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mongrol

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Posts posted by mongrol

  5. SEQ BOM post

    in MIDIbox SEQ

    Posted

    Good feedback. Thanks folks. I'm not long enough in this game to understand how quickly items go out of date. I agree the wiki is the best place for this kind of thing though I've found it to be a bit disconnected and also contains out of date info. This will happen no matter where we put it. I'll keep the BOM in my build thread in Tips n Tricks and park the idea until I gain more community experience. The problem there though is I lose the viewpoint of a newcomer which I was trying to capitalise on while I'm still fresh. :)

  6. SEQ BOM post

    in MIDIbox SEQ

    Posted

    Hi,

    As part of my build I now have a fairly solid BOM for a vanilla SEQv4. These are exported Mouser and Reichelt carts and a couple of extra items that need to be procured elsewhere. Being in Australia I've aimed at getting parts from global suppliers instead of region specific.

    As a newcomer to the community I've experienced the process of gathering up the information needed for a vanilla build from various posts and wiki pages etc. Most of which, while being very good contain now out of date information. I also believe that once a newcomer has scanned through the various wiki's they'll end up in this forum before anywhere else. I think there's value in maintaining a BOM post in this forum for a vanilla build to catch the eye of new people scanning through looking for how to build information. Thoughts?

  7. MIDIbox SEQv4 - Wilba Frontpanel - Round Buttons - Request

    in MIDIbox SEQ

    Posted

    @pawaga. How are you mounting the boards inside the case? The CS will be mounted to the top panel with 10mm standoffs I assume. What about the core and midi boards? Are they just mounted to the bottom panel with washers for a little space? Do you have straight through standoffs going from the CS PCB to the Core or midi boards? I assume there's some straight through standoffs from CS down to the bottom panel. What size are they?

  8. The Nice Knobs Thread!

    in Parts Archive

    Posted

    Necro bumping because this seems to be the most suitable place.

    I got a reply from Julian at Sonic Potions. The encoder knob used in the LXR is this one. It's plastic but a kinda soft plastic. I actually thought it was rubber. I'll be ordering this to go with my SEQ build as I have an LXR and know what it feels like.

    http://au.mouser.com/Search/ProductDetail.aspx?R=450-BA600virtualkey56100000virtualkey450-BA600

    Don't be confused by the picture. It looks pretty much exactly like the one above posted by @Sasha

  14. 10mm panel gap

    in MIDIbox SEQ

    Posted

    Hi folks,

    A lot of documentations say the gap between panel and PCB should be 10mm. Can someone tell me why this is? Is 8mm doable? I'm looking at LED's and if I go rectangular would like them flush with my 3mm acrylic panel. I intend to get LED spacers to ensure they are all uniform.

  18. Mongrol's MidiboxSEQv4 Build

    in Tips & Tricks

    Posted

    4 hours ago, EsotericLabs said:

     There must be some acrylic case designs lying around somewhere in the forum.

     

    The most standard laser cut template I believe is this one from smokestack. It has bugs though and hasn't been updated. I'll be making a new one with interlocking slots round the back and sides with the only front edges using the "teeth" method. It'll be optimised for size as much as possible without modifying the boards beyond vanilla. 

     

  20. Switch Operation Question

    in Parts Questions

    Posted

    Hi,

    I'm looking at push button switches for another project but I'm confused by the switch operation explanations. I'm looking for a toggle button, not momentary but I'm seeing definitions like "On off", On (On), On(off) On. On (On) On.

    Can someone tell me what this means? I'm guessing a toggle is On Off, but I see tons of On (Ons) which doesn't make much sense.

  21. Mongrol's MidiboxSEQv4 Build

    in Tips & Tricks

    Posted · Edited by mongrol
    Update

    Inspired by Hawkeye I thought I'd document and photograph my MidiSEQv4 build in the hope that it helps others.

    I'm planning a fairly vanilla SEQv4 with Wilba's CS and 2 MIDI IO boards. I'll add the Raystar OLED displays instead of LCD. I intend to build a Ponoko acyrlic enclosure and will publish the SVG for once done.. I'll edit this post as I go.

    #0 - BOM and Excitement
    #1 - The Core - Storage for baby voles
    #2 - The Displays - Trust datasheets
    #3 - The MIDIIO's - Chill to the bood
    #4 - The CS - Time is neither created or destroyed. Merely borrowed and given back.
    #5, #6 - The Enclosure - Fat Tabs
    #7 - The CS - Alps Encoder Edition
    #8 - LED's - Aaah
    #9 - Fitting and Finished - Dun dundun dundun

     

    NOTE: This is not a build guide. It is a documented summary of my attempt to build a SEQv4. Some parts from the BOM below may, and indeed already have, changed as the journey continues.

     

    Full BOM Summary

    I'm in Australia where the AUD makes this quite expensive. I'll include costs in AUD and the original currency. 

    |   Qty | Component                       | Source |
|-------+---------------------------------+--------|
|    16 | Knobs                           | Mouser |
|    58 | Switches                        | Mouser |
|    58 | Switch cap                      | Mouser |
|     8 | Ceramic Cap 100nF=.1uF “104”    | Mouser |
|    12 | 10k 6 Pin SIL resistor network: | Mouser |
|    58 | 1N4148 (small signal diode):    | Mouser |
|    16 | Bicolor LED's                   | Mouser |
|     1 | USB Socket                      | Mouser |
|-------+---------------------------------+--------|
| Total | $120.45 AUD                     |        |

|   Qty | Component                      | Source   |
|-------+--------------------------------+----------|
|    12 | 220R resistors                 | Reichelt |
|     6 | 74HC165:                       | reichelt |
|     2 | 74HC595:                       | reichelt |
|     1 | Red 5mm LED                    | reichelt |
|    28 | Green 2mm LED                  | reichelt |
|     8 | 16-pin DIP IC socket:          | reichelt |
|     4 | 16 pin IDC connectors          | reichelt |
|     1 | 16 pin flat ribbon cable       | reichelt |
|     1 | 16 pin dual inline pin headers | reichelt |
|     2 | 10-pin ribbon wire             | reichelt |
|     6 | 10-pin crimpable IDC socket    | reichelt |
|     1 | 10 pin "box-header" angled     | reichelt |
|    17 | ALPS STEC12E encoders          | reichelt |
|     2 | Raystar OLED's                 | reichelt |
|-------+--------------------------------+----------|
| Total | $98 AUD                        | 69.07 EU |

    From SmashTV's Midiboxshop

    • Ordered: 20/1/2016 - Processed: 26/1/2016 - Shipped:12/2/2016 - Received: 22/2/2016 
    SEQ CS board			$35.00
CORE STM32F4 Kit Board		$30.00
2xMIDI I/O module Kit Board	$46.00
Shipping and handling		$27.29
USD Total			$138.29
AUD Total			$209.88 (ouch!)

    From RS Electronics (free delivery in Oz) 

    STM32F4Discovery Kit	$23.45 AUD

    From TM Electronics 

    2xRaystar OLED 40x2 displays REC004002AYPP5N00000
EU Total	90.04EU
AUD Total	$144.86 AUD (double ouch!!!)

    From Conrad

    Posted to mumsie in UK who'll forward it on to Oz. Conrad wanted $80AUD to post a $4 part. 

    1x ALPS-863002-Rotary-Knob-With-Finger-Grooves (Datawheel)
UKP: 2.69

     

    Build Status

    It's time to turn this...

    16020011.thumb.jpg.5784db7160aaf0cce0dcf

    Into this...

    mbseq_case30.thumb.jpg.6597f485024843a24

    Let's do it!

  25. TL1240 Illuminated Switch

    in Parts Questions

    Posted

    Hi folks,

    In the Wilba BOM docs there is this sentence.

    Quote

    The TL-1240 are short (8.2mm) so they cannot be used with encoders installed but are wired correctly for the LEDs. 

    Can someone tell me what the actually means? I understand they are 8.2mm (seems small) and that the gap (10mm) and panel (3mm) means they would actually be below the panel surface. How would this work? Does this mean you can't actually install the encoders at all in order to bring the 10mm gap down?

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