jackchaos

"The minimal error log I've been able to get is a complaint about the expected "END" line in the main file" Were you able to find out why you couldn't compile with that error? I get the same thing without any changs to the source.

I'm looking for Modular Momentary tactile buttons with and without LEDs that can be grouped together in a single row panel like the photo links suggest. http://www.bluesynths.com/1Tests-e/Elka-Synthex.html Look at the buttons on this site. They are grouped together in a plastic housing that is somehow snapped into the rectangular hole in the aluminum panel. I've looked through the Mouser site and catalog and I see no buttons like this. These would be perfect for my project, which is currently in the prototype stage. Does anyone know where I can get these or other modular, momentary tactile buttons with and without LEDs that can be grouped together in a modular panel like the photos above suggest?

SmashTV 3 questions. -- The output pins on your AIN module has two rows, unlike the AIN modules shown on this site. 2 of the pins are marked Vd (Power+ I guess)... what are they for? Why are they there. -- Also, I need to 'ground' all of my unused pins in the AIN. A0-A7 for the last 3. How does everyone go about grounding the pins. A photo example would be very helpful. If not, a good description of how one would "ground" these pins. -- What does Vss and Vdd actually mean. I know ones ground and the other is +. What's the significance of the "ss" and "dd"? Thanks

I'm looking for simple curcuit boards like these: http://ouwehand.net/~peter/lcd/images/lcd/lcd-pic16c84.jpg and http://69.56.171.55/~midibox/midibox_fm_photos/13.jpg Big enough to mount front panel components. I see a lot of midibox project use this but looking at the parts in the catalogs like Mousers' and Digikeys etc... there are too many to choose from... and thier prices seemed a little high. Can someone recommend a place in the US where I can order simple, inexpensive circuit boards? Or a part number from someone?

...nevermind. I've discovered the "view last posts" feature.

Jorge Your case looks great. Do you have a description of it and how you made it posted anywhere?

eufex: Then it doesn't matter... unless you plan on buying pots and encoders from SmashTV?

Smash I made another attempt to place an order and I got stuck on the Pots again. You have 2 different kinds of pots of different sizes. What's the difference? I'm forced to make an uninformed decision with the pots and I don't know the difference. Can someone kindly explain why someone would buy one over the other? Thanks!

If I'm following you guys correctly - all D shaft pots should fit a knob if the knob is described as having a "D" fitting? What do I need to look for when matching knobs with pots? P.S. based on the POT's description, how big should the hole be drilled to accomodate it? -Patrick Manderson

I'm looking at the pots on Smash TV's site and I have a couple of questions. ITEM 19b Potentiometer High quality Taiwan Alpha Potentiometer 10K Linear taper 1/4" x 3/8" Round Shaft Specifications http://avi.dezines.com/mbhp/images/potDatasheet.pdf How big does the hole on your panel have to be for this pot? I'm guessing that the 1/4" measurement is for the shaft where the knob will be seated on, and the 3/8" measurement is how big the shaft is where the threads are. The hole would have to be at least a little bigger than 3/8"? Are the pots meant to be screwed into the panel with the panel between a flat nut and the lower part of the pot? Also. When picking out knobs, would I have to make sure the inner part of the knob is compatible with a 1/4" D shaft? He also has a: 10K Linear taper 6mm x 15mm "D" Shaft pot... Would this require a different kind on knob, or are all D shaft knobs interchangable? Patrick Manderson

Raphael "No, DIN is the opposite of DOUT" I pasted the wrong item... sorry! The quote said "40 DINS". I'm trying to interpret what he means. I don't think he means 40 DIN modules... just 40 DIGITAL INS. I spent some time reading more on it last nite. I think I understand. Thank you! "-I would like to use 2 and 3 way toggle switches for a couple of functions. I'm guessing this would behave exactly like a single switch except for the wiring. Just wire each switch position (don't know how to say it in english) to a different DIN input." The reason I asked, because all the buttons I see on everyone's MIDIBOX photos are MOMENTARY buttons. A 2 or 3 way switch would not be MOMENTARY... right? I'm trying to make the destinction.

I'm trying to figure out what I need but I'm not sure how many of which do I need to get. I'm putting together a parts list but I have a question. A quote from the MIDIBox64E description says "A common MIDIbox64E, based on the historical MIDIbox16E design (see picture above) requires 40 DINs: " 40 DINS? Does he mean 40 of these? From SmashTV Website: 08 DOUT Kit (Full kit) Includes PCB and all parts that mount directly to the board. Parts List http://avi.dezines.com/mbhp/mbhp_dout.html -The MIDIBOX64E also supports analog pots. Does that mean I'll need to buy an AIN? http://avi.dezines.com/mbhp/mbhp_AINR2.html -How many pots can 1 AIN handle? -For switches/buttons, Do I need to use DINs or AINs? -I would like to use 2 and 3 way toggle switches for a couple of functions. I'm guessing this would behave exactly like a single switch except for the wiring. Thanks in advance Patrick Manderson

Steven The Matrix is one of the very few fully analog synthesizers controllable with MIDI. http://vintagesynth.com/oberheim/mat1000.shtml The unit sounds like a dream but the sounds are only editable with a computer... no front panel editing. I want to build a programmer for it that would resemble some of Oberheims earlier products like: The Expander http://vintagesynth.com/oberheim/xpander.shtml and the OB-X http://vintagesynth.com/oberheim/obx.shtml The Behringer BCR2000 isn't very helpful with programming older synthesizers but it shines with virtual synths running on your PC. I am however able to get all the editing parameters working by Manually altering the BCR's SYSEX dumps with a HEX editor. My Challenge at this point, it determining how I want to handle specific event like I mentioned above: a button that would rotate between 3 or more values (SYSEX strings) an endless rotary encoders transmitting 6 and 7 bit signed values with center detent at value of zero a set of buttons would need to sum up their bit values for the and others.

Building a knobby programmer for my Oberheim Matrix 1000 Synthesizer Module I've been doing some preliminary research by 1) buying an Oberheim Matrix 1000 from eBay for $200 2) pouring over it's MIDI specification and owners manual and obtaining manual to an Oberheim Matrix 6 3) buying a Behringer BCR 2000, hacking it's SYSEX dumps with a HEX editor, learning what it's like to have knobby control over the Matrix 1000 parameters and taking notes I have a few more steps to go towards completion of my project which I call: Chaos Matrix 1000 1) introduce myself to the MIDIBOX community 2) inquire advice from more experienced people in the forums 3) order the necessary electronic components for prototyping 4) *develop application, make adjustments to MIDIOS 4) **determine the necessary components and design a front panel layout 5) fabrication of aluminum panel and silkscreening (*notes: I have experience with c, c++, c#/java, perl) (**notes: I see no reason to take the time and energy to put something like this together, just to slop it up with ugly components and giving no thought to the quality of the enclosure. I would like for the enclosure to resemble something that Oberheim might have produce in 1978-1984. A cross between an OB-X panel and an Xpander panel) At this point, I have a few questions about which HUI to base my project from and whether if they have the required functionality I've been able to determine at this point. Questions: 1) Considering the number of faders, rotary encoders, momentary buttons and switches I need to cover all the parameters for the synthesizer. I'm sure either the MIDIBOX64 or the MIDOBOX64E would suffice as a base point, but I'm sure there are differences between the two that would make one much better than the other. Which HUI would you suggest I focus on? 2) Most the other applications used with the MIDIBOX64 and MIDIBOX64E are for MIDI fader/volume control. My requirements would obviously be a lot different. Here is a list specific functionality I would need. -a button that would toggle between 2 values (SYSEX strings) and a set of LEDs that indicates the state of the button -a button that would rotate between 3 or more values (SYSEX strings) and a set of LEDs that indicates the state of the button -an endless rotary encoder transmitting 7 bit signed values (for -63 to +63 parameter values) -an endless rotary encoder transmitting 6 bit signed values (for -31 to +31 parameter values) -a set of buttons would need to sum up their bit values for the same byte -a button that would transmit a SYSEX string based on the value of another encoder (save current patch buffer to a memory location) -a button that would transmit a SYSEX string after waiting on user input for another value. This may require the use of a numeric keypad. This may also be optional. -a button that would transmit a number of individual SYSEX strings (patch initialization, zeroing out all the modulation matrix slots etc) -I might also require that some knobs/buttons/switches have dual use. the need to page different functionality for them by holding down another button would be useful. -I would also need to ability to adjust the update interval of the rotary encoders. When turning the encoder, I wouldn't want to send SYSEX data no faster than 10hz. These are all the required functionality I can think of right now. I'm sure there will be more to come. 3) Considering the list above, some changes to the software will be necessary. How much of thie required functionality is allready there - only requiring the configuration changes? How much work would it be to make the necessary changes? I hope I'm not asking too much. Thanks in advance for your replies. -patrick manderson