MOTM parts: Difference between revisions

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Latest revision as of 18:35, 15 February 2023

This information is for doing DIY, repaneling, and/or repairs on MOTM systems. It's not comprehensive, everyone has preferences, but lists the common/major/most-wanted parts in the MOTM format, and/or what sort of things will work.

Front panels

Specifications

MOTM panels use U, the 19-inch rack unit for height and width. The height is 5U (8.75"), while the widths are in multiples of 1U (1.75"), with some fraction less to allow for manufacturing tolerances. The finish is baked-on two part Polane paint,^[1] giving it a crinkly look, and with labeling and scales in screen printed epoxy-ink.^[2]

Blank panels

6061 aluminum alloy, T3 or T6 temper, is easy to come by, can be easily worked. Thickness usually ranges between 1.5 mm (0.62") and 2.5 mm (0.12") but see what is standard for the format, e.g. a thickness of 2.28 mm (0.09") for 4U.^[3]^[4]

Blank panels can be purchased from:

Bridechamber 1, 2, 3, and 4U
Synthesis Technology 1 and 2U

Project panels

Panels for specific projects (CGS, I. Fritz, etc.) can be purchased from:

Bridechamber

Custom panels

Custom panels can be manufactured by:

Panels components

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.^[5]

Knobs

MOTM uses ALCO PKES90B1/4 knobs, available at:

Synthesis Technology

Potentiometers

MOTM uses Spectrol 149 pots, available at:

Synthesis Technology

Switches

NKK toggle switches with bat handles are the closest fit.^[6]

SPDT: NKK M2102ES1W01 (Allied: 870-8646)
SPDT center off: NKK M2103ES1W01 (Allied: 870-8647)
DPDT: NKK M2022ES1W01 (Allied: 870-8652)
DPDT center off: NKK M2023ES1W01 (Allied: 870-8653)

Jacks

MOTM uses Switchcraft 112A 1/4" jacks.

LEDs

MOTM uses 5 mm flat-lens LEDs.

Red: Lumex SSI-LXH387ID (DigiKey: 67-1155-ND)
Green: Lumex SSI-LXH387GD (DigiKey: 67-1156-ND)
Yellow: Lumex SSI-LXH387YD (DigiKey: 67-1157-ND)

PCB/Panel mounting

PCB mounting

Most MOTM PCBs are about 4.5" by 5.5".^[7] These are generally mounted perpendicular to the panel with stooge brackets affixed by the pots or jacks, available at:

Internal connectors

Do not mix dissimilar metal terminals and headers. The contact resistance will go up with dissimilar metals, causing all sorts of problems.^[8]

Power

MOTM modules and power distribution boards are connected using 4-pin MTA Connector-156 connectors and 18 awg wire.^[9] Systems by Encore Electronics use 4 pin 0.156" Molex KK connector connectors, while those from Oakley Sound Systems use either MTA or Molex KK 0.156" connectors.

Pin	Voltage
1	+15
2	GND
3	GND
4	-15

Female cable mount: 640426-4 (Mouser: 571-640-4264)
Male PCB mount: 640445-4 (Mouser: 571-6404454)
TE Connectivity 4 pin MTA 156 header (Mouser: 571-6404454)

Interconnections

Oakley Sound Systems designs use either MTA-100 or Molex KK 0.1" for board interconnects.^[10]

References

This page uses Creative Commons Licensed content from Mod Wiggler Wiki:MOTM DIY resources (View authors).

^ Where to get MOTM-style silkscreened panels made?, Mod Wiggler forum, May 2012
^ MOTM Info
^ What type of aluminium is used for faceplates?, Mod Wiggler forum, June 2013
^ Aluminum Panel Guage???
^ Mod Wiggler forum:On cheap parts...
^ Dave Bradley's Parts list and supplier index for typical MOTM hardware
^ MOTM pcb in frac rack format?, Mod Wiggler forum, November 2012
^ Molex Connectors Explained, as used in Pinball.
^ Power distribution – updated, Mod Wiggler forum, Sep 2008
^ Oakley Sound Systems:Construction Guide

The 5U DIY Resource Wiki, Mod Wiggler forum

External links

Dave Bradley's very extensive Parts list and supplier index for typical MOTM hardware.
About Aluminum, McMaster-Carr

DIY builder sites

Richard Brewster's Synthesizer
Bill and Will's MOTM Analog Synthesizer
Modular Synthesis, LLC:Parts and construction information

Schematics, PCB overlays, BOMs and assembly instructions

Stooge brackets

[1] Where to get MOTM-style silkscreened panels made?, Mod Wiggler forum, May 2012

[2] MOTM Info

[3] What type of aluminium is used for faceplates?, Mod Wiggler forum, June 2013

[4] Aluminum Panel Guage???

[5] Mod Wiggler forum:On cheap parts...

[6] Dave Bradley's Parts list and supplier index for typical MOTM hardware

[7] MOTM pcb in frac rack format?, Mod Wiggler forum, November 2012

[8] Molex Connectors Explained, as used in Pinball.

[mw1739-9] Power distribution – updated, Mod Wiggler forum, Sep 2008

[10] Oakley Sound Systems:Construction Guide

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

MOTM parts: Difference between revisions

Latest revision as of 18:35, 15 February 2023

Contents

Front panels

Specifications

Blank panels

Project panels

Custom panels

Panels components

Knobs

Potentiometers

Switches

Jacks

LEDs

PCB/Panel mounting

PCB mounting

Internal connectors

Power

Interconnections

See also

References

External links

DIY builder sites

Schematics, PCB overlays, BOMs and assembly instructions

Stooge brackets

Navigation menu

@@ Line 1: / Line 1: @@
+This information is for doing DIY, repaneling, and/or repairs on [[MOTM]] systems. It's not comprehensive, everyone has preferences, but lists the common/major/most-wanted parts in the MOTM format, and/or what sort of things will work.
-If you have any corrections or additions to this list, feel free to make them here, or send a PM to '''diophantine''' on the MuffWiggler forum.
+== Front panels ==
+[[File:MOTM panel mounting.jpg|thumb|200px|Detail of a MOTM panel mounting.]]
+=== Specifications ===
+MOTM panels use U, the [[19-inch rack]] unit for height and width. The height is 5U (8.75"), while the widths are in multiples of 1U (1.75"), with some fraction less to allow for manufacturing tolerances. The finish is baked-on two part Polane paint,<ref>[https://www.modwiggler.com/forum/viewtopic.php?t=60156 Where to get MOTM-style silkscreened panels made?], Mod Wiggler forum, May 2012</ref> giving it a crinkly look, and with labeling and scales in screen printed epoxy-ink.<ref>[http://synthtech.com/motm/info/ MOTM Info]</ref>
+=== Blank panels ===
-==Panels/Faceplates==
+aluminum alloy, T3 or T6 temper, is easy to come by, can be easily worked. Thickness usually ranges between 1.5&nbsp;mm (0.62") and 2.5&nbsp;mm (0.12") but see what is standard for the format, e.g. a thickness of 2.28&nbsp;mm (0.09") for 4U.<ref>[https://www.modwiggler.com/forum/viewtopic.php?t=86107 What type of aluminium is used for faceplates?], Mod Wiggler forum, June 2013</ref><ref>[https://www.modwiggler.com/forum/viewtopic.php?t=51475 Aluminum Panel Guage???]</ref>
-===MOTM Panels===
-====Panel Specs====
-...
-====Blank Panels====
 Blank panels can be purchased from:
-* Bridechamber: http://bridechamber.com (1, 2, 3, and 4 U)
+* [http://bridechamber.com/ Bridechamber] 1, 2, 3, and 4U
-* Synthesis Technology: http://www.synthtech.com (1 and 2 U)
+* [http://www.synthtech.com/ Synthesis Technology] 1 and 2U
-====Project Panels====
+=== Project panels ===
 Panels for specific projects (CGS, I. Fritz, etc.) can be purchased from:
-* Bridechamber: http://bridechamber.com
+* [http://bridechamber.com/ Bridechamber]
+=== Custom panels ===
-====Custom Panels====
 Custom panels can be manufactured by:
-* The Beast: http://www.thebeast.co.uk/cnc/
+* [http://www.bigbluewave.co.uk/resynthesis/resynthesis_home.htm Re:Synthesis], UK
-* Front Panel Express [US]: http://www.frontpanelexpress.com
+* [http://www.frontpanelexpress.com/ Front Panel Express], USA
-* Schaeffer [EU]: http://www.schaeffer-ag.de
+* [http://www.schaeffer-ag.de/ Schaeffer], EU
-===MU Panels===
+== Panels components ==
+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>Mod Wiggler forum:[https://www.modwiggler.com/forum/viewtopic.php?p=861269 On cheap parts...]</ref>
-====Panel Specs====
+=== Knobs ===
-Details can be found here: http://www.synthesizers.com/technical.html#panels
+MOTM uses ALCO PKES90B1/4 knobs, available at:
+* [http://www.synthtech.com/ Synthesis Technology]
-====Blank Panels====
+=== Potentiometers ===
-Blank panels can be purchased from:
+MOTM uses Spectrol 149 pots, available at:
-* Moon Modular: http://www.lunar-experience.com (1 and 2 U)
-* STG Soundlabs: http://stgsoundlabs.com (1U)
+* [http://www.synthtech.com/ Synthesis Technology]
+=== Switches ===
-* Synthesizers.com: http://www.synthesizers.com (1, 2, 4, and 8 U)
+NKK toggle switches with bat handles are the closest fit.<ref>Dave Bradley's [http://www.hotrodmotm.com/parts_list.htm Parts list and supplier index for typical MOTM hardware]</ref>
+* SPDT: NKK M2102ES1W01 (Allied: 870-8646)
-====Project Panels====
+* SPDT center off: NKK M2103ES1W01 (Allied: 870-8647)
-Panels for specific projects (CGS, YuSynth, etc.) can be purchased from:
+* DPDT: NKK M2022ES1W01 (Allied: 870-8652)
-* Big Blue Wave: http://www.bigbluewave.co.uk
+* DPDT center off: NKK M2023ES1W01 (Allied: 870-8653)
-* Bridechamber: http://bridechamber.com
+=== Jacks ===
-====Custom Panels====
-Custom panels can be manufactured by:
-* Big Blue Wave: http://www.bigbluewave.co.uk
-* Front Panel Express [US]: http://www.frontpanelexpress.com
-* Schaeffer [EU]: http://www.schaeffer-ag.de
-(Note: for FPE/Schaeffer, you need to supply a blank MU panel.)
-==Panels Parts==
-===MOTM Panel Parts===
-A very extensive list can be found here:
-http://www.hotrodmotm.com/parts_list.htm
-====Knobs====
-MOTM uses ALCO PKES90B1/4 knobs.
-Available at:
-* Synthesis Technology: http://www.synthtech.com
-====Pots====
-MOTM uses Spectrol 149 pots.
-Available at:
-* Synthesis Technology: http://www.synthtech.com
-====Switches====
-...
-====Pushbuttons====
-...
-====Jacks====
 MOTM uses Switchcraft 112A 1/4" jacks.
+=== LEDs ===
+MOTM uses 5&nbsp;mm flat-lens LEDs.
+* Red: Lumex SSI-LXH387ID  (DigiKey: 67-1155-ND)
+* Green: Lumex SSI-LXH387GD (DigiKey: 67-1156-ND)
+* Yellow: Lumex SSI-LXH387YD (DigiKey: 67-1157-ND)
+== PCB/Panel mounting ==
-====LEDs====
+=== PCB mounting ===
-...
+Most MOTM PCBs are about 4.5" by 5.5".<ref>[https://www.modwiggler.com/forum/viewtopic.php?t=71563 MOTM pcb in frac rack format?], Mod Wiggler forum, November 2012</ref> These are generally mounted perpendicular to the panel with [[stooge brackets]] affixed by the pots or jacks, available at:
+* [http://bridechamber.com/Brackets.html Bridechamber]
-===MU Panel Parts===
+* [https://web.archive.org/web/20180228193533/http://synthcube.com/cart/index.php?route=product%2Fsearch Synthcube]
-====Knobs====
-Dotcom uses fluted dual-dot 1" Moog-style knobs.
-Available at:
-* Small Bear: http://www.smallbearelec.com/Detail.bok?no=739
-* Synthesizers.com: http://www.synthesizers.com/cabinets.html#parts
-For pointer knobs, Dotcom uses 1.125" Moog-style pointer knobs.
-Available at:
-* Small Bear: http://www.smallbearelec.com/Detail.bok?no=1109
-* Synthesizers.com: http://www.synthesizers.com/cabinets.html#parts
-====Pots====
-Synthesizers.com uses Alpha single-gang 24mm pots.
-Available at:
-* Small Bear Electronics: http://www.smallbearelec.com/Detail.bok?no=9
-* Synthesizers.com: http://www.synthesizers.com/cabinets.html#parts (100K, 1M)
-====Switches====
-Available at:
-* Synthesizers.com: http://www.synthesizers.com/cabinets.html#parts (DPDT, SPDT)
-====Pushbuttons====
-Available at:
-* Synthesizers.com: http://www.synthesizers.com/cabinets.html#parts
-====Jacks====
-Dotcom modules use enclosed Switchcraft-style jacks.
-Available at:
-* Small Bear Electronics: http://www.smallbearelec.com/Detail.bok?no=90
-* Synthesizers.com: http://www.synthesizers.com/cabinets.html#parts
-Of course, other open-frame 1/4 jacks can be used (and are used by 3rd party manufacturers), and are especially handy for normalizing jack connections.
-====LEDs====
-...
-'''Note''': Panel components sold by Synthesizers.com come with 6" wires and MTA connected.
-==PCB/Panel Mounting==
-===MOTM PCB Mounting===
-====PCB Mounting Brackets====
-MOTM PCBs are generally mounted perpendicular to the panel with L-shaped brackets affixed to pots or jacks.
-Available at:
-* Bridechamber: http://bridechamber.com/Brackets.html
-* Synthesis Technology: http://www.synthtech.com (Stooge brackets)
-Details on Stooge brackets: http://www.wiseguysynth.com/larry/brackets/modular_brackets.htm
-===MU PCB Mounting===
-Synthesizers.com and some 3rd party manufacturers mount the PCB parallel to the panel with standoffs.  Other 3rd party manufacturers mount PCBs perpendicular MOTM-style.  #4-40 mounting hardware is ideal, and works with CGS boards too.
-PCBs can be mounted parallel using 1" (Mouser: 534-8405) and 1.25" (Mouser: 534-8407) threaded standoff posts.
-Black oxide screws, like the ones used by Synthesizers.com, are used to affix the standoffs to the front panel.  Specifically, #4-40 x 3/8" Black oxide phillips pan head screws. <ref>http://guitarfool.com/modules/hardware.html</ref>
-Screws available here:
-http://www.aaronsmachinescrews.com/cfusion/DisplayProduct.cfm?ITEM=1701SN1368
-For perpendicular mounting, brackets as mentioned in the MOTM section can be used, or threaded right-angle brackets (Mouser: 534-621) can be mounted to the panel, using the same screws mentioned above. <ref>http://guitarfool.com/modules/hardware.html</ref>
-==Internal Connectors==
-===MOTM Connectors===
-====Module Power====
--pin MTA-156 connectors
-Pinout:
-* 1 = +15V
-* 2 = GND
-* 3 = GND
-* 4 = -15V
-===MU Connectors===
-====Module Power====
-Dotcom modules and power supplies are connected using 6-pin keyed MTA-100 connectors. <ref>http://www.synthesizers.com/technical.html#internaldc</ref>
-Pinout:
-* 1 = +15v (White)
-* 2 = KEY - pin missing and plugged
-* 3 = +5v (Red)
-* 4 = gnd (Black)
-* 5 = -15v (Green)
-Female 24AWG cable mount: AMP #6404416 (Mouser: 571-3-640441-6)
-Male PCB mount: AMP #6404566 (Mouser: 571-6404566)
-====Panel Connectors====
--pin MTA-100 connectors are used for jacks, push-buttons, and LEDs.
-Jack Pinout:
-* 1 = Signal (tip)
-* 2 = Ground (ring)
-Female cable mount: AMP #6404412 (Mouser: 571-3-640441-2)
-Male PCB mount: AMP #6404562 (Mouser: 571-6404562)
--pin MTA-100 connectors are used for switches and pots.<ref>http://www.synthesizers.com/technical.html#internalpot</ref>
-Potentiometer Pinout:
-* 1 = CCW Side
-* 2 = Wiper
-* 3 = CW Side
-Female cable mount: AMP #6404413 (Mouser: 571-3-640441-3)
-Male PCB mount: AMP #6404563 (Mouser: 571-6404563)
-MTA-100 connectors with more pins can be found with similar part numbers.
+== Internal connectors ==
-====Additional Details====
+Do not mix dissimilar metal terminals and headers. The contact resistance will go up with dissimilar metals, causing all sorts of problems.<ref>[http://www.pinrepair.com/connect/ Molex Connectors Explained, as used in Pinball.]</ref>
-MTA-100 connectors use 24 awg wire.
+<!-- The Molex KK crimp connector is used in synthesizers by [[CGS]], [[Cyndustries]], [[EFM]], [[Encore Electronics]], [[Metalbox]], [[Oakley Sound Systems]] and [[Synthesis Technology]].<ref>[http://search.retrosynth.com/synth-diy/search/lookit.cgi?-v0503.816 Re: &#91;sdiy&#93; Blacet/Paia power header part number?] by Cynthia Webster, 21 Mar 2005</ref>--><!-- [[Connectors#5U]]-->===Power===
+MOTM modules and power distribution boards are connected using 4-pin [[MTA Connector]]-156 connectors and 18 awg wire.<ref name="mw1739">[https://www.modwiggler.com/forum/viewtopic.php?t=1739 Power distribution – updated], Mod Wiggler forum, Sep 2008</ref> Systems by [[Encore Electronics]] use 4 pin 0.156" [[Molex KK connector]] connectors, while those from [[Oakley Sound Systems]] use either MTA or Molex KK 0.156" connectors.
+{| class="wikitable"
+!Pin!!Voltage
+|-
+|1||+15
+|-
+|2||GND
+|-
+|3||GND
+|-
+|4||-15
+|}
+* Female cable mount: 640426-4 (Mouser: 571-640-4264)
+* Male PCB mount: 640445-4 (Mouser: 571-6404454)
+* [https://www.mouser.co.uk/ProductDetail/TE-Connectivity/644752-4?qs=ZDXmSm13591UQpdE9ubGWQ%3D%3D#.Wuyw9VR2OCE TE Connectivity 4 pin MTA 156 header] (Mouser: 571-6404454)
+=== Interconnections ===
-MTA-100 "T"-handle tool: AMP #59803-1 (DigiKey: A9982-ND)
+Oakley Sound Systems designs use either MTA-100 or Molex KK 0.1" for board interconnects.<ref>Oakley Sound Systems:[http://www.oakleysound.com/construct.pdf Construction Guide]</ref>
-==Additional Resources==
+== See also ==
+* [[MU parts]]
-===Online resources===
+== References ==
+{{From Mod Wiggler Wiki|MOTM DIY resources}}
-DIY builder sites:
+{{reflist}}
-* http://pugix.com/synth/ (MOTM)
+* [https://www.modwiggler.com/forum/viewtopic.php?t=36380&start=all&postdays=0&postorder=asc The 5U DIY Resource Wiki], Mod Wiggler forum
-* http://guitarfool.com/modules/index.html (MU)
+== External links ==
-===Muffwiggler threads===
+* Dave Bradley's very extensive [http://www.hotrodmotm.com/parts_list.htm Parts list and supplier index for typical MOTM hardware].
-... To Be Compiled ...
+* [http://www.mcmaster.com/#standard-aluminum-sheets/=xe70s0 About Aluminum], McMaster-Carr
+=== DIY builder sites ===
+* [http://pugix.com/synth/ Richard Brewster's Synthesizer]
+* [http://www.dragonflyalley.com/billAndWillMOTMSynth.htm Bill and Will's MOTM Analog Synthesizer]
+* Modular Synthesis, LLC:[http://modularsynthesis.com/modules/parts/parts.htm Parts and construction information]
+=== Schematics, PCB overlays, BOMs and assembly instructions ===
+* [http://yusynth.net/index_en.php YuSynth]
+* [https://web.archive.org/web/20060111050127/http://www.musicfromouterspace.com/ Music From Outer Space]
+* [https://web.archive.org/web/20170430151727/http://cgs.synth.net/ CGS]
+=== Stooge brackets ===
-==Notes==
+* [https://web.archive.org/web/20101022002423/http://www.wiseguysynth.com/larry/brackets/modular_brackets.htm PCB mounting brackets]
-* I'm not wanting to do a list of every possible panel part or knob (everyone has preferences), but to list the common/major/most-wanted parts in these formats, and/or what sort of things will work.  I'd love to eventually list the sizes and have templates/sizes for panel design too.
+* [http://www.synthtech.com/tech.html Detailed CAD drawings of MOTM parts/brackets].
+[[Category:MOTM]]
-==References==
+[[Category:Resources]]
-<references/>
+[[Category:Components]]
+[[Category:Front panels]]

MOTM parts: Difference between revisions

Latest revision as of 18:35, 15 February 2023

Front panels

Specifications

Blank panels

Project panels

Custom panels

Panels components

Knobs

Potentiometers

Switches

Jacks

LEDs

PCB/Panel mounting

PCB mounting

Internal connectors

Power

Interconnections

See also

References

External links

DIY builder sites

Schematics, PCB overlays, BOMs and assembly instructions

Stooge brackets

Navigation menu

Search