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  1. Parting ways with MBSEQ Control Surface PCB and parts kit and most of built and to be built DIY audio projects.   Comes straight out of my DIY audio box which seemingly have been left for far too long unattended, and life moves on at its own pace.  What you receive: MBSEQ Control Surface PCB in original plastic wrap MBSEQ Control Surface Parts Kit in original plastic wrap (SmashTV)  Encoders (17) !!! After taking the photos, I realized tactile pushbutton switches do not belong to this kit and you will need more anyways. They probably belong to another cool DIY project i had collected for many years. Anyways, if you think you'll have a use for them too, tell me so otherwise they wont be included. Crossing fingers so these terrific board, encoders and the parts kit would be a fast-forward track for somebody with true DIY spirit out there who could  enjoy it as much as one dreamt of.     Not looking to profit, Shipping from Canada or US at cost. Kartoshka
  2. My MIDIBOX SID build is using the MB-6582 main board and a custom control surface. I'm building it inside a VIC-20 case and the control surface is built on a modified keyboard using the keys as buttons. The encoders I got push up through the holes in the keyboard tray. Due to a lack of room I'm not including the matrix. LEDs are placed around the keyboard area and my attached layout shows where I'm thinking of putting them. I went through a bunch of different layout ideas and ultimately went with whats attached. I tried to keep knobs near the edges so i can put labels right next to them. My goal is to have the chosen keycaps represent the button functions, but I'm limited by the fact that I only have a single keycap set. I'm using the old PET style keys so its hard to get extras without paying an arm and leg. Hence I'd love to have two CTRL keys, but I only have one so I'm using A for Osc knobs ENV/MISC/ASSIGN selector. While I think I tried to place everything as optimally as possible, I lack the experience of using these devices so I thought I'd see if any of you seasoned MIDIBOXers might have any thoughts, suggestions, or see any obvious pitfalls I might be missing with what I choose to do. For anyone interested, I'm documenting my progress on a blog on my website: http://www.fallenturtle.com/c64blog Thanks!
  3. I'm building my synth inside a Commodore VIC-20 case. The LEDs will be poking out of the surface so I'm trying to figure out the best way to apply labels to the case surface. One method I'm considering is using water slide decals which are popular with people who do models and custom guitar gear. The pack of this special paper is $20 so I'm hesitant to buy some if its going fall off or look like crap. Has anyone had any experience trying to use these type of decals on a surface like the commodore cases? My concerns are: 1) while the case is mostly flat, its got a little texture, so I'm wondering if that will lead to the decals falling off. 2) If the case is matte and I'm not planning to apply a clear coat to the top, will the edges of the decals be really obvious and look bad? I'm also open to suggestions on better ways to apply the labels.
  4. Hi everybody, After spending my weekend on reading and brainstorming about the MBFM , I have some ideas i would like to share =) First , i will talk about the Pros and Cons of the MBFM "V2.1" on STM32F4 made by Sauraen and Evolution of Control Surfaces. By studying the way Sauraen worked about FM synthesis and especially in his try to make MBFM evolve, i learnt much. Pros : His Control Surface is visual , advanced and you have quite quick access to parameters when you understood the thing . Driven by the new CORE32 , much fonctionnalities are available. Cons : His Control Surface is Messy and unoptimized at first sight . By making the design on his way "too quickly" and without documenting "well", Community isn't aware of all this amazing work . PCB design is still "modular" Many may not understand, but i think the STM32F4 Core is kinda useless here. CORE8 (with PIC) is well know and understood by the community,and has made its proofs on the "Driving Synthesis OPL3" thing. Do we really need the "overpower" of a STM32F4 ? I think the new CORE32 is more designed to support "heavyweight" applications and UI like RGB BLM, Sequencer etc... Driving 2 OPL3 modules with 2 CORE8 sounds good enough to me. Lightweight is great =) Edit : Due to some good advices , now Really Considering using CORE32 in a second version base PCB , "horsepower" is sometimes useful =) MBSID has evolved with a Control Surface from Step A to C . I think the current MBFM (1.4) Control surface is like a "Step B" . With MB-6582 , Wilba made a full compact All-In-One version of the "Step C" surface of MBSID : Well Designed PCB in 2 parts (Base PCB and Control Surface), designed to fit in a small case, "costless" Components and DIY friendly , Easy Assembly.  Everything you need to build the "sweet designed Synth" you ever dreamt of. I want to Build a full featured, nice to look and easy to use MBFM synth. I brainstormed a bit , and i thought that reusing Wilba design could be a start Based upon a screenshot of the frontpanel of the MB-6582 in frontpanel designer soft, i made a Control Surface Design "Step C" alike for the MBFM synth with some Photoshop copy/pastes. Then i opened the MB-6582 Base PCB and incorported good-sized OPL3 modules instead of the SIDs. I let you see. Some improvements could be made on the FrontPanel, like a shape for waveforms instead of numbers. But i think i didn't forgot too much. Waiting fo some advices before going further into that work =) Regards, JK
  5. Hi guys, I've finished building the base of a mb6582 (including display) and so far everything seems to work as it should (Woohoo!). However, after reading Hawkeye's CS tutorial, I've delayed soldering components onto the control surface PCB until the front panel that I've ordered arrives. Until then, I'd like to rig up a minimum CS using a breadboard and switches/encoders for basic parameter changes (menu scrolling, etc). Is this possible, and if so how? Even with TK's instructions I'm not quite sure how to go about it. 
  6. Things are going well with my Midibox SID construction... I've finished the CORE board and I'm loading up the SID board, but I've gotten to the point where I"m looking more into how I'm going to wire up things. I have questions and google and search on this forum aren't helping me find answers (not that they aren't there, but I'm having trouble finding them). Anyway, here it goes: LCD Wiring: While both the CORE4d and my LCD use a 16(2x8) pin connector the pin mapping is completely different. I'm wondering what's the best/easiest method for rerouting the wires in the ribbon cable... My thought was either simply cut the cable in half, separate the individual wires, connect the correct wires to each other, solder, and heat shrink them. While the colors repeat twice, the ribbon wires are color coded, so that will help make that less a headache I think. The alternative I though of was to use additional connectors and headers on a piece of stripboard and do the remapping on the board, essentially creating a little conversion board. Buttons Connections: I haven't found a wiring diagram to explain which buttons connect to which pins on the SmashTV DIN board but I did find the assignments in the software code, so I figured I'll create a chart for others in the future who have this question. I do wonder if there is a best practice or something for how to wire up all the ground pins. Do I chain them in someway? MIDI Connector wires: For the 3 wires needed for each of these I thought I might butcher an old floppy drive ribbon cable into 3 wire strips. The gauge of this wire is pretty small, will that be an issue with the MIDI signal? Audio Connector wires: Do I need a specific gauge and/or shielded cable for these connections?   Thanks!
  7. My sammichSID is hopeless Everything is working except the control surface, It's not reacting to buttons and encoder, and it's acting weird....I swapped IC's, uploaded and re-uploaded firmware....checked solder joints...I'm all out of options...the more I try to fix it the more it gets worse...I'm getting paranoia over stuff, I thought one of the buttons was bad so I took it off and ruined a trace.....I have to lay off it, because I'm making stupid emotional decisions....so PLEASE  I NEED HELP! Anybody who has done reparations on Sammich please respond, I will pay for your time and expenses. I don't want this sammich laying in the corner, broken, not being used...It makes me VERY SAD thank you for helping me
  8. Hi, some time ago I made an Arduino based custom control surface for DSI Tetra to control 95 or so parameters (via NRPN), inspired by the Waldorf Blofeld button-encoder matrix. I thought I'll drop the info here too. Here's a video of the basic operation:   I also posted DIY instructions & the code on the DSI forum, here's the link in case anyone's interested. Stupid though that you have to register in order to read the forum. http://dsiforum.com/viewtopic.php?f=19&t=6778  
  9. Hi all,   as a by-product of my latest project, the MIDIbox Matrix (a MIDI router with up to 56 in- and out-ports), I have created a PCB for the Standard Control Surface or SCS. This little board assumes that you are using a 2x24 character LCD and 4 items per menu page. This is slightly more character space per menu entry than what TK is using, however the code is fully configurable to handle this. Personally, I find the 5 available characters per menu item much more comfortable and less cryptic than lower character counts.   Assuming that you want to use both shift and exit buttons for navigating the menus, the board is prepared for one extra button to the left of the display. Also, two additional encoders (with push function) can be used - but these can also be left out, obviously!     Specs of the PCB are documented in the WIKI. I have 4 of these available, but would be willing to order more if there is enough interest. Asking price is 13€ per board, plus shipping costs. Drop me a PM or answer in this thread if interested.   Best, ilmenator
  10. Hello everyone, I have a pretty dumb question.  I have ordered 15 encoders for my MB-6582 control surface, and the shaft size is 20mm, however I'm not sure what the size of the knobs I order for them should be.  I assume they shouldn't be the same (as in 20mm) but I'm not sure.  I did a search around the forums to see if this had been asked before, and tried to compare other peoples builds to part sizes but couldn't find any for-sure answer.    Thanks for any help!