ilmenator

Hey, you are the one building that thing, so you are in control. Build it in such a way that it can't fall off! Simple!

Can you put a link to the page you are referring to? I don't seem to find the page you are quoting, maybe it is obsolete?

Yes. As always in troubleshooting, everyone assumes you are not using an outdated OS version. The same goes here. You should update to the latest OS version. Best, ilmenator

The LPC17_CORE module is dumb without the LPCXPRESSO, as the latter holds the processor. So if you want the second core module to do something, you need to stuff the LPCXPRESSO.

Great find, thanks - the schematics at the end of that PDF also show that center taps should not be connected! In my experience, tightening the package mechanically from outside does not work, as it will always come loose again. I tried that. Rewinding the transformer could do the job, but without the proper equipment it is extremely difficult and even dangerous, because you easily hurt the insulation lacquer. De-coupling the transformer from the chassis could reduce the noise somewhat, but will not eliminate it. I'll detach it from the chassis and see/hear how much noise is left. Thanks for sharing your ideas!

I have a Kurzweil K2000R that has a problematic transformer: the damn thing makes a lot of noise, as it is vibrating and the whole chassis is resonating. A little as if there were 2 10.000 RPM SCSI harddrives running inside... So I am looking for a replacement. Basically, the secondary outputs are 2x 14V and 2x 6V, with a center tap on each. I find it hard to find a single transformer that fulfills these specs, but I wonder if I could use two separate ones? Big question: Would I have to connect the center taps of the two secondaries to make sure the zero Volt potential is the same for both power sections?

Hi, and welcome here! Go through the "MB Hardware Platform" section over at ucapps.de and take a look at the modules that are available. That might give you some ideas of what is possible with this platform. Best, ilmenator

Oh sorry, then my hint was not helpful at all. I have never tried this, so I cannot comment, unfortunately. Good luck with this!

Sounds a bit like MIOS Studio is listening on the USB MIDI, as it detects the LPC. For the Core 8 you would have to refresh the device list and select a different MIDI I/O (the one that the Core 8 is connected to). Well, maybe that is too obvious? Edit: Or are you trying to use the LPC as a MIDI interface to connect the Core8 to?

Prima! Da war der alte Elko aber wohl schon vorher kaputt... Übrigens ist die Größe deiner angehängten Bilder etwas problematisch: auf dem Thumbnail erkennt man nix, und auf der großen Version auch nicht weil's über mehrer Bildschirmbreiten geht :unsure:

Vielleicht zieht dein Display (bzw. die Hintergrundbeleuchtung) zu viel Strom? Versuch mal, die Hintergrundbeleuchtung abzuklemmen oder ein staerkeres Netzteil (das mehr Strom liefern kann) zu verwenden.

What, you're only gonna drink two beer a month?? :tongue:

Well, as always in DIY: your mileage may vary :flowers:. Creating your own board to mount the faders onto will be quite costly, as the board is going to be large. Also, I would assume that the one in the main unit looks different from the one in the extender units. So that will be two different design then?

I am not sure if the clean layout of the original hardware alone really justifies the effort of adapting MIOS to work with the components on the original board. I do not have a lot of experience with motorized faders, but from what I have seen in the schematics a drop-in replacement would probably mean that you provide analog inputs to read the fader positions, digital inputs for the touch sensors, and analog outputs for the motor control voltages (CV). All that sounds like far more effort than simply using one or two MF_NG modules. Also, you would have to do some coding to get the system running - but you would not benefit from any updates TK would provide (think bugfixes or added functionality), because you would have a one-off custom solution. If it is difficult to mount the faders properly without the original board, there is always the possibility to cut traces on the original board. Best, ilmenator

Is that a unit with 60mm or 100mm motorized faders?

Looking at the frontpanel I would suggest that the encoders and pots are too close to each other. It will be a problem to change values without accidentally touching neighboring encoders/pots. Unless you are using a pair of tweezers to grab them...

Sounds very interesting! However, I would not consider porting MIOS to the Propeller. A much smarter move would be to simply have the SIDcog based SID emulation act as a drop-in replacement for original SID chips. This way you'd be able to focus on a much more "limited" and self-contained project. I would see your project rather as an alternative to the SWINSID approach. Best, ilmenator

Where are you located?

Just a quick update as already mentioned over at Vimeo: I got another logic analyzer and the RAM card section is up and running again. There is still some problem in the PCM card section that I have to work on.

Aber nur wenn die DAW die höhere Auflösung auch "versteht". Für Standard 7-bit MIDI Controller Daten ist die Hardware-seitige Auflösung egal - es kommt also darauf an was die Software kann. Für die gewünschten 64 Potis braucht man nur ein AINSER64-Modul.

SmashTV's MIDIbox shop has plenty of them for only US$ 11!

Hallo und willkommen hier! So etwas zu bauen ist technisch kein Problem. Die Lösung existiert bereits, du brauchst lediglich zwei Module aus der MIDIbox-Welt zusammenzustöpseln und gut: LPC-17 Core Modul und AINSER64 Modul. An letzteres werden dann 64 Potis angeschlossen. Du brauchst keine einzige Zeile Code selbst zu programmieren. Dass dir jemand hier soetwas bauen wird bezweifel ich allerdings. Dieses Forum widmet sich dem Selbstbau, und das heißt eben wirklich Bauteile löten usw. Du spielst Cello, also hast du geschickte Finger. Auf welcher Seite ein Lötkolben heiß wird wirst du auch wissen. Und du kannst davon ausgehen dass du jede Menge Unterstützung beim Bau bekommen wirst. Und das Gefühl mit einer selber zusammengebauten MIDIbox coole Musik zu machen ist durch nichts zu ersetzen :-). Grüße, ilmenator

It's a bit hard to defy the laws of physics... if the darn thing is too large to fit in there then what are you going to do?? Use larger buttons or try a 3mm LED variant or see if you can put in two SMD LEDs.

For two color LEDs you need common anode or cathode types, 2 leg bicolor is not supported.

Thorsten, looks like you tried Laen's PCB service - nice color on the board :thumbsup: ! Best, ilmenator