Peake

Oh, good news! I suppose for the price that I could overlook the tactile aspect. For a while. Man, these are NOISY. That could become aggravating FAST.

I don't remember which ones provide a "start" trigger input... It's not just "8-bit". It's =that= 8-bit. The Linn etc. are companded, as are the early MPCs. It sounds better than straight 8-bit. I suppose the answer to this question is to simply purchase an MPC, as it can fire multiple voices on the grid (no MIDI timing evil, there).

I've just today received a batch of these from goldmine. I was going to wait until I could source the caps without a $15 handling fee ($#_(*_% postage charges!!!) before saying anything, then saw this thread. Note that these have a sharp, clicky feel, just depressing the edge of the switch. They aren't soft-feeling. They click on the down press and they click on the release. Plastiky-sounding. Shouldn't be a problem when the beats are going, but the feel may be a tad off-putting. Prof, I will likely have some funds to do another order in a few days or so, and I'd gladly trade shipping services (heck, the clear caps might be cheaper from EU if you bought them and sent them in a padded envelope, than if Newark were to import them). It certainly wouldn't cost more than a few dollars to send the switches the same way.

Syracuse Semiconductor on ebay USA have two potential deals: 100 TDA1543 for $350, or 500 for $500.00. Edit: Both Digikey and Mouser have the PCM1725, both at $1.82 for 100 quantity, but both are SOIC. Mm, 14-pins, too. Choices... Sorry to post that here; move or delete if appropriate...if I had the money, I'd just buy it and pass around the goodness.. Edit to crisp's reply: You know how this goes; I'm hoping that someone will buy bulk for the inevitable 8 chip synth... The SwinSid sounds a bit less chunky than the SID, and has a silkier high end, perfect for polysynth applications. Congrats to the designers and developers!

I'd build a few channels of DIY sampling IF it were true to the compansion scheme and SR/Bit depth of the Linn drum or LM-1, or perhaps Oberheim samplers (but could sample, not just play back. Being able to trigger them via a CORE gate set would be nice, and especially to have that edgy, full-bodied timber, that nothing modern can touch.

Thanks, that's what it looked like (to a newb)... Thank you very much!

I'm reading this over to see if I'm missing anything- You wrote on page one, "also, i left out any headers that are not for midi i/o, lcd, power, din, dout, and aout." So obviously you use your own DIN and DOUTs with it... I have an AOUT_NG for my SEQ build, sounds like you've included it in the design and headers. Nice. Your PCB will support a traditional SEQ3.2c build, correct? I want to make certain because you mention your own custom build requirements... Cheers!

Oh man, how'd I miss this thread? Good work. I'm in the middle of building a SEQ, but could always use what I've assembled for other MIDIbox projects... I look forward to seeing it become a reality and congratulate you on your work.

Did I mention that I've also seen gurus write that they use them successfully? ;D

In other threads I've seen the gurus write that "Switching (power supply) is no good"...

Pardon my two cents...correct me if I'm wrong and I'll stop "helping". This might work. L78S05CV, IC REG POSITIVE 2A 5V TO-220 (and a heatsink like Smash TV sells).

Cool... "the 820pF value for the fourth cap is suggested in the datasheet and used in every implementation schematic I found out on the net." Thanks, I hadn't checked the Mono/Poly etc. Back to the 820, and my desire for a Moog 904a or three ;D I really look forward to the dual board!

I have an _NG waiting for the completion of my SeqV3, and I'm in love that it's offered at all. I'm not complaining! (Or am I?) I didn't know that it could be chained. What I've read states that no MIDIbox projects currently support them in groups, or the X8 S/H board at Smash's site. "SHX8 Module (expands AOUT Module < 64 CV Outputs) uCApps (expired, S&H chips are discontinued/obsolete)" Does turloid also seek the bluest possible skies, here at the fora? Oh yes, I want fries with my order please. Don't take me as ungrateful; MIDIbox projects are an amazing initiative and I'm already addicted to them. Thing is I'm short on cash and am selling my Encore Expressionist to fund MIDIbox projects. I don't remember its resolution but it's very good. I'd like to keep it but that's not possible, hence some discomfort on my part. I hope that it's not souring my posts; let me know if so and I'll keep an eye on that. The smoothing demo regarding 7-bit CCs still has a bit of zipper; I don't know the smoothing setting that was used, and I'll suppose that adding a cap will further smooth any outputs. I'm mostly interested in using it to output velocity for drum sequencing, mostly, but somewhere along the line wish to use three or more CVs to simultaneously move around my Technosaurus Triple Resonator (and the two other filters in that system) for formant control. To see if I can shape words or syllables. Two filters are enough to do simple formants; Zon Vern Pyles, an excellent sound designer, demonstrated that contrary motion on two filters provide the "ee" through "ahh" vowels. I spent some time on the Alesis Andromeda design and development team and we ended up using NRPNs for the modulation controllers: Wheels, ribbon, knobs, etc. You can get used to that sort of thing... I can't tell if the AOUTs support NRPNs. I could always use a Pitch Wheel and it's greater resolution as the controller...it's about 4K in each direction, IIRC. I -AM- asking for fries with my free lunch, aren't I. Sorry gents, I'll keep my "good" ideas to myself and be gratefulfor what is in front of me. Edit: I've since found the Expressionist to be 16-bit. It has a user-settable LFO that can be introduced into the Note output via modwheel, which is very very nice to have, in addition to the pitch wheel. I see that some MIDIbox projects support NRPNs. Great! I'll hope and pray for future software support of cascaded AOUTs...

The voltage the AOUT sends can be 0-10V. http://www.midibox.org/dokuwiki/aout_ng The range is stated as 10V maximum =range=, and that range can be shifted around via the configuration to be bipolar, specifically for controlling external filters. I don't remember the exact offset possible, it was something like -2V to 8V. I don't remember the page I on which I found the information. Edit: Didn't know the C64 voltages, now I do. Anyone smarter than me, please chime in ;D

I've just started playing with a concept- making that fourth pole have the same cap value as the other three. It did significantly change the overall range of the circuit (shifted it way down) and the resonance, with the trimpot at maximum, only self-oscillates for a tiny region in the top octaves. I haven't checked much yet to confirm/deny that this is a step in the right direction or not as I've got multiple projects going at once. This -may- provide for a slightly darker, smoother sound, if the last pole is actually offset on purpose, ala' the stories I read about the TB303 filter (IF IT IS SET UP LIKE A 303 FILTER, WHY CHANGE IT YOU BASTARD, I can hear the shouts now). If the last cell is indeed offset upward from the other three, then it would produce a slightly brighter, airier response. It would make the filter darker and audibly deeper-cutting, harder filtering, to then match all four poles, ala' the Moog 904a, etc. Might anyone know more than this? I don't want to derail the very exciting thread, I'm just poking around hoping for possible improvement/variation.

Thank you very much for all of your answers! A single 5V 3A regulator sounds just right, used from a single transformer tap for all 5V duties, with 15V bipolar for the AOUT_NG.

http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4884/t/al Found it searching for 16-bit compatable, drop-in replacements for the DACs used in the AOUT and AOUT_NG (didn't find any, are there any?). A boy could dream of the programmers around here becoming interested in a MIDIbox CV with 32 channels of 16-bit resolution. Just saying... ;D Unfortunately, it's TINY. 10mm or 12mm footprints, with 64 or so pins. At least shipping costs would be absolutely minimal!!!

Hi, thanks for testing those out, I've had my eye on them as well. I note in the datasheet, page 8, that they draw some 413ma of power. Each. That's 826ma if you use a pair, such as in the SeqV3. I note: "Restriction: the 7805 gets very hot when it delivers currents above 500 mA, so only core modules without backlit display like MIDIO128, MIDImerger, MIDIfilter should be supplied over this port." -ucapps, CORE page. This requires a separate power supply for the displays? I have some 830ma 9VAC supplies for my CORE (hooked one up already, output tests 5V just fine). mbseq_v3_interconnections.pdf simply shows two LCDs wired directly to the CORE. I'll suppose that a separate power source must be used for the LCDs, and the CORE only drives other PCBs without LCDs, as stated. I've searched the three sites and don't see an answer. The SEQ page says, regarding hardware requirements: PSU: Wall adapter (Power supply) 9V / 500 mA. Smash TV's excellent site says regarding CORE power: "500 mA is recommented, especially if a backlit display is used" http://avishowtech.com/mbhp/mbhp_coreR4d.html Am I missing something? That has happened to me before. ;D Sorry if this is a newb question and I'm missing an important page of information. I've read the "FM262 First DIY Project" thread and will have to build a bipolar supply for the AOUT_NG board I'll be using with the SEQ, so should I plan ahead and build one with more than 1 ampere for the 5VDC lines (as well as having the 15V bipolar aspect)? Wiring the transformer raw 8V or so source to both the CORE and a separate 5V regulator for the displays? I've searched for LCD, wiring LCD, power supply, etc. I'm trying to be good and read everything that I can prior to asking questions. I'd prefer to simply be able to build a unit without having to ask anything, but... Link to display datasheet: http://www.goldmine-elec-products.com/prodinfo.asp?number=G16610

Great idea! I love that kind of LED and would participate in a group-buy.

Excellent. If you test them individually, I'd definitely be interested in some. Thanks!

Hello! Do you have a web site or any online history (ebay, etc.)?

I wish he had the Cosmo Moog Modular knobs. Those are $4.00 each from synthesizers.com. But 808-style knobs on an MB- That's good stuff!

Looks like I'd have to adjust my price downward: http://tinyurl.com/6zusn7 and HonkKongSuperseller has similar lots of 100 for what I'm asking. Oh well, if you want any of mine, just ask and we'll do something to make you grin. Regards.

I helped to define it so it's not so intimidating to me. However, in attempting to digest the capabilities and configurations of the MIDIbox, I am learning how newbies to the A6 must feel. The A6 knobs are nice but they're not solid plastic. That would have been -very- nice. I prefer Moog (Cosmo) style knobs (dot for pointer, not line) but they're $4.00 each from synthesizers.com and are only available in large quantities from Cosmo!!!

Hi, that appears to be the same item. Thanks! The legs are like that and must be straightened to fit into perf board. However, mine are not 6mm. I have some Wima 5mm caps and they also fit the three perf spacing, but the body is a tad wider than these switches. If however these are the same thing, I'd sell batches for 0,8EU each, or 12 cents US. Shipping in a padded envelope would be something like 1,5EU or 2.50 US. That's $7.78 US or 5EU for a batch of 44. You'd have to find buttons for them yourself. Paypal would be an extra 3% fee. What do you think? Anyone? Note that these are a bit wobbly. The cap the buttons affix to have some play. If you can find an Andromeda, check any of the buttons and that's them. It's only really noticable if you hold them down and move them around.