moebius

Hi, This means building 4 MB_USB modules and using commercial USB Hub hardware to connect those to the computers USB port. But, as doc said It's not the cheaper way than buying a multiport midi interface and MB_USB module isn't exactly for the beginners, as Cypress USB chip is surface mounted component.. Bye, Moebius

I'm interested.. (I hope that things work out, and I could come. There are some issues, like that I'm from Northern Finland) BUT - Please, all of you: Show your interest HERE! Bye, Moebius

I'm interested.. (I hope that things work out, and I could come. There are some issues, like that I'm from Northern Finland) BUT - Please, all of you: Show your interest HERE! Bye, Moebius

Warning sign

Hi, ;) You probably made a short circuit by measuring between +5v and GND.. if multimeter and transformer survived, no harm done.. As doc said: You put the meter in circuit path, by desoldering regulators Vout pin, and connecting meter between that and boards +5v track. Bye, Moebius p.s. And for the debugging, you could disconnect LCDs backlight, and see if it helps. (dropping mucho overall current)

Hi, Fractal: Grrr.. That's what there exactly is in PIC header. ID flag that sets baud rate between midi/COM at boottime. By reburning PIC with MIDIbox-to-com flag set, your midibox will always boot with COM enabled. Sephult: Grr... Most MIOS based midiboxes can already switch between MIDI/COM interface.. just check MIDI setup menu.. so you don't have to burn your PIC. (And there are reasons why both can't be connected same time..) Bye, Moebius

Hi, Fractal: Grrr.. That's what there exactly is in PIC header. ID flag that sets baud rate between midi/COM at boottime. By reburning PIC with MIDIbox-to-com flag set, your midibox will always boot with COM enabled. Sephult: Grr... Most MIOS based midiboxes can already switch between MIDI/COM interface.. just check MIDI setup menu.. so you don't have to burn your PIC. (And there are reasons why both can't be connected same time..) Bye, Moebius

Hi, This is more likely to be noise coming out from dusty/ worn (cheapish, carbon track) pot.. you can try to clean it with contact cleaner from electronics store. Yes. For question number 2: I think that you can use switches with MIOS (for something), but old limits are gone (using bankstick.. but only one internal bank on MB64) so bank switching concept is changed. Maybe you want to study bit more about MIOS based version, and change those switches to buttons (and fit some more ;)) Bye, Moebius

Hi, This is more likely to be noise coming out from dusty/ worn (cheapish, carbon track) pot.. you can try to clean it with contact cleaner from electronics store. Yes. For question number 2: I think that you can use switches with MIOS (for something), but old limits are gone (using bankstick.. but only one internal bank on MB64) so bank switching concept is changed. Maybe you want to study bit more about MIOS based version, and change those switches to buttons (and fit some more ;)) Bye, Moebius

Kayzer, I was just wondering, it's straight out of a MIDIO128 page under The Hardware topic. And seems like false advice. As (normally) when button is pressed, contact is closed and input is pulled low. So I think that serial register chain should already be terminated by last pullup resistor (R33-R36) connected to serial input of the last chip installed (pin10). (I think that grounding it makes PIC think that all further buttons are pressed) Hmm.. like it's being only button read.. directly by serial input grr ;) Check the connections around third chip.. try to swap 3rd chip to old (not the broken) one. Bye, Moebius

"It's only important that the last input shift register is terminated with ground level (0V), so that the firmware doesn't recognize invalid values." ???

I'm not sure, but I think that LC needs it's own dedicated midi port. So you can use LTC, to connect LC and use midi port for keyboard, or get another midi interface.. Please, correct if I'm wrong... Bye, Moebius

It seems that GPutils is not completely compatible with Microchip assembler syntax, I think ;) Bye, Moebius

Well, googling helped: Try: http://www.ac.ugal.ro/staff/ckiku/software/picdisasm.htm Bye, Moebius

Yes, doc :) I want to make some points clear: Ground lifted MEANS: NO ground connection on AUDIO cable! And definitely ON mains lead -> case -> internal electronics. reason: If two audio equipment are connected with a ground point from MAINS, audio cable ground can cause hum from a ground loop. reference: http://www.epanorama.net/documents/groundloop/groundlift.html YES, metal case SHOULD be connected to the MAINS ground. But when using transformer with a central tapped secondary (ie. bipolar supply) Â (YOU MUST KNOW WHAT I MEAN), with audio equipment, then you might not want to connect that to the MAINS ground, but let it get it's ground connection from a audio line. And some reference to the safety regulations: http://www.epanorama.net/links/safety.html --- You must know what you're doing. If not, just use a battery pack! Bye, Moebius p.s. And OF COURSE: If you're using internal power supply, you MUST use a FUSE with correct rating!!!!

Well, It's a  "power supply bypass" cap.. so you can try a 'bout  any value. IT won't fry you PC.. (parallel port is buffered, anyway) Bye, Moebius p.s. Do you have some "electronic junk" -  take it apart and you will find right cap. ;)

Well, Here in Finland, we have a plastic specialist company called Vink, (www.vink.fi). Of course they mostly do b2b, but at least here in Oulu, they serve private customers nicely.. (got some sample materials just by asking. They are willing to cut just 2 pieces for a 19" rack front panel) Bye, Moebius

So, Where are you from? Bye, Moebius (Who has not build a midibox yet ;))

Good ideas.. I was thinking of a conductive metal rod (in insulated spacers) parallel to fader and a spring (like ones found from a certain ballpoint pens). Small portion of one side of the spring is twisted 90 degrees, and metal rod is put through that part, other end of the string is twisted around faders shaft. This should be made with a tiny tension, so contact is secured, but doesn't affect faders movements. Then the rod is connected to the touch sensor input ;) Bye, Moebius

That's the way to do it. Bye, Moebius p.s. I think you have thought of a alternative method (fitting /soldering IC pin /header pin same time at the PCB holes with bridge wire from the other side).. you CAN try that also ;)

pilo, and everybody else, we are learning from each other! ;) And probably having some fun.. 79xx have V input at the center pin, connected to case (metal).. (Only if I knew why?!) Bye, Moebius

Yes, I think it is. I think that old Casio has a diode matrix keyboard, so check forums for MIDIfication topics.. But at least for now, you need another core for that. (and not velocity, thought) Bye, Moebius

arumblack: Really, only one path to the ground point is needed.. whatever it is. (Electrical potential between the players guitars ground point and the stage caused this.) Bye, Moebius

Well.. This is JUST a thing I am wondering about. If all the equipment are provided with grounding (or "grounding", like in my case, but anyway same potential for "ground") from power, and from audio connections.. forming a ground loop. What to do? Nothing? Making "ground lifted cables" (no ground connected)? DI boxes (with transformer) boxes with a "ground lift" option? Bye, Moebius

Mickey I have a growing respect towards LIVING electricians ;) A friend told me that as he was with his father, who was doing service/ installation work at a big factory, how his father insured that cabling was powerless.. by just swinging a knife with insulated shaft, cutting through cable carrying 220v.. and same time checking which fuse that line was connected.. I did another check at my cabling. It's still 110VAC between ground point of the extension cable and the radiator, even without anything connected, so it must be parasitic inductance. Bye, Moebius