moebius

Hi, I think it's important to NOT leave it floating - try connecting it to the VD (+5v) and see if that helps. M

Hi, Dirt or oxidation on the PCB? Well, I'd desolder the whole thing, clean the PCB a bit and try again. Why? If the ground connection is lost, these regulators pass thru unregulated voltage! :P Not good. --and also, I've been around when a "cold solder joint" in a PSU was to blame for a failure of a opamp and causing hum on a "well known brand active studiomonitor". The solder join LOOKED perfect, but as the part was a power resistor (those usually warm up a bit ;)) the years of use (and heat) revealed a problem "that wasn't there", in factory's quality control tests. --I'd take good care soldering a component that's part of the power circuit and heats up ;D Bye, Moebius

Hi, It's a workaround - but you'll need to do it only once per PIC: Burn your pic with standard all zeroes header and then use "change_id" application to change the pic header to the one you want. change_id_v1_4.zip is available at MIOS download section. You'll need to change main.asm and then compile and upload it to the midibox and it should change the pic header to what you need. Bye, Moebius p.s. I hope this helps, I think it would be stupid if you have to buy anouther programmer, because the one you have doesn't fully support burning PIC id header..

Hmm.. have you tried any other midi devices on that particular midiport? Can you see midi data in midi-ox if there's something else than midibox connected? Trying to figure out, if it's computer/driver/interface/configuration problem or something to do with the midibox ;D Bye, Moebius

Yeah, Sidetracked. Enough of this ect. M

Hi there! It's MF board (module), see uCApps - for handling the motorfaders. If your having troubles finding leds (or cheap leds), definitely check out eurozone eBay offerings-- I've been mostly checking out ebay.de and there are many "led specialist" shops offering different leds for a reasonable or even cheap price. And usually shipping costs for different parts of Europe are already calculated and payment can be sent by a simple and cheap bank transfer. ;D And nice to hear you could find a frontpanel maker - tell us how much it cost, when you get it done.. ;D Bye, Moebius

No, it isn't! ;D Pots are used as a potential dividers in a Midibox. Using 10k or say 5k pot between +5v and GND give a full scale between these voltages to be converted by ADC. But if you think of a 10k pot which only moves the half way... Anyway, you must be joking, Roger ;) M

You don't get it, don't you? Building a successful eCommerce site with Linux + Apache equals building MBSID and making a top ten hit, in a midibox world. What they do then? Tell me? What does a company do: let it's own (windoze ;)) comp. techs setup the sendmail instead or hire a pro to deal with the postfix? And now if you're the guy setting it up, which one are you? Looking at your SID... And hey, if the company is really serious - yes, linux MEDIA is cheap, they also buy the costly support plan-- I can't see where you would fit here, it must be the midibox community then, which doesn't get paid for its work... Bye, Moebius p.s. I wouldn't like to this happenin' again. Being unemployed, I'm poor, but my time is cheap.. Still I wouldn't like to spend it on people who take advantage of it. Could I get engraved PCB's for free - with some Sweet-Talking, hell yeah! Do I know a couple of places, where they do low priced frontpanel CNC engraving as student works? Probably. Do I need some cash to spend - doesn't everybody? What stops me?!

Uhhuh? What should WE do about it? Jamram was last active on the yesterday.. Is building midiboxes for other people becoming a new cottage industry? --Doesn't ebay have a system to report "suspicious" items? is THIS Â one of those? From my view it is. If the pic is ordered from the microship as a sample, I think that's also breaking the license. Samples should have "no commercial value". Fuck, Am I irritated? M

Wow! It's so nice to see, You're still having FUN!! Bye, Moebius

jamram: http://69.56.171.55/~midibox/forum/index.php?topic=1297.0 Bye, M

Yeah, you are right ;D Switches need two poles, so velocity can be calculated from the time, what it takes to switch from one position to another. Bye, Moebius

Sounds doable. And 50e/board isn't really THAT bad price ;) Hmm.. I thought it was a discontinued long time ago, but http://www.cedos.com/e510_midi_chip.htm - Cedos has these E510 chips for sale.. can't find the price though. It would even have velocity sensivity ::) And how many buttons do you need for your MB64? You could EASILY configure buttons to send midi note commands using Vmidibox64: http://www.midibox.org/mios_tools/ Bye, Moebius

Well, I've only seen one (that was "edit" slider in a synth) data slider to go bad. The shaft got loose and it ended up jumping between the value set by the actual position of the slider and (I think) zero. Most annoying. And if you can't mechanically fix the fader, there isn't much to do about it. The other common failure mode for pots/faders are 'em becoming "scratchy", usually clearly heard as noise bursts in audio signals. (I think MIOS captures analog inputs in a full 10bit resolution (midi CC's are only 7bits) and there's also "MIOS_AIN_DeadbandSet" function to deal with the jitter -> ie. changes too small to have any real significance. But I don't think that could help this issue.) I think when fader/pot becomes scratchy in a Midibox environment, it would show up as abrupt, fast and sort of random changes in parameter values, while moving controls. Bye, Moebius

Yeah, I think so. It's pretty damn close to 5v and I think that PIC and the logic around it are build to work with voltages 4.5<->5.5v- Bye, Moebius

Thanx Smash ;) airmailed-- Well, that was a simple question with no "I don't understand this" content ;) You probably taken out the optocoupler and doin' your thang.. But to be sure, check: http://www.ucapps.de/midibox_link/tunnel1.gif for the connections.. just the way you did? ;) Bye, Moebius

Yes, they are. Not only my english sucks, but my math too, so combining these.. ;D But: Caps only marked by numbers are always in picoFarads. 104 is read as 10 x 104 = 100000pF = 100nF   |______________| Now, somebody, explain this in proper terms, so I can learn those to.. Bye, Moebius

Yeah, that's the way to do it! ;D Congrats, Moebius

Hmm.. Does anyone owning the MMT-8 also happen to have a digital camera and some good will? The short version of the story is: I've got a MMT-8 mainboard and I'd like to make a working sequencer out of it :D (the long version-- I had one, a complete unit, which just started to fail too often. Tried my version of "the MMT8 Button repairs; concrete fix", which can be found from http://www.mmt8.com/misc.html (not that I had ever heard of it before ;)) and never finished. The day, when my mom told that "She's tired of her cellar having "just too much unorganized junk of yours"", was probably the day when I made this mistake of throwing out (too) much of the unnecessary junk, also the panelboard of the MMT-8..) So, could someone take some high resolution pics from the both sides of the panelboard? Inside pics of the MMT-8, so I can see how the cables are connected (not that it wouldn't be easy to figure out)Â Also a pic of the mainboard.. I've taken out the connector of the LCD, but also something below the battery?! And what does the LCD say-- It's a standard HD44780 based one (with a backlight?), right? So, if I could trace the schematcs of the panelboard, I'd like to make a board for a rack mounted unit.. Bye, Moebius p.s. Eh, a misc request-- I have the 1.07 version of the firmwave (with a evil memory dumping bug), does anyone have the latest version, 1.11?

That module doesn't have velocity sensivity: mkcv64cs/mkcv64sm and mkcv128 do. You don't have to worry about the priorities: MIOS/Apps run fast and in a scheduled manner. There's midi receive and transmit buffers-- Handling midi note commands from midi input and merging with controller data from pots is no problem. Bye, Moebius

Effective voltage, that is.. Good thinking - PSU is not regulated well enough to power SID module 9VDC directly, but on the other hand: 10VDC is NOT enough, if rectifier and regulator are in place: Rectifier has the diode drops and the regulator needs 2v or more headroom (input voltage must be 2v+ higher, that the output voltage of the regulator) in the input to start regulating properly. You could switch your power supply to the higher voltage (to power SID properly), but then regulator in the core module will heat up even more :P (You could try heat sink the regulator in the core) Maybe getting the C64 PSU would be a good idea... Bye, Moebius

Do they?!? Have you left out the diode rectifier and the regulator as you already have 9Vdc regulated? Bye, Moebius

I'll send you one. PM M

Uh-huh? At first, I though it was only about the bypass caps.. Now, I think it's more serious. Like, the output decoupling caps affected-- Yeah, they were. How did it sounds like? Muddy? Still, the board worked out ok? People? Soldering a few SMD components and having this as the problem? Still. Good spotting there. Don't blame your soldering errors on Smash, Moebius Smash is not just a human being.. he's a superhuman ;)

Noo.. get a good blow, man! The uCApps site tells you to: go a one pin a time and then suck the solder ;) For this shit, get the smallest tip you can ever get. Period. Good for small tinkering. Period. ( Lame shit for some engineers, I say!) For those who just can't spare the time thinkin' - what could be the pin that didn't desolder properly, it's not cummin' out! I'd suggest the proper way.. A big soldering iron tip suggestested (the one heated at the proper electronics soldering temp., mind ya) -- get the wire as said on the uCApps pages under the side of the pins you are desoldering. Then apply a plenty of solder at the pins you were to desolder-- let it cool for some time.. maybe smokin' some. NOW it's time for the attack. Keep pulling the wire under pins tight, and move your soldering iron along the pins, keeping all the solder flowing-- Easy wasn't it? You could lift all the pins about the same time? Did it give some extra stress to the IC? Count it by yourself. Maybe less stress, than desoldering a pin a time? Count it by yourself. Try it out by yourself-- just a technic I copied. If it works, ok - If it doesn't, lets hear from ya. M