illogik

hi, the limits of digital/analog inputs/outputs given per application are the limits of what 1 core module can handle (with that application). It's possible to link cores/apps; so if you want more dins-->build 2 cores and link them. good luck, marcel

i think this is ok but you should just try it; worst case scenario is that it doesn't work properly; then use a bigger sub-d connectors you can also connect up to 8 pots/faders to the same Vdd (+5V), saves you another wire good luck, marcel

don't know exactly what you mean (it's early for me) but; you can visually check joints, if they are dull (compared to shiny) they are probably bad contact, too much solder is also bad (results in a "blob" of solder on top of the pad). The pad is gooduntill you lift/melt it from the board. BTW i guess the regulator can handle more heat then other components. anyway check the connection with a multimeter and if your not satisfied, desolder (do you have a pump?) good luck, marcel moebius too quick again... gonna make some koffie

have u checked the main website; ucapps.de ; MBSEQ!! this can do everything you need + more cheers, marcel @moebius-> have you checked this http://monopole.ph.qmw.ac.uk/%7Ethomas/synthdiy/index.htm synth diy guy from england with home-made CNC machine; roughly half the price of Schaeffer

getting bored of this bllsht, DONT SELL A MIDIBOX DEFINITELY NOT ON EBAY BECAUSE WE WILL FIND IT AND START MANY DISCUSSIONS IT IS NOT WORTH IT....... if you need money for new projects and you have a old project your not going to use consider selling it to a friend + ask equal/less than you payed (friend!) if this isn't possible BAD LUCK now gentlemen, let's get back to the important stuff ....  8)

Pitch is just one of the things you can control, cv's can be used for everything which has cv-inputs; think of filter cutoff, amplification, lfo rates, you name it.. And there are 10 gate outputs, at least when you use MBCV, the 8 additional gates are on the core board (j5?? search the forum). cheers, marcel

yeah i fink so, (right guys?) it's a stabilized voltage? if so you can do it, but be sure to connect it to port J2 (not J1), and leave out the voltage regulator part before J2. You can find this at core module page. cheers, marcel

Nice! didn't think of that before... Just by connecting the switches of all the encoders to the dinput for the "fast" function? or is it too early, that i didnt have my coffee and i'm talking crazy stuff? anyway nice box, i wanna finish mine :'( cheers, marcel

stupid questions don't exist ;) you need a keyboard or a sequencer! The MBSID and MBFM are "just" synthesizers, so they have to be played by something else. If you dont have a hardware midi-sequencer or -keyboard, just get a software sequencer, for instance fruityloops. Set the midi channels right and sequence!!@!@ good luck, marcel

no i think the ledrings we use have all leds on if the value it represents is maximum, no leds on when value is minimum (like a meter) @melonenmonster; dunno why, but it works of course cheers, marcel

hi, flickering LCD-backlights are allways bad! maybe you have a bad power supply (using the c64 PSU?), or a (power)short on the sidpcb. Anyone else..? cheers, marcel P.S. Jan chek je pm

hi, so it does react to midi note on/off (it plays the sound when you press a key)? if so; my guess would be; a dead/broken SID :P, i've had two so far so this is very possible! however it's good to (double)check everything (voltages connections etc.). The lcd works ok? if all the voltages on the sid/core boards are ok, you can check another SID, this cured all my problems. good luck, marcel

Hi, the quality of the VCA is (mostly) defined by the quality of op-amps/OTA's you use. so use low-noise/high quality opamps etc. here are some easy DUAL VCA's i've built, they work fine... http://www.musicfromouterspace.com/analogsynth/vca.html http://www.musicfromouterspace.com/analogsynth/newdualvca.html cheers, marcel

i fink hallucinogen has allready made an TR-808 clone were the drumcircuits are triggered by MIDIO128. Maybe i have some code he sent me i'll look it up, or PM hallucinogen.. i'm busy with this midi controlled analog drum-thing too.... well i was, have to move into new house first, but once i get my lab started there i'll continue with experiments and show you some results.. i hope cheers, marcel

hi, you; soldered everything? Â Â Â Â Â have tested for the right voltages? Â Â Â Â Â (have put in a PIC burned with the bootstraploader (or a pre programmed one from the kit supplier)?) if you now connect the lcd and turn up the contrast trimpot on the core, you should be able to see a row of black blocks. if you dont see em, there is something wrong with the lcd cable or the core module (power) so, no , only a working core module. if this checks out, you can upload the operating system; MIOS, through midi. If you do this correctly the display now shows something like "MIOS 1.7". >then you know core and lcd are good cheers, marcel

Right, better late then never... Specs on VOTI (www.voti.nl) encoders; M-SW-ROT, detented rotary encoder, price EUR 1,19 Encoder mode: "DETENTED2" (not 100% sure will verify later) pinout; http://www.voti.nl/docs/rotary-encoder.jpg if you view the encoder from the top with the pins pointing towards you; left pin goes to D1 (highest numbered din pin) middle pin goes to D0 (lowest numbered din pin) right pin goes to Vs the detent can also be removed cheers, marcel edit// oh dear :-[ just found out the pinout i gave is wrong! been standing here for over a year now, so if any of your boxes work backwards you know who's to blame it's fixed now

hi, ??? diY ;D dont think there are too many people here jumping to make this controller for you, but you can do it yourself, just read the ucapps.de website to find out what need for your design (which app, howmany modules, parts knobs etc), where to get the parts, which are the possibilities MIOS and the app your using etc. if things are unclear or if you have questions you can look things up in this giant knowledge base; the forum 8) chhers, marcel

yup, should be possible ;D , just bend some clips and mix some values! let us know if you make it work!!

ok then! ;D~ thats being lucky better check out the thing bout log pots though; you said; i thought the pot acted as a voltage divider; when a lin pot would be halfway, the resistance between the middle leg and each of the other poles will be the same which divides the voltage exactly in half. But a log pot wont have the resistance halfway when it's phisically halfway>> it wont divide the voltage in half which results in that mios doesn't think the pot is halfway>>"false" mididata i hope this makes sense.. ;) good luck, marcel

hi maybe this is easier but if you make the voltage-range outputted by AOUT right, so that it sweeps the whole spectrum like the original pot would do (i think you can adjust each of the 8 voltages on AOUT with it's own trimpot so this can probably be done); you could even replace the original pot with a pot hooked to AIN. This pot sends midiCC, midiCC signal can change the voltage of the cv output on AOUT, thus you can change your filter cutoff directly by your midicontroller(or whatever is voltage controlled in the analog gear). or am i missing something here? the reason i'm saying this is because i don't know if this is tru; are you sure you can use log pots? and even if this doesn't matter can you find (make?) dual pots with different values (or are the pots used in the filter also 10K?) im curious ;D good luck, marcel

hi, That would be a core and an AOUT (not ain) as a midi/cv converter; MidiboxCV (is quite expensive but worth it if you like analog). Then you could connect 1 of the 8 cv outputs to the cv input(s) of the filtrex. It does have a cv input, this is from the filtrex page; So you can also connect 1 of the 10 gates of mbcv to the filtrex. If you do all this you can; control the cutoff frequency with a midi CC/controller and gate (trigger) the filters envelope generator with midi note on/off messages. If you want resonance under control of cv and thus midi, i've seen this trick but i dunno for sure this works with each VCF. resonance is mostly some kind of feedback path of the amp part of a filter (more experienced people are welcome to correct me here), more feedback>more resonance. if you want to control this you can "insert" a VCA (voltage controlled amplifier) instead of the pot in the feedbackpath. With the vca you now can control the amount of feedback by cv thus by midi! @@rumblack; you can also use OTA's as voltage controlled replacements for pots, but i haven't studied it enough to really undersand how it works and how to use it. The datasheet of LM13700 OTA http://www.national.com/pf/LM/LM13700.htmlhas some examples of voltage controlled resistors; maybe someone can shed a light on this?? How to replace a pot with the VCR circuit, how to get the right values, the right cv-range? You can also use LDR's (light dependent resistors) combined with (a voltage divider and) a led (vactrol) to implement a VCR's this is way mor easy however really unaccurate (forget 1V/Oct tracking), and maybe not so fast response. check this for more info; http://home.comcast.net/~sbernardi/elec/og2/og3_echo.html cheers, marcel

hi, second sample is ok; the "noise" you hear is the "sid bug" all the chips have to some extend. cheers

hi, you need a working midi in and out port, but yeah this is possible. if you upload the right application you can check if the pots send out midi messages, for instance with a (software) midimonitor if a (example) hardware setup from the website has more buttons/encoders/pots/leds than your own design you can leave those out . The thing to do when you know exactly what your design is, is adapt the application (mostly the main.asm file of an app.) to your needs, you can set different hardware options concerning pots leds, etc. good luck, marcel

yeah sortof, with 1 "doutx4"module you can drive up to 32 leds. in this case the matrix takes up 16 dout pins (actually 15 but i dont know if the 16th pin can be used), which leaves you with 16 dout pins... good luck

hey leelin, Most local stores (well, my local stores that is) are EXPENSIVE!! (prices are sometimes 3 times as much as mailorder companies). Try reichelt if you are in Europe, mouser if you r in US. The kit suppliers (SmashTV US, PCB-Mike Europe) are a cheap and of course easy alternative. it is right ;D the "2002" one is an orderlist for Reichelt mailorder and the "2003" one is for Mouser;.......... choose one ;) good luck, marcel