seppoman

Hi, some of the chat regulars have already heard about it, but I thought I'd should write a forum post about this project, too :) In the last months I designed a dual SSM2044 filter PCB for use with e.g. MBSID V2. This PCB contains two of the famous SSM2044 24dB low pass filters with the necessary cirquitry, additional LM13700 based Q linearization cirquit and a tiny Omron micro relay for a software controlled (via gate out pins) bypass function. The layout is optimized for use with the AOUT_NG module, requiring the addition of a bipolar option when used with regular V/Oct sources like the original AOUT module. Some pics: Short audio demo: http://www.seppoman.de/stuff/SSMtest2.mp3 That's MBSID V2 with 6581 SIDs, "Bassline Demo2" default patch with SID filters turned off. First a sweep without resonance, then a bit of resonance and high resonance. Last a sweep up short before oscillation and down with oscillation (beware of high volume, the end is a bit distorted because of clipping ;)) The PCB still isn't final - got the supply connector wrong way for connection to the AOUT_NG, and you might have noticed that I did underestimate the size of 10nF Styroflex capacitors ;) That's it for now, Seppoman

Hmm, also das ist finde ich definitiv viel zu teuer. Die N-Fader bekommst Du bei Conrad schon für gut 20 Euro, und wenns vielleicht mal wieder ne Sammelbestellung gibt, sogar auch in der 10-12 Euro Preisklasse. Diese Behringer-Fader sind nicht die Allerschlechtesten, aber für Gebrauchte würde ich vielleicht nen Fünfer zahlen... S

Thanks Thorsten, I can delete now - Group 9 is us then :) S

Genau von denen hab ich hier auch zwei Stück liegen. Vorweg, wenn sie schön billig sind, spricht nichts dagegen. Die Dinger sind nicht übermäßig alt (das DDX gibts glaube ich höchstens seit 5 Jahren). Man kann nicht so ganz direkt sagen, dass sie von Alps wären ;) Die 100mm-Fader selbst sind von Alps und meiner Meinung nach von guter Qualität. Daran hat vermutlich entweder Behringer selbst oder eine andere Firma einen Metallrahmen mit Zahnriemen und einem Mabuchi-Motor angebaut. Mabuchi ist aber auch eine anerkannte Firma. Ich habe die Dinger nie mit Midibox-Hardware benutzt sondern nur für eigene Experimente mit einem H-Brückentreiber am Atmel. Das hat aber soweit sehr gut funktioniert und sie fühlen sich recht gut an. S

Hi, I'm no expert for xox stuff so I can't really answer the poll - no idea how it *should* sound :) but I've got a slight tendency to like the sound of example 2 better, it has a tiny bit more grittyness whereas 1 is a bit cleaner. S

Running VSTis is not possible with a PIC (or other microcontroller). VSTIs require a PC or MAC to run them, both because of performance and compatibility. But you could probably build a small µATX PC system into a rack case that is preconfigured to autoboot into a VST host app with your favourite plugins, and then add a Midibox control surface into that case. S

Thanks, not eddie, for that video link :) I've used the technique they call "drag soldering" a lot and with great success, but this video is very helpful to explain it. I added a link on the AOUT_NG wiki page - maybe TK wants to do the same on the OPL3 module page? S

That's not possible. The PIC has an A->D converter but no D->A. There's no way to avoid building an AOUT module, as the topic is "cheap", you probably want the AOUT_LC which can be built for max 10 Euros. S

do you know archive.org? a great place to travel back in time :) http://web.archive.org/web/*/http://www.ucapps.de S

I don't understand the second half of your post - what has this to do with "trying to hide by not posting???" My first post on midibox org was a week after my MBSID was fully working and making noises? Rutgerv offers 8 SIDs which Chewi wants to buy, what's suspicious about that. Take a look at some bulk order pages of Wilba's bulk orders. There are people even buying 24 SIDs from him and nobody comes to strange conclusions by that. Since 2.0, the number of needed SIDs per project again doubled. What's making this transaction different? I think it's not beneficial to the midibox spirit if every newbie is seen with suspicion and "welcomed" with negative accusations. This behaviour is poisoning the otherwise friendly spirit of this community, so please just stop speculating wildly in public. If you've got a reason to think someone doesn't act right, just inform one of the moderators. If you don't, please keep this negativity to yourself. S

only problem is that without digging deeper into programming you only have the 8 pins of J5 at your disposition. so you could e.g. have 2 pots, 4 buttons and 2 LEDs. If that's enough, fine :) Of course you could free a few more pins by disabling some standard functions of other port pins but I don't think it's worth the hassle. If 8 in total is not enough, you can build e.g. a DINx1 and a DOUTx1 on proto board by using only one IC of each kind and a few resistors. That's dirt cheap and doesn't need programming and doesn't consume much space either. You'd have 8 AIN, 8 DOUT, 8 DIN and be way less limited. S

about HKSS: I bought some SSM2044s from them and all of them worked and didn't look suspicious in any way. Before I ordered, I also heard of these rumours and researched it on google - at least on SSMs, nobody except chipsforbrains (who is a competitor being annoyed that hkss sells cheaper) ever claimed there was something wrong with these ICs or had actually bought bad ssms. All you can find is hearsay about mafia and childrens work and fake parts etc. Of course I can't say much about other semiconductors or parts, but to me it sounds mostly like a bad campaign. It's true though that the communication is somewhat lacking - I've asked them how to add postal insurance as the ebay auction doesn't allow the selection of that option and got only a very vague and not insurance-related reply. That they use more than one ebay name doesn't seem too suspicious to me either. Of course there's always some risk in dealing with foreign sellers that obviously don't speak english very well, but if I can get some otherwise rare part from them for a good price, I'd say there's no reason not to try them. S

Have you installed a jumper on J11? there you can select to which PIC the midi in is connected to. Without a jumper, the midi won't go to any PIC. So just put a jumper on position 1 and upload the app. afterwards you can use the cloning mechanism to "upload" to the three slave PICs. S

New box? :D the original post is from 2004, this one is an all time classic :) S

you could use a combination of MidiOx and MidiYoke: MidiOx provides a midi router where you can also send the midi from input to one or several outputs and vice versa by drawing lines between them. You could use the physical midi in port as midiox In and route that to a midiyoke port that's forwarding the data to your application. Now you can monitor the incoming data. Now comes the tricky part: start another instance of MidiOx, then use another midiyoke port to output the app data to an Ox input that is in turn forwarded to the physical output. That way you should be able to see both directions. Note that this post is not based on any real experience, I've never used Yoke myself and never tried to monitor more than one connection in Ox :D S

Oh, and btw you do know that you can't use the 452 PIC for SID V2?

Sounds a bit like you're uploading a MIOS version that's meant for a different PIC type? S

Ah ok I get your point now. Whether a commecial transaction can belatedly become non-profit or not is a philosophical question IMHO. From the legal view I can only say: If one would rob a bank and gave them back their money after a week, he would still go to jail :) S

Hey Smithy, Even though I didn't want to participate in this discussion (already way too many words have been said over and over again), here you've raised my curiousity: What the hell is that? :D Selling is about profit, so nothing you do without getting money can't ever be called a sale, that's called giving a present ;) S

wrong link, bill - he asked for Ain not Din :) the pins on J5 in fact are the A/D converter inputs. the AIN board just gives more inputs. So there should be no problem with using J5 without AIN board. S

It's not unlikely that it has something to do with the server move - TK's post was shortly before the server move, so perhaps the new entry wasn't ported correctly. I noticed that, too, when I uploaded some wrong AOUT_NG pic once. Don't know if that's possible but it would be nice if one could at least delete files you have uploaded yourself and no other page is using. S

I know that of course :D please follow the link I posted above to find out why selfservice should have upload permission ;) S

below the list/thumbnails there should be a file upload button where you can specify the local file and a wiki name. if it isn't there, either there is a browser incompatibility or TK didn't setup your upload permission correctly. S

there are quite a lot of companies offering RF modules. e.g. have a look here: http://www.lprs.co.uk/. Conrad has a great variety, too (only some of them are only suitable for some remote control stuff and not for real data transmission), as do hobby robotics shops. I think one of the easiest is the Easy Radio series from the link above. S

http://www.midibox.org/forum/index.php/topic,9384.msg80371.html#msg80371 :D this means that when you edit a wiki entry, the row of symbols above the text area will have a symbol for "add images and other files" (it's the second right looking slightly like two hills and a sun above) S