moebius

Digital pots - digitally controlled resistor IC's.. And I wouldn't do that - Captain Hastings from the forum, reported a bad noise problems on a design with a digipot (Hmm.. and what was the gain factor of a BigMuff again.. ;)) The Ross phaser is a OTA based - Just droping the LFO section there and inserting control current thru resistor instead of a original LFO.. Instant SID mod matrix phasing fun ;) Bye, Moebius

Hmm.. ..a bit late, I think.. http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=mios_toy;action=display;num=1062284610 Bye, Moebius ;D

Hi. It's just what it says - And you probably don't want them?! ;) Basicly - earlier (before dedicated control surfaces arrived to the market), sequencers had a midi remote controls which could be assigned to some of it's functions, based on "normal" note on (or CC's or program change) messages. The remote could be normally disabled, and then enabled by sending a specific note on - defaults to C6 on Cubase. So Double note does just that - Sends first a note to activate the remote, and then note assigned to sequencers some remote function. Bye, Moebius

Hmm. I didn't check the datasheet - only "catalogue" info. online: "4/8bit interface" plus "standard" means HD44780 compatible controller - It's a Midibox ready! And for the leds - Â those have a current and a voltage drop rating . It's better to read: http://www.kpsec.freeuk.com/components/led.htm than trying to explain it - those blue ones need more power = smaller current limiting resistors. I don't know if DOUTs can support that power -- Yes, I guess. ;) Bye, Moebius

Well, TK you have your sight tightly on the horizon, right? Microchip seems to still produces all of it's PICs in DIP cases. And from my knowledge - The First development kit for ARM7 core was released a few months ago by Oxford Semiconductors. Miniatyrisation and integration provides us with more and more powerful devices. Yes, SMDs and SOICs, even some LQFP (or whatever manufacturer calls it) are still workable with good skills and using basic hobbyist equipment. Ball Grid Arrays are plain impossible. (But, Yes I wouldn't put a first timer to solder SMDs) This makes "pure" DIYing (whatever it is?) very difficult - more powerful devices, less components, more complex multilayer PCB's, which you have to order from a prototype factory anyway. There are several examples of this new generation DIY in several degrees: Miss Parker (as seen somewhere on our forum) - http://www.axoris.be/index.html Basicly a dedicated DIY DSP board for (Alesis DSP based) audio Fx. 2 sided PCB, doable in diy. Going to have "a dedicated software" for creating the new FX. 2181 EZ-kit lite based DSP - http://www.gweep.net/~shifty/death/ Instructions on turning a Analog Devices ADSP-2181 development kit into a DSP based Synth/ FX unit. Basic DSP SDK available from AD. Chameleon - http://www.soundart-hot.com/english/index.htm A commercial, professional quality open-ended DSP unit with own SDK to create new applications. Basicly what you see is, DIY is moving to the software side. And the hardware is moving away from the hands of a DIY. -- Remember what happened to synths after DX-7? Those old fashioned knobs disappeared - For nearly a decade! Why? So what's the future of DIY like? Hmm. It looks bright to me! You can have a power to create a synth, FX unit.. anything as powerful as build by a commercial company... You can have those chips already. (there isn't a law YET to prohibit selling chips to open source / DIY community - those com*unist basta.. now wait a minute, it didn't go like that nowadays, Â te*orists!) I'm hoping to see DIYish designs, yeah, maybe meaning semi-modular designs - With embedded uC/DSP , on a well engineered PCB, with lot's of I/O functionality. These would probably be running a kernel (RT/uCLinux, anyone) supporting HW devices. Boards from dedicated manufacturer, usable as core for hardware network firewall to... yes, DIY projects. Â There are already linux ports for Motorolas Coldfire and Analog Devices Blackfin. Your favourite POSIX compliant platform in a chip, What are you waiting for? Oh.. those cheapish boards to do development with ;) Maybe dedicated SDKs as well. Or in case of linux - many skilled people already having all the needed tools for developing for linux. Bye, Moebius p.s. T.K said: Sorry: Do you want to people to try, or to exploit your design in a commercial manner? Or is it just allowed? What is commercial then? Ripping of that 150E from a friend and doing debugging at the forum? Please, let us know. Bye, Moebius

OK, I was impressed by the block diagram at the link i posted. Yes. Registers on sid are updated with rate of that 1120Hz ;) So you could try MidiboxSID application as a basis of your project. Of course adaptation is a hard work, but at least you have some code to be recycled ;) Bye, Moebius

I'm neither ;) Just slowly absorbing information and concepts from synth DIY field... aah, feed my brain... ;) Bye, Moebius p.s. gbeth: Yes I've seen that. Now I started to think. Why don't you pioneer MB64+AOUT+SHX8 based control of a voltage controlled modules?! I'm more or less aiming at that direction.. I'm also interested in your experiences with PAiA Fatman ;) p.p.s. A nice information source for AY-3-891*: http://andercheran.aiind.upv.es/~amstrad/docs/ay38912/psgspec.htm

Hi, SIDplayer is another application, that can't coexist with MidiboxSID. And you don't download, but play SID's on your computer with PlaySID or other ASID protocol compatible player which then sends SysEx to control SIDplayer. Bye, Moebius

rocofolie: part number? Contact to a helpful Mackie service center? ;) Bye, Moebius

You seem to miss a point here. SN76477 is a self contained (mostly) analog sound FX chip. It's functions are controlled by a simple external circuitry. Different breed altogether. On the other hand, these old computer sound IC's need to be programmed, by pushing data to control registers. It's rather easy (?) to get those play notes. But just playing squarewaves, even with three note polyphony with envelopes, isn't really exciting.. But when those were programmed in computer games, the music programmer had his limited share of computer memory and cpu time. They used different tricks to make music as exciting as they could with these limited resources. Fast frequency modulations (Those SID trills/ arpeggios ;)), switching noise on/off (special fx, snare, hihat sounds) ect. SO, implementing a synth based on these limited resources, is even more difficult. Comp. music programmers had free hands to do whatever they could - building a synth, programmer must think - What should the user be able to do with the chip. --- gbert: Yes ;) (Just kiddin', really) Well, a control surface for softsynth's is really an improvement from typical point and click approach. I was excited at VSTi's for a moment, but then I realised, that I'm starting to follow certain patterns working with them. (And the sound - Well, If everybody sounded same ;)) Bye, Moebius

Off topic, and silly: Description of the psychoacustics by an audio engineer knowing his stuff: "Fixing things by turning a knob that does nothing, in front of a dissatisfied customer." (Any pro knows: "It lacks something" - syndrome) Bye, Moebius

Quote from the page: Industry-standard HD44780 compatible controller So no problem there - should work "out of the box". Even SID application defaults to having a 2x20 display = 5 visible menu items. Bye, Moebius

Hi, Check again MIDIO128 page at ucapps.de, and download mk_midio128_syx.zip. So, you have to configure midi -> DOUT relation in midio128.ini file, convert it to Sysex and send it to your midibox ;) In midio128.ini, list [MIDI_IN] sets to which midi event each DOUT will respond. (And checking it out, it just seems to me that C3 should trigger pin1 of a first DOUT. 1 = Â 90 30, meaning: 1= pin1 of a first DOUT, 90= note on event, 30= hex for 48dec, C3) Modify list accordingly, and remember note numbers are in hex. Bye, Moebius

"Quickly browsing thru a pile of electronic junk.." YMF262, got that too! (Tip: Pro Audio Spectrum) Bye, Moebius

OOokay ;) Well now, I'm going to split my ST in pieces, anyway (needing one of those MC6850's). One thing kept me from checking what sound chip it uses, was that I thought, that those aren't particularly interesting, just limited - In musical terms. Just that old "bleepy stuff". So making "bleepy stuff" interesting I suggest that you check out wavetable implementation from MB_SID. Using wavetables would allow "hammering those registers" - making very fast pitch changes ect. So count me in the list of people interested. Bye, Moebius

Welcome, Vercengetorex! And sorry, We can be a more or less harsh while defending Midiboxes DIY nature. But that's because we really want to scare away any potential commercial exploiters of a midibox. That's a real danger. (Think what a job has Thorsten done.. He could have gone the other way, and licence MB to some manufacturer.) Sephult: Well. I got an idea last night. Smash, Thorsten. What about writing a Midibox Hardware platform licence? That would be appended to each .pdf, and would point out exactly, what MB Hardware Platform is intended for, and what your allowed to do with it. It would clear things up a bit, maybe? Bye, Moebius

Or maybe a MIOS autoload check box, so after opening MIOS SysEx, it could be checked and when SysExBox sees Midibox sending a request for upload, it would start transfer automatically. Bye, Moebius

Well, One should ;) But usually only after "a funny smell at power-up" incident ;D Bye, Moebius

And which part of the hardware is under an open-source license? As Smash said: E.V.E.R.Y.T.H.I.N.G. here is copyrighted - Bloody quote large enough portion of my text and you're violating my copyrights. The copyright gives you that right for the fair use - Â at least here in Finland it approx. says: "A few copies.. for your and your familys private use" Maybe you should look at his post count.. Yeah, he's been very busy advertising here ;) But GUESS what? Let's see if you can point out who HAS a prior written agreement with a copyright owner to produce and sell these copyrighted materials.. I hope you got that right, buddy. Bye, Moebius

Hmm.. could be that those are custom made. But still I believe that like 4x40 HD44780 based displays it just has an extra enable signal. Bye, Moebius

Ok, If you don't have AINs connected to core, it's perfectly normal (and it indicates that you a core running, probably with MidiBox64 firmware ;)) to get random midi event. It's because A/D converter in PIC to which AINs connect tries to sample voltage, and it's not connected - floating pins - which in turn means random fluctuations: Random midi events. Same can happen if you don't connect pots to you're AIN board, and fail to "terminate" or tie unused inputs to ground level. Bye, Moebius So, Sorry. Nothing to do with AOUT..

Hi, This sounds very much A/D pins floating.. So you have AINs connected (that's good)? Â Any unused inputs on AINs should be tied to ground. Bye, Moebius /edit: Hmm.. Too tired to separate AINs /AOUTs.. ;) Fixed.

Hmm.. a bit sensitive subject at the moment.. But, Vercengetorex, you had the courage to come forward. I dug up a couple of discussions around this issue: http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=concepts;action=display;num=1060957086 Check Thorstens post, for his views on these matters: http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=misc;action=display;num=1056712913;start=15 Bye, Moebius p.s. "Say it out LOUD, I'm a DIYer and PROUD!"

Illogik.. Sorry, Been too lazy and scared to answer this kind of questions. :) OTA is definitely faster and more stable than LDR+Photoresistor (or Vactrol). With OTA's people even realise filters that are V/OCT.. but you probably have seen all that. But, what are you doing? Something to do with MR-808's suggestion with 808's bass drum? ;) Could you be more specific? Links: http://www.physicsenterprises.andrews.edu/diy_archive/schematics/oakley/super.html That Moog Transistor Ladder again. This time with resonance CV and bandpass output.. (and can be made to sound as weak as 303's ;)) www.ele4music.com - using web.archive.org. (Those old pdfs with schematics don't really seem to be online) Some VCF's with CV resonance.. I'm not sure, but I think that pitch control of a most the drum circuits floating on internet are not to be controlled on stabile v/oct manner, Bye, Moebius p.s. I am interested on this.. post any info you have!

This is just a MidiboxLC firmware update, that Thorsten is going to make after switching to Mac.. or probably to Sonar PC ;) (I love my Cubase, dammit!) To be more specific: I don't know If anyone's working on this. But if Mackie emulation is realised, and Universal runs on same hardware, it can be done.. know any .asm? Bye, Moebius p.s. This platform won't be dead for ages (Like Logic PC.. Oops, that wasn't necessary..)