Wilba
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Posts posted by Wilba
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Can you clarify exactly what you are doing?
i.e. are you using shunts in JP set to 6581 but using 8580 SIDs?
What power supply are you using?
I'm not sure if what you are doing is "safe" or makes any sense, actually... the 8580 needs 9V supply, so if you're connecting 9V DC input power directly to the SID, then how is the 7809 supposed to work with input voltage equal to output voltage?
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and in the build guide:
P1, 50K trimpot, Marked “503†on back.
P2, 10K trimpot, Marked “103†on back.
:poke:
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Hey. The 2 trimmer pots... one is 103 and one is 503, so I am assuming they are different values. Which one goes in P1 and which in P2?
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While I do think that TBS' behaviour is completely unprofessional, unethical and just plain wrong - especially after having been talking to them on the phone for hours and having gotten his word that they will not release/sell/etc. anything without prior consent by TK and Wilba - please do not spam their pages, DDOS attack their servers, ask your local biker friends to drop by or do any other stupid stuff of that sort. Feel free to vent your anger about their behaviour whenever you talk/write about TBS/MM though, preferably on public forums.
I agree.
Please don't go here: http://www.facebook.com/pages/Mode-Machines/178267622200065?sk=wall and post "offensive comments".
In particular, don't "Like" people's "offensive comments".
BTW you have to "Like" Mode Machines in order to "Like" or post "offensive comments" on their wall, so don't bother.
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This looks like a conspiracy to me! :frantics:
How did you sell 50 kits without announcing it here?
I only saw some pics of prototypes in the gallery, and some vague comments about it.
Where else could i have looked?
People in the OPL3 chipset bulk order were offered kits, and then a few people asked me directly to get on the list.
It is now officially announced:
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Click for full size view. More photos on Flickr.
sammichFM Assembly video made by Siempre La Luna (featuring backing track by TK!)
sammichFM
sammichFM was designed to be the "no excuses" MIDIbox FM synthesizer kit - i.e. for all those people who want a MIDIbox FM but consider building it with modules too time-consuming, too newbie-unfriendly and/or too hard to design and construct a control surface.
sammichFM therefore has the following design constraints/features, which support each other:
- looks a lot like sammichSID
- cheap (relative to fully modular MIDIbox FM with "pro-looking" control surface)
- small
- DIY newbie friendly
- minimal control surface
- single "walwart"/AC adapter supply, no bipolar PSU and mains power wiring!
- "sandwich-style" stacked PCB design, no wires!
- laser-cut 3mm acrylic case by Ponoko, customization possible
- industry standard 2x20 character LCD, customization possible
- common control surface parts used, customization possible
- available as a complete kit, including PCBs, components, case, hardware and new OPL3 chipset!
MIDIbox FM Synthesizer features- One Core module and one OPL3 module, fully integrated on one PCB with power supply.
- 4 simultaneous instruments of 6 voice polyphony each, plus drum kit. Each voice is a 4 operator waveform.
- Each instrument can be routed to one of four audio outputs, via two stereo 1/4" phono jacks.
- Five "BankStick" slots, so you can store 5 banks of 128 patches, 32 "Ensembles" and 16 "Drumsets"
- Minimal control surface with up/down arrow buttons for fast menu scrolling.
- 2x20 character LCD with support for low-power (25mA) or high-power (250mA) LED backlight.
- Potential for future upgrade to 32-bit microcontroller via an undocumented "daughterboard" header.
BATCH #1 SHIPPED APRIL 1st 2011. I HAZ SPAREZ!
BATCH #2 (50 kits) SCHEDULED TO SHIP MAY 1st 2011
Go here for more details: sammichFM Info
- One Core module and one OPL3 module, fully integrated on one PCB with power supply.
- looks a lot like sammichSID
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Do you know how much of the build guide is already devoted to idiot mitigation? :rolleyes:
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Tut Tut Wilba, what with the promises it'll be ready before the kits arrived. ;)
Guess you underestimated the efficacy of your Antipodean postal services!
No, I underestimated how much time it would take, and overestimated how much time I had. I expected to finish it by the 6th April.
It's finished now, but I will add some photos of painting the engraving and probably discuss power supply options in more depth. I got a bit lazy with this one and haven't actually measured current load :whistle: OPL3 is so much lower than two SIDs that it wasn't as important, except when you need to tell other people what kind of plugpack to get.
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I already know about this, and I will comment more on it later.
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You're not the only person to throw out the clear window piece.
I can supply spares, fitting them is sometimes tricky, which is why I do it, also, if a window is slightly too big or the hole too small, I try a different one until it fits.
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Sheesh... and I still haven't finished the build guide. Sorry. The almost-finished version is available on request, it's just missing the voltage testing diagram/photo thingo a la sammichSID build guide.
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I'm going to test the slave 8580 SIDs first to see whether they're working. Can I do it by simply connecting them to the master core's J10, which is running two 6581s (and the appropriate setup_6851.hex), while feeding them the correct voltage (9V)..?
Yes.
The SIDv2 walkthrough ('Testing the SID module' section) says that "the only difference [between setup_6851.hex and setup_8580.hex) is the filter calibration value which will be written into the ensemble BankStick during formatting (6581 uses range 000..FFF, 8580 range 000..600)."What are the practical implications, if I were to try what I've described above? Or is it advisable at all..?
You will get a slightly different filter cutoff range for the existing Ensembles which were initialized for 6581 use, but you can then change the Ensemble to match the default 8580 settings and there would then be no difference.
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lol... it's no April Fool's joke, 36 of the first batch of 50 sammichFM kits were shipped on the 1st April.
Stay tuned for an official announcement of sammichFM.
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Start a thread in the Flea Market forum.
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The only good (no noise) switchmode PSU I found was this one:
http://www.jaycar.com.au/productView.asp?ID=MP3242&CATID=27&form=CAT&SUBCATID=381
All the other ones (i.e. regulated DC plugpack kind) I've used were noisy. I observed that if I "earthed" the negative output, the noise went away... but that's a bit of a hack and possibly dangerous or something. So I went looking for switchmode PSUs that had an earth connection (i.e. 3-pin power socket). I bought the one linked above and it's rock solid for sammichSID, not even a hint of noise, my transformer based regulated 12V DC plugpack is noisier than this one... but no good for sammichFM. Don't ask me why. Maybe because it is earthed instead of a basic AC/AC transformer.
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What he said. Yellow wire is correct, pin is actually 11.
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If you are resoldering R43, just use the excess lead from the resistor and solder to the pin of U22.
D0 of JD1 connects via bottom track to the "via" below R31 between R31 pin 4 and 5, then via top track to pin 11 of U16 and then pin 5 of R30.
So you can connect it to the "via", or to pin 11 of U16, or pin 5 of R30. If it were me, I'd use an insulated wire to pin 11 of U16.
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Are you sure the noise is from the PSU and not from the SIDs? 6581 SIDs are pretty noisy anyway (i.e. very high noise floor).
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I linked to one from Reichelt in this thread post: http://midibox.org/forums/index.php?showtopic=13161&view=findpost&p=121095
but link is broken now.
Just wait a bit and my German slave nILS will assist you... :wink:
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Do I flag this thread as **FIXED** ? :wink:
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Very nice indeed! :thumbsup:
However, it's a big tease if you don't show us how you made it... esp. parts that other MIDIboxers might be interested in... the case, how you made the panel, etc.
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It sounds like there are multiple things wrong, which is hard to diagnose and fix remotely :wink:
The easiest and quickest way to get this going again would be to send it back to me so I can swap out things like LCD, PIC, other ICs, etc. (and test your parts in a working sammichSID). Then anything not working I can replace straight away.
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FWIW I used a 4x20 LCD on MB-6582 because it fit better... you can get components closer on the left/right sides, whereas with a 2x20 you can get components closer on the top/bottom sides. TK did use the extra two lines of the 4x20 but it's not essential, so you may not miss the extra bling.
I was always thinking that a 3U rack design should try to use a 2x40 if possible, because the extra displayed items would be really useful, and you have plenty of width to work with. I was working on something like that a long time ago...
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Nicely done, TAG! What tactile switch did you use for the bottom PCB? I considered doing this for my prototype but couldn't find a tactile switch with low enough activation force.... hence my labour-intensive extra contacts idea, which got very boring to make. One day I'll get around to finishing it so it wasn't a complete waste of time and money :wink:
In the meantime, I bought an Axis-49 to satisfy my isomorphic keyboard cravings... there are some utilities to convert it to Wicki-Hayden (aka. jammer) layout. I saw this video and decided I needed a short-term fix:
People watching this thread might also be interested in this too:
A few faceplates for MB-6582 style SID
in MIDIbox SID
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Nice panel layout!
I took the liberty of editing the topic... "Wilba style" => "MB-6582 style"
(FWIW "Wilba style" actually means "elitist douchebag" or "cheap minimalist" depending on context, i.e. "That sammichFM is so Wilba style")