitor due to mechanical stress bend the pins for C19 and C12

on left original, on right bend style



Patrick

(tick)  valid




Pictures from kickstarter (link) - not for REFERENCE 

    







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