illogik

:o nice one, just what i've still been looking for, now i got three in a row ;) and your right, this one is quite simple NAS if nothing goes wrong, i'll put some stuff about CV-modding on the wikiii

whaaaaaa!!!!!!!!!!! just finished the PT2399 VCDelay, on my first real attempt to design a pcb. like stryd suspected, it's from the scott bernardi schematic. the voltage control doesn't work yet but i think i got a busted transistor, should be easy. i've got sound though; the vactrol part is still in a blob of transparent glue so i can play it with the light in my room 8) i mailed the guy about placing the pcb in the WIKI here and it's ok with him; he was glad someone was still enyoing his site. i'll make some final checks and adjustments but will post it later this week..aswell as some first steps in the voltage control thing.. i know that's what i said a week ago too but this month i have so much things to do besides midiboxing that progress is just real slow ... cheers, marcel

if you have one of those really small&flat screwdrivers, you can get the PIC out by gently pushing the screwdriver between PIC and it's socket. cheers, marcel

hey; it's best that if you don't have the right voltages at the pic socket; you pull the pic out, and first get these voltages right. If you say you have 5 volts on some points but not at the pic i'm almost sure that you have some bad solder connections. if it's the psu your worried about, you could try power the core with a wall wart/adapter which delivers anything between 7-10 volts, 500mA (if you have no lcd can be less also), this is for me always the easiest way to get the core working cheers, marcel

hey thorsten thanx, but this is a bit too much for me right now, my understanding of the software here is scattered at the least, will look in to it later to see if i can start to understand the structure/connections of the code. for now (have to finish project before friday, got a performance then), i'll just make it with 4 buttons to choose the presets directly. cheers, marcel

hey so if CC64 is 64 to 127 the gate should stay on no matter if there are note off messages this isn´t implemented but i´ts probably possible cheers, marcel

Hey; For a streat theater act www.mechamicri.nl i’m building a small midicontroller for operating a micromodular. It has 2 pots and two buttons; pots for cc’s and buttons for selecting presets. Everything works exept for the buttons; they should send program change up/down, which i think requires a Meta event. This is the piece i underestimated… I’ve searched the forum and come up with some stuff, like the code in this topic (for old mbplus) but i still don’t understand.. http://www.midibox.org/forum/index.php?topic=427.0 See if i at least get the basics right; you can assign a meta event to a button (easiest way Vmidibox64), meta event number can be 0 to 127. In my case i need to make 2 meta events (program change down and program change up): this is where i get lost…. Is the mb64_meta.inc file the only file that needs to be modified? (i don’t understand how things are done in this file, so i wouldn’t even be surprised if it were there allready ;) ) Some tips anyone? (or is this just way out of my league if i don’t understand allready? :-\ ) Cheers, marcel

hey guys; i'm busy making a start and writing some stuff on the VCresistors (noo i didnt forget ;), just got a million other things in real life right now, try to get something here before wednesday) , and as starting point i'll be using the control voltage part of a delay design using the pt2399 (digital!) echo chip. I'm also making the whole module (designed and etched a pcb) and if it works i will publish the pcb in the WIKI. cheers, marcel

hi, take a look at the schematic; j5/j6 is SR2, j7/j8 is SR3 you want to assign 2 encoders to J5 (J5 in the schematic) ENC_ENTRY 2, 4, MIOS_ENC_MODE_DETENTED2 ; V-Pot 1 ENC_ENTRY 2, 6, MIOS_ENC_MODE_DETENTED2 ; V-Pot 2 the 4 buttons on J7 should be on SR3, pin 4 SR3, pin 5 SR3, pin 6 SR3, pin 7 cheers

hey; i had some problems like this before, when i powered up with lcd connected it would reboot or hang on boot. My adapter was on 7,5 volts, which should be ok, but when i put it on 9V it worked without a problem.

hi jacks! ??? i'm not usual; i sweep em all ;) hey alex; i'm interested in your approach but wanted to keep control as much in the analog realm as possible so im more into vactrols, jfets and OTA's :-[ this is for the people who have seen me saying this for years but not coming up with anything... it's not so easy to understand for me as all my electronic experience is coming from practice/making (other peoples) diy projects, not doing complete studies i have to start reading books about this stuff... a lot.. ; so keep it up so we can compare; vc-resistors VS Digipots!! one day... cheers a digital (i'm sorry, but i fink it'll sound good) delay ic and some opamps thing is i have to ask permission first; not my design.. ;D :P had a bad day so put in lots of smilies and some jokes

when i look at it, to me it looks harder to config. And i'm sure forum/wiki/people can help you with the 2 core option.(will cost you one core more though) like i said; the ain64_din128 is an example (can be used to learn and expand), the mb64 will probably have more user functions implemented and is more "ready to go" but please look in both main.asm files (especially the mb64 one) you can read em with any text editor; if you do this you know what i mean; configuring a "complete application" is kinda like a multiple choise quiz hey; even i can configure it and i don't even know what coding is ;) but again, i'm not trying to make you choose mb64 over the other; just saying it would be good to compare. cheers

i'm working on a mbdelay pcb... that is; a delay with vc delaytime/feedback which could be controlled with cv from midibox keep you updated.. ;)

hey and welcome; just wanted to say that ain64_din128_dout128 application is an example application. i never built it, so i'm no expert on this, but looking at the main.asm (where the apllication is configured) this example is not as user friendly as the complete applications as for instance mb64, which is very similar (but has 64 buttons/leds max). compare the ain64_din128_dout128 main.asm to the MB64 main.asm, you'll see what i mean. also i dont know if it's easy to implement encoders in this app as in mb64 it is. not wanting to kill nice intentions, (and maybe you are just far better at this stuff as me) if you are sure you NEED 128 buttons, you could give it a try.. but if i scared ya ;); take a look at mb64; you could have (if i'm correct): 64 ain (pots faders joysticks) 64 din (so maybe 60 buttons+2enc) 64 dout (leds etc) then you could later even add another core which handles the rest of your buttons and leds (this is how the monster controllers in the galery are made) just giving you some options.. good luck, marcel

yup; if you don't know what kits you need for building a standard MBox like MBSid with full cs, you shouldn't be ordering at all, but reading... i'm sorry but what do we want here; it's close enough to building lego: do we now want mommy to organize al the parts for us so we only have to click it together?? and a good morning to you all.... ;) in the evenings i get more easy going

my multimeter can, but i don't think you destroyed the caps (in fact; i think if you destroyed anything, it would more likely be the SID filter section). But, if you got more of the caps, you could change em to be sure cheers

you have a digital multimeter? put it on AC ;) (this symbol; ~) or read this topic: http://www.midibox.org/forum/index.php?topic=4850.0 and if you didn't know allready; use this circuit; it has a real good signal to noise ratio http://www.ucapps.de/mbhp/mbhp_4xsid_c64_psu_optimized.pdf cheers

hi; if you build it with a bridge rectifier, it really doesn't matter what the polarity of your adapter is. i think that pin 25/26 only have 5 volts when the PIC is in the socket so if everything is fine exept these, maybe you can move on. check also your adapter with yur multimeter if your not sure about that good luck

this is ok; just to be sure; you do press "build"/"make" in the MPLAB right? just saving the main.asm won't work. if it's not this, it's probably some bad connections (and did you wire your pots like pay_c said; +5V, Ain, Ground?) good luck, marcel

hey; the lip is the circle, so circle @ pin 1 this can be seen in the datasheet also (but it's the same on all ic's i guess) google for "(chipname) datasheet" cheers, marcel

did you enable the AIN in the application? MB64E is made for encoders; the pots are an option and have to be enabled in the main.asm file of the MB64E app. cheers

hi; checked your wires? maybe you swapped some..

Hey people, The new WIKI is in effect now Due to the vast amount of topics and postings in the ever growing forum, it’s getting harder to actually find what you want to know. People who’ve been hanging around here for quite some time know, that one of the effects of this is that some general questions are being asked (and answered) again and again… The WIKI can provide us with a more fexible place to put this info; Instead of saying “search the forum for…†then we could say “look it up in the WIKIâ€, which is better, because people can edit the info there, making it more complete (adding their own questions/answers and so on.). Of course the WIKI will also be more reader friendly, you don’t have to search so much as the info is better organized. So the idea is to make the WIKI a living knowledge base where every member can write down midibox related info in their own words!! Step by step tutorials, frequently asked questions, problems you encountered while building hardware/uploading software/getting your box to work. The WIKI is also the right place to publish and introduce your own MIOS or MBHP related projects like PCB layouts, schematics, MIOS applications. Even "blogs" are welcome. You can ask an admin (Twin-X, SmashTV, TK) for putting the files on the midibox.org server, you will always be able to improve the documentation. The new WIKI allows you to log in with your forum name/password, so no excuses….write!! ;) As the introduction on the WIKI says; “do not be afraid - edit & add as much as you want, the worst that can happen is that it gets changed again!!! Enjoy!â€

not really; it means you have to desolder the opl3 (it's a chip / ic) from the soundblaster as seen on the photos on the OPL3 module pages, this chip then has to be soldered on the OPL3 pcb now, if you really wanna do this project (which i'm not sure of); build the HARDWARE, then start thinking about the software/programming because you are asking the same questions again and they don't make a lot of sense.

hey; you don't program the YMF262, in the midiboxfm the core module will control the ic , so you need to program the PIC on the core module like somone said before; try to read up on the pages on ucapps.de. its a lot of info but it's all there, you just have to do it in the right order. if you don't have the patience/time for this you probably also won't be able to build the hardware for this project.. so if you wanna build a midiboxfm; go to this section; on the first page you read; so, you need to build the core module and the opl3 module; so now read on at the pages of the core module, learn about the different codes/software you have to burn/upload in the PIC/core; bootstrap loader (needs a programmer, or you can buy it already burned from one of the shops) mios (the operating system for all the midiboxes, uploaded with computer with midi) the different applications (in your case midiboxFM, upload with midi) then read on how the OPL3 module works and how to build it., read further if you want to expand it etc. and before you know it.. you could be answering these kind of questions for the next wave of confused new people ;)