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funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
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 Posted: Fri Jul 11, 2008 1:50 pm Post subject:
Building the Thomas Henry MPS |
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Hi,
(first, collecting parts...)
three LM13700 are required for IC1-3.
NJM#13700D can be a good cheap substitute ?
it says DIP-16, @mouser. |
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Uncle Krunkus
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Joined: Jul 11, 2005
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Location: Sydney, Australia
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| Posted: Fri Jul 11, 2008 6:03 pm Post subject:
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Yep, should be fine.
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What makes a space ours, is what we put there, and what we do there. |
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funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
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| Posted: Fri Jul 11, 2008 7:09 pm Post subject:
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thanks.
was not sure, because it's so cheap  |
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tommi
Joined: Dec 05, 2007
Posts: 247
Location: Italy
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funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
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State Machine
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Joined: Apr 17, 2006
Posts: 2812
Location: New York
Audio files: 25
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| Posted: Sun Jul 20, 2008 7:35 am Post subject:
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| Quote: | | I was asking myself what kind of board you're going to use for this project. |
It looks like Futurlec has plenty of prototype boards you could use for the MPS ........
I know that Uncle Krunkus uses the strip board method quite a bit and I prefer wire wrap and component headers but both techniques should serve you well.
Here is the link to the boards that Futurlec sells:
http://www.futurlec.com/ProtoBoards.shtml
Bill |
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Danno Gee Ray
Joined: Sep 25, 2005
Posts: 1351
Location: Telford, PA USA
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| Posted: Sun Jul 20, 2008 8:01 am Post subject:
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| Seems the grape is turning raisin...drying up on the vine. |
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tommi
Joined: Dec 05, 2007
Posts: 247
Location: Italy
Audio files: 3
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| Posted: Sun Jul 20, 2008 3:22 pm Post subject:
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I think I'd use a stripboard, I hope that a 100x75mm is big enough, considering that I already have built the case that will host 2x MPS and 2x Midi to CV circuits. 100x100 cm could be okay but bigger than that could be a problem for the space I 've got inside the case... to be honest I'm still hoping one day the MPS PCBs will be available, so that building it will be much easier 
funkyfarm, I tried to follow your link | Quote: | | http://electro-music.com/catalog/forums.html/cPath/54 |
but it brings to an error page
state machine, thanks for the link, that kind of protoboard could be very useful! I know futurlec also have to sell the xr2206 !
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State Machine
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| Posted: Sun Jul 20, 2008 4:20 pm Post subject:
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| Quote: | | I think I'd use a stripboard, I hope that a 100x75mm is big enough, considering that I already have built the case that will host 2x MPS and 2x Midi to CV circuits. 100x100 cm could be okay but bigger than that could be a problem for the space I 've got inside the case... to be honest I'm still hoping one day the MPS PCBs will be available, so that building it will be much easier |
Yes, the strip boards come out very nice. Nothing is critical in the layout of the MPS so doing it this way should be no problem other than more work for you, especially two MPS stripboards 
It seems from my perspective, I would not hold my breath for boards. The project really went public on Scott's site so anyone can build it or even try their hand at making their own PC board. So, it's open source except for profit of course. No plans seem to exist from my point of view. I don't want to sound negative though so maybe there is a chance for manufactured PC boards and there is a master plan in the works behind the scenes
Danno wrote:
| Quote: | | Seems the grape is turning raisin...drying up on the vine. |
Well yes Dan, maybe from an availability perspective. Scott and Thomas' write ups on Scott's website are quite good and if one were really ambitious, you could do what Tommy is doing and stripboard or protoboard it.  Maybe even put two instances of the MPS on the same project board.  Perhaps that would even be more rewarding than slapping components into a ready made PC board to which there really is no challenge there, just speed. Hope all is well there Danno
Bill |
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Uncle Krunkus
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Joined: Jul 11, 2005
Posts: 4761
Location: Sydney, Australia
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| Posted: Sun Jul 20, 2008 4:33 pm Post subject:
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We are trying to do a run of PCBs right now, it just depends on the order being done, and Mosc being in a position to distribute them. When (not if) it goes ahead as far as I know there will be at least 200 ordered.
I'll point the people with the power at this post right now.
Hang in there! 
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Rykhaard
Joined: Sep 02, 2007
Posts: 1290
Location: Canada
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| Posted: Sun Jul 20, 2008 5:32 pm Post subject:
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| Uncle Krunkus wrote: | We are trying to do a run of PCBs right now, it just depends on the order being done, and Mosc being in a position to distribute them. When (not if) it goes ahead as far as I know there will be at least 200 ordered.
I'll point the people with the power at this post right now.
Hang in there! |
200! Good lawrd! Mmmm. Just thought - I'll wait to see what the price will be but if it turns out to be lower, I'll increase to 3 or 4 of them.
(Rem'ber - my frame of mind as far as drums go is tied up in the world of Neil Peart; Terry Bozzio; etc. ) |
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tommi
Joined: Dec 05, 2007
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Location: Italy
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| Posted: Mon Jul 21, 2008 1:19 am Post subject:
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So, if I got it, there WILL BE a run of PCBs. Well, if I haven't misunderstood what Uncle Krunkus said, that's a very good news!
In this case, my order would be at least two of them !
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State Machine
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| Posted: Mon Jul 21, 2008 11:14 am Post subject:
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| Quote: | We are trying to do a run of PCBs right now, it just depends on the order being done, and Mosc being in a position to distribute them. When (not if) it goes ahead as far as I know there will be at least 200 ordered.
I'll point the people with the power at this post right now. |
OK great ..... Good thing you chimed in Andy It's good to be in the know, unfortunately, nobody else was including me. Thanks man !!
Bill |
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loss1234
Joined: Jul 24, 2007
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tommi
Joined: Dec 05, 2007
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bugfight
Joined: Aug 02, 2007
Posts: 188
Location: Arlington, TX USA
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| Posted: Wed Jul 23, 2008 12:14 pm Post subject:
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i'll be getting 4.
sheesh, i hope 200 is enough... |
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goodrevdoc
Joined: Sep 11, 2006
Posts: 288
Location: Philadelphia, PA
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| Posted: Wed Jul 23, 2008 9:17 pm Post subject:
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| Quote: | | i'll be getting 4. |
I had the same thing in mind. Great case, Tommi!
-justin |
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State Machine
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| Posted: Thu Jul 24, 2008 4:10 am Post subject:
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| Quote: | | Waiting for MPS pcbs... |
Cool case Tommi ! The handle strap adds a nice touch ! Which power supply are you using? I see the transformer mounted on the side panel.
Bill |
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tommi
Joined: Dec 05, 2007
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State Machine
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| Posted: Thu Jul 24, 2008 5:05 am Post subject:
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| Quote: | Thanks very much !
I am using the MFOS wall wart supply: |
Nice, OK, I see. Thats a slick little board. Major filtering if you need it and scalable to. Nice price. Good for things like transient currents and such with all that capacitance behind you. Good choice for hte MPS. You are using the split 15 V configuration I presume for the MPS?
Bill |
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State Machine
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| Posted: Thu Jul 24, 2008 5:09 am Post subject:
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| Quote: | i'll be getting 4.
sheesh, i hope 200 is enough... |
At least 4 for me also .... In light of what Mr. Krunkus says, I should just wait then ......... oh this duality kills me, vector board it, wait for PCB's 
Bill |
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tommi
Joined: Dec 05, 2007
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fonik
Joined: Jun 07, 2006
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Location: Germany
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| Posted: Thu Jul 24, 2008 7:06 am Post subject:
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| State Machine wrote: | ...... oh this duality kills me, vector board it, wait for PCB's
Bill |
are there schematics available?
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cheers,
matthias
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Big Boss at fonitronik
Tech Buddy at Random*Source |
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Uncle Krunkus
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| Posted: Thu Jul 24, 2008 7:41 am Post subject:
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Yep,
Just go to Scott's site and download the MPS documentation .zip
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What makes a space ours, is what we put there, and what we do there. |
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State Machine
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Posts: 2812
Location: New York
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| Posted: Fri Jul 25, 2008 3:03 pm Post subject:
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| Quote: | | 've got +/- 15v on the output. Do you meant that for split 15v? |
Oh sorry, yes, thats what I meant
Bill |
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