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Project

Projecttitel: RSF KOBOL Clone

Status: FINISHED

Startdate: 01/2019

Duedate: 02/2020

Manufacture link: deliandiver.com 

https://www.muffwiggler.com/forum/viewtopic.php?t=203509&highlight=

Summary:

works, but its not for beginners and until the developer do not change the PSU from Main AC to Walwart psu its definitely not for beginners.

you need 2x SSM2050 or use 2055/2056 with a mod.



Sync sounds:





ISSUES

Nr.DescriptionPriority
Solution
1Switches - use other pcbs footprint size and/or change panel to toggle switch1

2BOM : LOG for Volume LFO and VP out gain3
fixed
3missing mounting holes for pcbs2
open
4LED driver needed for gate led2
fixed
5leds polarity on pcb3
fixed ?
6LFO speed inverted pot, left is fast on the prototype1Or use reveresed Potifixed
7panel holes too big for potis1
open
8powersupply design not allowed -2
open - use a own PSU - Yamaha PA30 and resctifier, capactitors
9markers for voltage test points missing3
open
10more clearly infos about matched trannys and resistors3

11envelope change too CEM3310 or digital1
open
12capacitors are too close next to the power supply section on mainboard1
fixed
13use bigger traces1


open
14Gate signal bleed in LFO1Blockerfixed
15V/oct unstable - waveforms wobbling -1Blockerfixed
16Lfo led not working3
fixed
17Holes in vcf board and VCO board to mount on metal spacers - for better mounting2
open
18Case doesn't fit with the panel1
workaround possible
19ua7261
use normal matched pair trannys
20ssm20401
use the new SSI 2040 !!






BOM: 11-2020


rsf-kobol.xlsx


wiring panel 11-2020

Project schematics RSF Kobol Expander I Clone.pdf



changes:  

Pour R135 ---> 68pF

Pour R207 ---> 22nF


Switches

braucht:  1x 2 reihig mit 3 pins (ON/OFF) power



mouserRS
power

SSSU022800


4x normal

SSSU015100



oder:


mouserordered (tick)
power

MHS222K nicht lieferbar

06-MHS22204

https://www.kynix.com/Detail/176774/MHS222K.html
4x normal

MHS122K

apem

home stock






Nr




Potis

50€

buchsen

30€

widerstände

20€

capacitors2,2MFreichelt3,40€

ICS 3080, lm324, lmxxx



trannys, regler

5

dioden

1

schalter mouser



kabel








Schematics:

ob_345da9_schemas-carte-kobol-expander-1.pdf


  File Modified
PNG File kobold-crazy-patroche.png Dec 13, 2018 by LED-man
JPEG File fullsizeoutput_6010.jpeg Dec 14, 2018 by LED-man
JPEG File fullsizeoutput_601c.jpeg Dec 14, 2018 by LED-man
JPEG File fullsizeoutput_6002.jpeg Dec 14, 2018 by LED-man
JPEG File IMG_4167.JPG Dec 14, 2018 by LED-man
JPEG File IMG_4128.JPG Dec 14, 2018 by LED-man
JPEG File IMG_4127.JPG Dec 14, 2018 by LED-man
JPEG File IMG_4124.JPG Dec 14, 2018 by LED-man
JPEG File IMG_4109.JPG Dec 14, 2018 by LED-man
JPEG File IMG_4041.JPG Dec 14, 2018 by LED-man
PDF File ob_044dfc_schemas-embase-et-sous-embase-expande.pdf Dec 14, 2018 by LED-man
PDF File ob_5c5879_pcb-noise-lfo-avec-valeur-des-composan.pdf Dec 14, 2018 by LED-man
JPEG File ob_cbd009_carte-lfo-noise-103-x-41.jpg Dec 14, 2018 by LED-man
PDF File ob_97745d_pcb-recto-verso.pdf Dec 14, 2018 by LED-man
PDF File ob_c907a4_carte-vco-avec-valeur-composants.pdf Dec 14, 2018 by LED-man
PDF File ob_00250d_carte-vco-avec-numero-des-composants.pdf Dec 14, 2018 by LED-man
JPEG File ob_52885e_photo-pcb-arriere-169-x-116.jpg Dec 14, 2018 by LED-man
JPEG File ob_78c71f_img025.jpg Dec 14, 2018 by LED-man
PDF File pcb-traces.pdf Dec 14, 2018 by LED-man
PDF File panel-parts.pdf Dec 14, 2018 by LED-man
JPEG File ob_75af04_photo-pcb-panel-avant-423-x-123.jpg Dec 14, 2018 by LED-man
JPEG File kobol-inside.jpg Dec 14, 2018 by LED-man
PDF File kobol-panel.pdf Dec 14, 2018 by LED-man
JPEG File 7hgNXffDTWSGkh3BAhVQEA.jpg Feb 03, 2020 by LED-man
JPEG File gJtar6PaTbOlUP5un4eAGA.jpg Feb 03, 2020 by LED-man
JPEG File DKYnDwq4Qn6UsgnZXNMdGA.jpg Feb 03, 2020 by LED-man
JPEG File btqqy%owSCC3vztiLgzTnA.jpg Feb 03, 2020 by LED-man
JPEG File bts%PM7GSIysWGkNpXCYWQ.jpg Feb 03, 2020 by LED-man
JPEG File OYINPgdtRK26FKriqG4GrQ.jpg Feb 03, 2020 by LED-man
JPEG File JuLhfmKKQJ2gV51sNMP4jQ.jpg Feb 03, 2020 by LED-man
JPEG File 5048003E-0547-42C7-BC3E-823B4239BA12.jpg Feb 03, 2020 by LED-man
Microsoft Excel Spreadsheet rsf-kobol.xlsx Dec 02, 2020 by LED-man
PDF File Project schematics RSF Kobol Expander I Clone.pdf Dec 02, 2020 by LED-man
PDF File ob_345da9_schemas-carte-kobol-expander-1.pdf Sep 03, 2021 by LED-man


Final Pictures: