Altitude

Outstanding!

He decided to focus on his Open Music Lab stuff. Plenty of knowledgeable ppl still there..

Question: I'm thinking down the road when I get to my SEQV4l and have not been able to find info on the translation of the pinouts between the core32 and LPC core. For example, Gates 7,8, and the sync24 stuff is all on J5C which isnt on the LPC core *edit Should read the hwcfg file more often

Cool design, I'd make it double sided and stick a SDcard socket on the underside

To be fair, MMM on the x0xb0x forums IS a Mode Machines employee and does provide support for everyone. In fact, he's probably the most qualified person to do so since Guest left so they (or he is) making an effort to rectify some of the animosity there. That sid box is hideous though, curious whats inside and who did it. Wish them the best finding good SID chip sources..

Lamouette, Post a pic of your ribbon cable. Like I mentioned in the PM (and worth noting here for everyone), those Optrex displays have the pins oriented on the FRONT of the LCD, if you put the header on the back and use a 1:1 pinned IDC cable, it will be miswired and you will blow the back light instantly (i did it on my first one), check the 16pin header connections with a meter for continuity between each pin of the core and the display and make sure they match up before firing it up

I have some older core8s if you want them just pay shipping

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Its all solder cup. Simple as it gets. I like these since the panel ones are SUPER shallow so they really dont stick out. You can get multi conductor cable for these or just slum it and use some CAT5E round

Are you looking to DIY cables/connector recommendations or something more off the self? We use round Conxall ones at work for everything and they are pretty nice. You can get them in a bunch of different sizes and pin counts and they have a nice bayonet action http://www.switchcraft.com/Documents/conxall_catalog.pdf

I was looking at their full line, dont see very many 15/-15/5 supplies and something like that is perfect for an analog synth project. Hopefully the 100kHz switching frequency will be high enough to be inaudible

Wow, those look nice, make sure you let us know the results since a +/-15V with a +5V is pretty cool

You can get +/- DC from a AC source with a half wave rectifier but you wont be able to get +/-12 from 9VAC though..

Yes. Thats it.

I have some of those R4 ones that look bunk but I tested them all and they seem fine..

If you are running a core32 or LPC, those will already have 3.3V via jumper selectrion (and those supply +5 to screens). Only the PIC base core that runs at 5V needs the 3.3 vReg

its milliseconds btw, its in the readme in the midi benchmark app folder and here:

Its a combination of USB, host, shitty drivers on sub-par hardware. I did some studies when I had a number of different interfaces to test with a Core8 as a measurement device and here are the results: (TS= Timestamp on, DS= Directsound) The RAW is a physical connection from in to out (which should be the length of the midi msg), the midiox test is a basic software loopback You can see how much everything changes with the host as well as the driver. Most interesting though is how the Midex (which was a $450 interface at one time) degrades with more data and how the whole "LTB" (timestamping) is utter bullshit

That is a ridiculously too big PSU both size and power wise, you will need a case as big as the PT10 to house that thing. My MB6582 is stuffed to the gils and has backlit knobs and that draws barely 1 amp, that thing has 5A on the +5 rail alone (which draws about 150 mA on the MBSID) this was my solution:

Sweet. Thanks!

This is my next MBHP build so be prepared for a barrage of questions since I am planning the same sort of device. I have a pactec case thats a perfect match for the PT10 (width, length, color) that I am planning on sticking the VCF/VCA modules as well as the bipolar PSU. Here is one for starters: I assume you ran one NG per core? Can you possibly outline the connections and signal flow?

why is it that every time i look at this thread i see "gallery tities"

I agree with this statement. Function > Fashion

Sorry, forgot about this thread Nothing. Just use a 7812 in place of the 7809, same wiring You could, but it would be a bit of a waste of $$ since all you really need is a DC adapter that has enough juice to power the +12V regulator. You can use a linear one (7812) Maybe. If its pretty small its probably a SMPS which may or may not be fine. Test it with load on another circuit and see how it behaves I got it from Mouser. Its a drop in replacement for a 7805 and no heatsink is necessary (it does not really get hot at all). The existing caps for the 5V rail are probably overkill but I left them in anyway. It makes no noise that I can hear at all, it switches at 600 kHz so that is well outside of anything of concern. Here is the doc: http://www.ti.com/lit/ds/slts059a/slts059a.pdf I have now used this thing in my MBsid, MB808 (which was REALLY bad thermally, 18V input to the 7805 BIG heatsink needed) and my 9090 (which was almost as bad as the MB808, 15V input) and it has worked perfectly in all 3 cases. I mentioned this in another thread but I'll repeat it here also: These are 85-90% efficient regulators vs 78xx which are about 55% efficient. I did a test to compare the performance of these vs a 78xx by generating a 1.5A load (bank of LEDs) driven by the PT78 and a 78S05 (the 2A one) at varying input voltages. I had no heat sink on the 78S05 and that thing got too hot to touch in seconds at a low input voltage (7.5V) and went into thermal shut down at anything above 12V (and was scary hot). The PT78 was barely warm to the touch at 18V at the input at its maximum load (1.5A). I was sold on these after that