135 posts in this topic

So getting real close to ordering everything.
Im currently writing up a spreadsheet with a list of the LEDs required for the version of the front panel without the light pipes for the the LED rings.

Sauraen just one thing I noticed about the FM widget,

particularly the 4x BiColour Red/Green LEds for the operator nodes.

I noticed you're not using light pipes for these in your video, and also they're not pushed through the front panel. It looks like theres a gap or a hole if you will.

Is it possible to push these through the front panel?

Edit: I see now you're using 2 single / separate Leds in yours, 1 green and 1 red with the anodes of each in common.

I presume if I order the Mouser ones you linked I can easily push them through the front panel?

Edited by Smithy

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And one last thing that mystifies me.
For the TriForce parts TF1-TF3, you have Red Green and Blue next to each.

But for the life of me I cannot see any holes for LEDs for TF1-TF3.

Were you thinking of adding on 3 extra leds to create a coloured Triforce or something? 

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Apologies for the 3rd post but I've noticed that either my LED count or yours is off.

Here is a link to my Google Sheet for the LEDs required for Quad Genesis without Light Pipes for the LED Rings:
https://docs.google.com/spreadsheets/d/1e7PeWjyg9Qxluu4zSR4OnmTipwN3ZEPqNWFs5G1rmXw/edit?usp=sharing

(I'm going to use Green instead of Blue LEDS for the LED Rings as you can see)

When I add up all the LEDs in my sheet I get 533 in total (bottom of the document).

But when I add the LEDs in your dokuwiki I get 553,  which is 20 extra.

Capture.PNG

 

I presume you know the total amount of LEDs required for the project or at least can find out easily using Kicad or whatever, so we can see which figure is wrong. Thanks.

BTW: I'm not including the Numerical LED Displays in this total, just the 3mm leds and 4 x bicolour leds (5mm)

Edited by Smithy

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For the bicolor LEDs, what happened on the first build was that I accidentally got the wrong ones (common cathode instead of common anode), and since I didn't have time to get new ones in before I had to deliver it, I just put in discrete red/green LEDs under the panel, sort of visible through the hole. For my second build, the one I currently have, I got the right LEDs (the ones whose part number I listed there) and they work fine.

The Triforce parts are a joke--there's no component corresponding to them, just the silkscreen graphic. They're labeled as "Red, Green, and Blue" for the Triforce of Power, Courage, and Wisdom. Maybe I should have labeled them all "Gold" instead.

I just counted the actual LEDs of each color/category on my own synth in LED Test mode, and I get a total of 549. The differences from the list on the wiki are that I have 18 Yellow LEDs for lighting buttons/caps (instead of 24), and 76 Green LEDs for lighting buttons/caps (instead of 74). The numbers on the wiki were from my planning documents, but I don't remember in detail why they're different from the final version. I'm putting up a picture of my front panel with all the LEDs on so you can compare (or count if you really want). (I'm not counting the LED display segments, just the categories in the screenshot you posted.)

Of course, when buying components, you always want to buy at least ~10% extra of each kind.

Front panel full.jpg

Edited by Sauraen

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Just discovered that the System Load LEDs are missing from the Wiki!

LD52-LD67

That pretty much covers the where the missing LEDs went to.

Now my Grand Total LED count matches your count of 549!  :cheers:

I've updated the Wiki with the missing LEDs.

I've also corrected the FM widget in my Google Sheet, some yellow and bright yellow LEDs were in wrong place.

Time to start oredering!

Edited by Smithy

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Sauraen I don't suppose you have 21+ of the Bourns Encoders spare?

Mouser are sold out unfortunately. I might put a post up in the fleamarket.

Edit: Managed to buy some 17.5mm Bourns encoders of the same type with a little help from Tim!

Edited by Smithy

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So Yuzo Koshiro and Motohiro Kawashima have an announced a live tour performing the Streets of Rage and Revenge of Shinobi tracks live in conjunction with Red Bull Music Academy!
 


Imagine if they knew about MIDIbox Quad Genesis, it would blow their mind!

I would love to send them a video of one of us performing their original tracks live with it.

Sauraen I think you should do it as the creator and get the credit deserved.
If not I'd happily oblige.

Yuzo has been pretty responsive to fan made recreations of tracks on twitter in the past.

Edited by Smithy

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Hi Sauraen and All,

very impressive work, WOW :shock:

i'm itching to build one, but this gigantic frontpanel making it so impressive also scares and restrains me from doing so... It seems that building the frontpanel takes around 80% of the overall effort, cost and time, blowing up the project to a size too large to fit into my spare time and hobby budget. Also the panel itself... so far, i did my front panels from scrap sheet metal on a drill press (+little rework with jigsaw and file), but with this layout, that way would take forever, so the only realistic option is to buy the machined part, again boosting the price..

Did you (or someone else) already consider a "lite" version with the same sound engine/functionality but much less IOs for guys like me? Would it work with the current software to omit some of the buttons/LED and access the functionality/information otherwise? As the SID, where everything can be accessed with the minimum control surface and all other stuff can be installed as an option. 

What i would like to build is not the absolute minimum, but something in-between. Full functionality as a standalone midi synth, a set of buttons/display/enc to give access to everything plus some additional ins/outs for better access to only the most important features/params. No LED-Rings, no frequency display, no vu-meter.. do you think, this would be possible with your project, or do i need the full CS to access everything?

in case it works like this-

-which LEDs/Buttons/Encs are absolutely necessary?

-which ones would you recommended to install?

-which do you use/like most? (only practice can show ;-))

-which are less important?

 

best regards

simon

 

 

 

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Glad to hear of your interest! The front panel is definitely a big hurdle. I have two versions of this project for those who want to do something but not build the front panel: MIDIbox VGM Player and MIDIbox Genesis Tracker. However, it sounds like these two might not have the functionality you're looking for.

There is no version which provides the complete synth engine and all the capabilities but not the whole front panel. The controls exist to edit things and give the user feedback about them--having all of this stuff editable from menus would not only make it very difficult to use, but would require a lot of changes to the interface software. It's not too much of a stretch to say that the synth exists primarily to be a set of nice front panel controls for messing with the Genesis chips. In retrospect I understand that this made a high barrier to entry, but this is the box I wanted to build.

The aluminum is a major cost, but it is not strictly necessary--since the whole front panel is on one large PCB, you can just use that as the front panel, though it's not as nice. If you would like to go this route I can gather interest and have another round of front panel PCBs manufactured, and sell you one for a reasonable price (under $100). There would be about 10-15 hours of soldering things (like the 638 LEDs) onto it, but that's all pretty straightforward. (And since you would not be using LEDs which have to be ultra-bright to shine through the translucent plastic, you could use cheap LEDs for all of them.)  All that's left after that are the Genesis modules (which should still be for sale on the MIDIbox Shop--let me know if they're out) and the core, all of which are not very expensive or time-consuming.

If you don't want to do this, I would suggest you build MIDIbox Genesis Tracker and control the synth from your computer. I had a working build of this firmware at one point, but I've since made lots of changes to the VGM module API and not updated this project, so it won't work as is--but if you want to do this I would be happy to get the code working again for you.

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Hi Sauraen,

thanks for your quick reply. i think i will go for the Tracker/VGM-Player first (same Hardware for both, i guess?) and decide later on, how to continue.

a: have fun with it and be happy and/or don't have time to continue

b: take the hard way and build the full front panel

c: try it the "soft" way; i.e. fork it, take/adapt most of your code, but implement a menu structure to access params with less control elements... well knowing this would in fact be the hard way :happy:, (as i don't have any mios coding experience yet,) but also the more interesting...

will see.

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