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Shuriken

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Posts posted by Shuriken

  3. SEQ4 Case Bulk Order 2012?

    in Bulk Orders

    Posted

    Ah, got it, I missed the point (as it usually happens with me, sorry about that) :sad:

     

    NP :wink:

     

    Hmm, the only problem is that Heidenreich page says H1 needs to be 45.0mm at least. Assuming TK's box H1 was 45mm I'd say 50mm would be a safe bet. I'm also not sure till where is H measured. Anyway, we're getting closer with the reverse-engineering :-)

    One more remark - side panels are 3mm thick but with 1.5mm cutout. Since B includes the side panel thickness the 3mm (2* 1.5mm) should be added to front panel width to make B=437.5mm. And, that's 17.22", not 17.5", btw :-)

     

    There is no need to and you can't do that anyway because the panel will be too small after increasing T.

     

    Unfortunately the Heidenreich online tool, does not automatically adjust if you make H1 too tall. So i think someone needs to actually make a quote request to see if the calculations are ok.

  7. SEQ4 Case Bulk Order 2012?

    in Bulk Orders

    Posted

    Shuriken,

     

     

    if you're referring to http://www.sequencer.de/synthesizer article the pictures do tell that he used STM32 core, not LPC, as can also be seen from answering the questions throughout the article.

     

    Some time ago I tried to make the measurements to accommodate LPC core in the box but never finished that (I still have the A3 paper with http://www.heidenreich.de/english/products/group_06/variant_b/skizze_pultgroessen_variant_b.pdf printed in my laptop bag). Making the front slightly taller will probably cause the frontpanel height to change since it's angled, maybe by a fraction but maybe enough already for the panel not to fit (and Heidenreich doesn't use the panel size a manufacturing parameter, alas). So you would need to lift both H as well as H1.

     

    The problem (for me, at least) was that http://www.ucapps.de/midibox_seq/mbseq_case_measures.pdf shows all the dimensions (e.g. 35,78mm from bottom to the front-side top screw but this doesn't seem to be the H1 dimension (that seems to be till the front hinge top if I can say from the enclosure sketch). If I got it right you can't re-create the order based on the sheet - you're still missing the H1, the other (H, B, T) seem to be there assuming the 'B' doesn't include the side panel thickness. But maybe TK can reveal the number and we could simply add 5mm to both H1 and H and have the job done...

     

    My two cents, if anyone can prove me wrong I'd be happy to hear that my concerns are not really concerns and would be first one to get the case (two, actually)  :rolleyes:

     

    P.S. Am I the only one missing 'preview before posting' in the upgraded forum engine and the only one missing lack of GUI when quoting? :sad:

     

    Hope this helps,

    freddy

    I am well aware off the fact that he is using STM32 Core. Not only because of the fact that he got the Core32 board frome me :wink:. If you look at the pictures, i never ever see more then a blank back panel. You can also notice that he is using low hex distance bolts as his board sits lower then the panel profile. So that would make the picture a good example for an LPC17 solution.

     

    But i agree on the fact that we need the exact dimensions based on the measurements that heindreich requires. I couldn't figure it out from the pdf i found either. So my assumptions were based merely on the pictures orange_hand posted.

  9. SEQ4 Case Bulk Order 2012?

    in Bulk Orders

    Posted · Edited by Shuriken

    Well, organizing a bulk order for an existing design is no big deal. If someone can provide this, I'll do the shipping and handling. Designing a case for the LPC17 is currently out of reach for me. A MB6582 and SEQ4 build plus an ongoing ALBS bulk order keeps me pretty occupied.

     

    Edit: if you don't plan to mount the board directly to the back panel, the LPC17 will probably fit: http://i150.photobucket.com/albums/s119/ws4711/40%20MBSEQV4%20Project/Front_Panel_In_Case_1.jpg -- maybe somebody can verify this? I have a case here, but no LPC17...

    I don't know, how orange_hand managed the rear panel, he used a Quad IIc_MIDI PCB instead of the Core32 onboard MIDI ports. Well, I'll ask him next time we text.

    The problem is that the LPC board is 10cm deep. So if you mount it to the back, the LCD connectors are touching the CS pcb. With lower hexbolts and not mounting it to the backpanel could work.

     

    Not sure how orange_hand exactly did it. His pictures don't tell :wink:

     

    It might also be fixable by just making the panel at the front a little bit taller. By the look of things, there is room for the whole construction to change angle without changing the other panels.

  14. Core_LPC17 with LPCXpresso and LPC1769 parts

    in Parts Questions

    Posted

    If you compare pictures between the right one and the wrong one, the main difference is the pin layout at one end of the board. I tried to find documents on the one you ordered but couldn't find anything to do the pin compare of the pin matrix of the 6x9 pins on the right edge. The good part can be found at

    http://www.mouser.com/ProductDetail/Embedded-Artists/EA-XPR-003/?qs=S92LKl1JvFyxqKp2Q1rskQ== and it includes a link to a PDF document that has the pin assignments.

     

    I don't know if your board will work but just comparing the pictures, the board you have has far fewer parts. And I have found it difficult to find the right part if you just enter “LPC1769†in the mouser search window. Now wonder you ended up with a different board.

    Mousers disclaimer says it all. Images are for reference only. If you look closely the image is for an LPCXpresso LPC1343. The Partnr. OM13000,598 is for LPC1769. The NPX website says, however it seems some of the links point to an old description claiming it to be a LPC1768 board.

  18. GM 5x5x5 19" Case Design Competition

    in Miscellaneous

    Posted

    wouldn't it be easy to take the original usb jacks that are used in the gm5x5x5, put 2 on a perfboard and mount that to the front (and just connect the 4 cables (or 8 for that matter) with the pcb)

    ?

    but maybe i just failed to understand the purpose of the usb cable.

    Yes, that is possible ofcourse. But i already soldered one. And i think this is more rugged then putting it on a pcb.

  20. MB-6582 in Ponoko case

    in MIDIbox SID

    Posted · Edited by Shuriken

    That actually sounds like a very good idea. Where did you get them from?

    I bought the enamel markers online from a "hobby" shop in the Netherlands. The markers are from a company called Marabu. Maybe you can find them online in a shop near you.

    So far i used them to paint the green pcb from a lcd black. It was in the clear acrylic case of my shruti-1. The green didn't match the red polivoks pcb so good :wink: I also painted the metal hex distance bolts in the shruti. Which also worked out great.

    Update: today i used a white marker on my Shruti XT. It worked quite well and you can do the touch up with a alcohol based product.

  21. GM 5x5x5 19" Case Design Competition

    in Miscellaneous

    Posted · Edited by Shuriken

    I have a suggestion here. I think the main reason why there is not so much response to the competition is that the layout of the GM5x5x5 board is somewhat counterproductive for a 19" enclosure design. Two of the boards side by side are too wide to fit the 19" limit, and having them overlap in an upside-down way has the drawbacks that we already discussed.

    Maybe we should stall the competition until all the boards from the recent bulk order have been delivered, and then see if someone comes up with a more rack-friendly, maybe modular, PCB design that gives more options for a 19" case design?

    You are right. The upside-down approach did not work for me as i don't even have enough room for that. There is too much overlap of the two boards.

    So last weekend i have been designing a backpanel with normal din connectors instead of the pcb mounting ones.

    backpanel.png

    That way you can fit 2 x GM5x5x5. However the downside is the backpanel itself does cost almost 100 euro.

    Another possibility would be to make a separate pcb with 10 pcb mounted din connectors (and maybe usb). But i think you would still want to screw those connectors to the backpanel for additional support.

  25. Decent 19 Case

    in Parts Questions

    Posted · Edited by Shuriken

    I buy this brand since I am in electronics ( as it is Italian brand I found it at the corner shop when internet was only a dream )

    it is well build and not very expensive and my 9090 is in one of these :smile:

    Regards

    Antix

    Yeah, NorthernLightX and myself bought a couple of cases there. They are very good quality items. Only downside i can think of is the standard backpanel with the AC connector hole already cut out. Which is ofcourse great, if you are going to build something with AC PSU. However with any usb powered device, you need to replace the panel.

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