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This information is for doing DIY, repanelingre-paneling, and/or repairs on [[Eurorack|Euro systems]]. It's not comprehensive, everyone has preferences, but lists the common, major or most-wanted parts in the Eurorack format, and/or what sort of things will work.
== Front panels ==
== Front panels parts ==
{{split_to|[[Eurorack DIY panel parts]]|22 April 2016}}
''The lists in this section need checking and tidying up.''
Avoid cheap parts, especially if mechanical. Invest in quality, you always get what you pay for. Otherwise your entire system might later develop intermittent faults.<ref>[http://www.muffwiggler.com/forum/viewtopic.php?p=861269 On cheap parts...], Muff Wiggler forum, July 2012</ref><ref>[http://www.muffwiggler.com/forum/viewtopic.php?t=108045&start=all&postdays=0&postorder=asc The Pitfalls of Choosing Quality Brands of Components?], Muff Wiggler forum, March 2014</ref> Vertical mount front panel components will need to of a similar height to neatly fit the gap between the PCB and front panel.
In order to construct low profile Eurorack modules '''vertical mount components''' are required. These allow the [[PCB]] to be mounted parallel to the front panel, keeping module depth to a minimum.<ref name="erthenvar">[http://erthenvar.com/store/accessories/3.5mm-vertical-mount-jacks 3.5mm Vertical Mount Jacks], Erthenvar</ref>
=== 3.5mm jack sockets ===
These are '''not''' 1/8 inch but are 3.5mm.<ref name="techqs">[http://www.muffwiggler.com/forum/viewtopic.php?t=33821&start=all&postdays=0&postorder=asc Some Eurorack technical questions], Muff Wiggler forum, April 2011</ref> Popular brands of vertical mount 3.5mm mono jacks for Eurorack are Cliff (used by [[Doepfer]]), Erthenvar aka Flight of Harmony, Kobiconn (used by [[Cwejman]], [[Make Noise]], [[Malekko]] and [[Metasonix]]) and Switchcraft. These are available switched (for [[normalisation]]) and unswitched.<ref name="planb">[http://www.muffwiggler.com/forum/viewtopic.php?t=1750&start=all&postorder=asc Plan B/Cliff Jacks], Muff Wiggler forum, September 2008</ref><ref>[http://www.muffwiggler.com/forum/viewtopic.php?t=96727&start=all&postdays=0&postorder=asc Have I bought the wrong jacks for eurorack?], Muff Wiggler forum, November 2013</ref> Erthenvar 3.5mm vertical mount jacks with a thread diameter about 5.9mm (0.232"), will fit well with panel drill holes of 6.0 to 6.5mm diameter.<ref name="erthenvar"/><ref name="msx">[http://www.modularsquare.com/Metasonix-R54-s868.htm Metasonix R54]</ref><ref>[http://www.muffwiggler.com/forum/viewtopic.php?t=73406&start=all&postdays=0&postorder=asc Erthenvar 3.5mm Vertical Mount Jacks], Muff Wiggler forum, December 2012</ref>
Suppliers:
==== Cliff horizontal PCB mount ====
* Newark:[http://canada.newark.com/cliff-electronic-components/cl1384/connector-stereo-jack-pcb/dp/36X2438?ost=cl1384 3.5mm mono PCB jack socket]
* Rapid:[http://www.rapidonline.com/Cables-Connectors/3-5mm-Mono-PCB-jack-socket-63491 3.5mm mono PCB jack socket]
==== Vertical PCB mount ====
[[File:PistonHondaInternals.jpg|thumb|200px|Vertical mounted potentiometer and two hacked to fit Kobiconn 16PJ138 panel mounting jack sockets in the [[Harvestman Piston Honda]].]]
Vertical mount 3.5 mm jack sockets are hard to find. Options include:
* [http://www.cliffuk.co.uk/products/jacksockets/js2535.htm Cliff], used by [[Doepfer]]
* Erthenvar [http://erthenvar.com/store/accessories/3.5mm-vertical-mount-jacks 3.5mm vertical mount jacks], switched
* [http://www.jalco.co.jp/eng/products/jack/miniature_jack.html Jalco YK21-5157] and variations. 10.5mm high versions and in mono, unthreaded bush
* Mouser:[http://uk.mouser.com/Search/ProductDetail.aspx?R=16PJ138 Kobiconn 16PJ138]
* Farnell:[http://uk.farnell.com/lumberg/1502-03/socket-3-5mm-jack-chassis/dp/1270966 Lumberg 1502 03] looks like a wired chassis socket with solder tags, it also has a PCB template
* QingPu, available from [http://www.thonk.co.uk/product-category/diy-accessories/jacks/ Thonk]:
** [http://www.qingpu-electronics.com/en/products/WQP-PJ3410-54.html WQP-PJ3410], plastic bush
** [http://www.qingpu-electronics.com/en/products/WQP-PJ3010BM-34.html WQP-PJ3010BM], metal bush model with two ground lugs. PCB to panel gaps of 9.0 to 12.0 mm look feasible, with the lower values achieved by bending the four feet diagonally or at 90 degrees.
** [http://www.qingpu-electronics.com/en/products/WQP-PJ301M-12-306.html WQP-PJ301M-12], an alternative to Kobiconn 16PJ138, all PCB mount pins, with the reliable beryllium copper spring
* Rapid:[http://www.rapidonline.com/cables-connectors/3-5mm-unswitched-stereo-vertical-jack-socket-20-1655 TruConnect PJ-360], stereo, unthreaded bush
==== Wired/panel mount ====
* Mouser:[http://uk.mouser.com/ProductDetail/Kobiconn/16PJ138/?qs=sGAEpiMZZMv0W4pxf2HiV6YU8TCM0qP%252bVS23qqYdSEM%3d Kobiconn 16PJ138], mono 3.5mm, switched
=== Potentiometers and controllers ===<!-- check this section for accuracy -->
[[File:WMDInternals.jpg|200px|thumb|right|Vertical mount potentiometers in the [[WMD Gamma Wave Source]]. The green one is a BI Technologies P0915N.]]
==== Horizontal PCB mount ====
* Mouser:[http://www.mouser.com/Search/Refine.aspx?Keyword=311-1902F 311-1902F]
* SmallBear:[http://smallbear-electronics.mybigcommerce.com/pc-mount-right-angle-3/ PC Mount Right-Angle potentiometers]
* SmallBear SKU 1012A<!-- link? -->
* Tayda SKU A-1847<!-- link? -->
==== Vertical PCB mount ====
* Thonk:[http://www.thonk.co.uk/shop/alpha-9mm-pots/ Alpha 9mm Pots]
* Mouser:[http://uk.mouser.com/Search/Refine.aspx?Keyword=rk12l Alpha RK12L] types
* Mouser:[http://nl.mouser.com/ProductDetail/BI-Technologies/P0915N-EC15BR100K/?qs=sGAEpiMZZMuarXojuOTscyIaXMp8bhnndlJQJbDaOdU%3d BI Technologies 10.5mm high linear pots]
* [http://www.bourns.com/ProductFamily.aspx?name=potentiometers Bourns]:
** PDB12-M, PCB mount, 9mm high, no thread, 12mm package
** PTV09A-4
** Farnell:[http://uk.farnell.com/bourns/3310-001-503l/potentiometer-50k/dp/9354000 3310Y series], 5mm deep with 6mm of thread so may be too low to be used easily
** PTV111-3 7.5 mm high body with 5.0 mm high bushing, available with centre detent
** Digital continuous encoders for microcontroller based products
* Vishay:
** P12 series 11mm to panel
** [http://www.vishay.com/docs/51047/p9.pdf P9] vertical mount 7mm high with 7mm bushing, only up to 10V
=== Switches ===<!-- This needs tidying up. -->
==== Wired/panel mount ====
* SmallBear SKU 0221C1
* Jameco 317236
** 0.55" 136241
** 19.8mm 264990
** 33.3mm 264946
* Mouser 633-M201901-RO
** SP3T toggle switch 633-M202402-RO
** 633-FB15ANEP2<ref name="build">[https://www.muffwiggler.com/forum/viewtopic.php?t=47067&postdays=0&postorder=desc&start=475&sid=225da015fa78dc8d1229c945333e8443 BUILD - CGS Euro Modules], Muff Wiggler forum, November 2011</ref>
=== LEDs ===
==== Wired/panel mount ====
* Mouser 3mm LED 593-2000C (C stands for clear)<ref name="build"/>
== PCB dimensions and mounting ==
These days Eurorack modules tend to mount the PCB parralel to the front panel, held in place by the pots, jacks and switches.<ref name="six">[http://www.muffwiggler.com/forum/viewtopic.php?t=123605 Six jacks in euro, what is the preferred configuration?], Muff Wiggler forum</ref> Modules with wired front panel components cost more to manufacture than PCB mounted, however these electro-mechanical components have limited lifetimes and while PCB mounted parts can be repaired it's not as easily as wired components. Also PCB mounted components mean the board is designed around specific parts. If any of these parts goes out of production the modules have to be redesigned, with the additional cost of updating the PCBs.<ref name="planb">[http://www.muffwiggler.com/forum/viewtopic.php?t=1750 Plan B/Cliff Jacks], Muff Wiggler forum, September 2008</ref>
The vertical distance between the mounting holes on Eurorack rails is 122.5mm apart (4.823"). Based on the manufacturer's drawings for the most common rails used in Euro cases, the clear space between pairs of rails is:
Those don't include the tolerances (slop) of the nut in the rail moving up and down and the screw hole in the front panel. These can cause the rails to be closer or further apart when any given module is tightened in. It's better to try to give a little more clearance and not count on these exact figures.<ref name="six" />
To fit between the mounting rails the maximum vertical PCB size can be from 108mm (4.25") to 110mm. The width of the PCB needs to be a touch less than that of the front panel, whilst allowing for clearance and taking tolerances into consideration.<ref name="hinton" /><ref name="six" /><ref name="erthenvar">[http://erthenvar.com/store/accessories/3.5mm-vertical-mount-jacks 3.5mm Vertical Mount Jacks], Erthenvar</ref>
=== Stacked PCBs ===
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