I made some power cable format converters tonight

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JohnLRice

I made some power cable format converters tonight

Post by JohnLRice » Sat May 08, 2010 2:33 am

EDIT December 2018: I changed the title of the thread. It used to be about making DotCom to MOTM cables but there are several different formats discussed now so the title didn't make sense anymore.

Since I'm lazy, I bought one of these DotCom QDH20 power harnesses:
http://www.synthesizers.com/q101.html

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And I also bought a bunch of these CONN RECEPT 6POS 24AWG MTA156 connectors:
http://search.digikey.com/scripts/DkSea ... =A31244-ND

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I cut off each DotCom power cable from the harness and put a MTA156 connector on the end. Keep in mind normal sized MOTM power connectors probably wont work well since they are for 18 gauge wire.

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Now I can plug my DotCom (and Moon, STG, COTK, etc) modules into my Synth Tech MOTM distro boards.
Last edited by JohnLRice on Thu Dec 20, 2018 12:44 am, edited 2 times in total.

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dude
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Post by dude » Sat May 08, 2010 2:37 am

that solves that problem! nice.

sandyb

Post by sandyb » Sat May 08, 2010 2:56 am

good stuff john.
i'm going to sticky this.

sandy

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bwhittington
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Post by bwhittington » Sat May 08, 2010 9:10 am

It seems worth pointing out that you can do the same thing working the other way, wiring an MOTM connector to a Dotcom harness to power MOTM modules with a Dotcom power supply. The negative is the nest of wires that is the Dotcom harness. The positive is a more robust amperage and the inclusion of a +5v rail.

Cheers,
Brian

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Post by scarymcclary » Sat May 08, 2010 9:58 pm

this shall come in handy.

JohnLRice

Post by JohnLRice » Mon May 24, 2010 2:50 am

Hey, I swear I didn't copy him but check out fantastic Dave Brown's wiring diagram on how to make these cables! :yay:

http://www.modularsynthesis.com/moonmod ... 0cable.pdf

JohnLRice

Post by JohnLRice » Sat Jul 10, 2010 4:03 am

I was making a few more of these cables tonight and since my camera was in reach I thought I would make a clear picture of how the MOTM end gets wired:

Image

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Post by Luka » Sat Jul 10, 2010 5:02 am

thats the dotcom end though isnt it

JohnLRice

Post by JohnLRice » Sat Jul 10, 2010 5:15 am

Luka wrote:thats the dotcom end though isnt it
Nope! :razz: :mrgreen: It is a MTA .156 connector that plugs into a MOTM distro board. The cable (and connector at the other end) were cut off of a Synthesizers.com DC Power Harness.

I'm using these cables to power modules, that have DotCom (MTA .100) power headers, from my DIY MOTM style power supplies.

JohnLRice

Post by JohnLRice » Fri Jul 23, 2010 7:08 pm

Made a big batch last night:
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I also needed a couple with 4 pin MOTM connectors (for modules that don't use +5v because I was out of 6 pin header positions on the distro!):
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And here is one frankenstien adapter so I could connect a COTK module with a 14 pin power connector to a MOTM 4 pin power header!:
Image

Here they are in use:
Image

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decaying.sine
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Post by decaying.sine » Fri Jul 23, 2010 7:57 pm

Great work John. You always have nice and clean looking DIY builds!
Brian
"I must create a system or be enslaved by another mans; I will not reason and compare: my business is to create." William Blake

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JohnLRice

Post by JohnLRice » Fri Jul 23, 2010 9:50 pm

decaying.sine wrote:Great work John. You always have nice and clean looking DIY builds!
Thanks Brian. :hail:

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Post by Entrainer » Mon Oct 04, 2010 12:48 pm

How to you use the T-Handle to get the wire in?
I ordered everything I needed, thanks to the
great information here.

But now I'm trying to figure it out...

Do you have to cut through the insulation first
before inserting?

Do you press the wires in one at a time?

EDIT:

I got power! Still don't know if I'm using the
insert tool correctly. Modcan's look a lot neater.
I just forced the wire in one at a time and took
a chance powering up. My first "DIY" :lol:

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Post by russma » Mon Oct 04, 2010 2:38 pm

Image

JohnLRice

Post by JohnLRice » Mon Oct 04, 2010 9:50 pm

Yeah, do one wire at a time. No stripping needed, the connector pins cut through the insulation.

Interesting to note: if you are doing MTA 0.100 (DotCom) connectors, the insersion tool will work orientated both ways, BUT, for MTA 0.156 (MOTM/MODCAN) the insertion tool only works one way! I'll often gently stick the tool in a hole without a wire to make sure I have it right when doing 0.156 connectores.

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Post by Entrainer » Tue Oct 05, 2010 2:58 am

Cool, thanks Idiotboy and JLR.

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Post by rico loverde » Wed Nov 10, 2010 10:16 pm

hey guys i thought this would probably be the best place to ask. so i need to straighten out my power supply issues. right now I have a sythnesizer.com entry system using the supply it came with (Q137) and a MOTM650 (using the 950 board) running off of it

then I have my DIY stuff, mostly MFOS and Bridechamber stuff and I have 2 MFOS wall wart power supplies running those. Its not the prettiest supply but it is safe and works well.

Ultimately what Id like to do is run my DIY stuff off the synth.com supply since I have a butt load of open power cables left. Whats the best way to go about this. It seems like all the modules in the diy world use those big 4 pin headers, and the synth.com and MOTm are 6

thanx guys, thought id play it safe and ask the experts!!!
works for Darkplace Manufacturing

sandyb

Post by sandyb » Thu Nov 11, 2010 2:33 am

rico loverde

read this thread :)
viewtopic.php?t=1739

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rico loverde
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Post by rico loverde » Thu Nov 11, 2010 2:43 am

thanx sandyb
works for Darkplace Manufacturing

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Post by sonicwarrior » Thu Jul 05, 2012 1:35 pm

Btw. for the Europeans: AWG24 is like 0.25 mm² wire. But you may want to choose one with a bigger insulation.
0.5 mm² is too big.
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Post by frokka » Wed Nov 28, 2012 12:10 pm

Are these cables for sale?
- and do you have any 4pin to 3pin cables as well?

JohnLRice

Post by JohnLRice » Wed Nov 28, 2012 9:59 pm

frokka wrote:Are these cables for sale?
- and do you have any 4pin to 3pin cables as well?
Hi frokka and welcome to Muff's! :party:

I've only made these for my own use and don't sell them to other people. If i wasn't so far behind on everything I'd consider making a batch to sell but . . . :ripbanana:

Maybe someone like Krisp1 in the UK might be interested in making some of thise? He doesn't currently make them but he does make standard MOTM power cables.
http://www.krisp1.com/store/index.php?m ... ucts_id=31

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Post by krisp14u » Thu Nov 29, 2012 5:04 am

JohnLRice wrote:Maybe someone like Krisp1 in the UK might be interested in making some of thise? He doesn't currently make them but he does make standard MOTM power cables.
http://www.krisp1.com/store/index.php?m ... ucts_id=31
Send me a PM
I have made a cable for just about every Power to module combination there is
Cheers :guinness:

Paul
www.krisp1.com/store/
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Custom solution

Post by LED-man » Mon Mar 25, 2013 10:12 am

Here is a Custom Solution..

30 dotcom conenctors
2 MOTM Connectors
modular connection allows to add more connectors like COTK, curetronics etc.
This Solution was build be me.
Please contact me if you want this or a silimilar Solution.


Image

Image

More Pics here
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TTSH Support Page and other DIY Projects:
https://www.DSL-man.de

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Re: Custom solution

Post by fyvewytches » Mon Apr 08, 2013 4:22 am

LED-man wrote:Here is a Custom Solution..

30 dotcom conenctors
2 MOTM Connectors
modular connection allows to add more connectors like COTK, curetronics etc.
This Solution was build be me.
Please contact me if you want this or a silimilar Solution.
... and it works perfectly !! (well, no smoke yet :hihi: )

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