illogik

hey rowan, first open the mbsid project file in MPLAB IDE, then open the header file mios_tables.inc . Make the changes in this file like i mentioned above. When finished, build the project (F10 in MPLAB i think), and then when there are no build errors, convert the hex file you just made to sysex with convert.bat. This sysex file you can upload in your midibox. cheers, marcel

and for the bankstick; you just connect the ic pins directly to the pic (at the bankstick port (J4) on core circuit) you can do this direct (internal bankstick) or through a sub-d connector (external bankstick; like a plug and play flashcard or something, you can change banksticks then) good luck, marcel

hi maybe it is possible to do but i would suggest building(if you know how; high voltages!)/buying a small, bipolar (so with + and - supply) power supply. if you wanna build one; /www.cgs.synth.net/ good luck btw; your going to build a 909kick pcb IN a 606 ???

if you read the LC-page, there is a pdf with schematic how to connect a switching power supply (like in PC's) to your LC, or you could just buy a power supply with separate +5V and +12V (pollin.de sells really cheap ones (mind the max current) ). cheers

Hi, there are 2 detented encoder modes provided by mios; MIOS_ENC_MODE_DETENTED and MIOS_ENC_MODE_DETENTED2 In the mios_tables.inc of the sid app., all the encoders are defined as "detented2 encoders". You could try changing the encoder mode to "detented", build a new sysex and upload the modified application. Don't know for sure if this will fix it but i would try it. cheers, marcel

hi all, i'm just about to (finally) finish my seqencer. I had it working before but the encoders acted weird; jumping back and forwrd, because of the jungle of wires between my buttons+encoders/din-pcb's (at least thats what i think the problem was). I decided to etch some new pcb's that mount the all buttons, encoders, leds and din circuits. I just edited mios_tables.inc to assign the shift register pins to the sequencer functions. everything fine; if i look in main.asm; :-/ ??? :( on my pcb's i placed the 74HC165's between encoders and GP buttons; the GP buttons all connect to the first/bottom pins; pin 0-3 of a SR pins. pins 4-7 of the SR's connect to the encoders.. anyone knows a way to assign specific pins to the GP buttons? cheers, marcel

thanks for the offer! is this no problem for you? (i can imagine you lead a busy life ;D ) if it is; i also know small bear electronics, a (guitar)fx diy part/kit supplier;http://www.smallbearelec.com/ can supply mouser parts (if you order something from smallbear?). Cost is mouser catalog price + $7,- + the shipping costs to europe (ranges from $3,50 to $9,50 depending on weight) (i need parts from small bear anyway but dunno if this is a good deal?) anyway let's see who's interested in the bulk and we'll contact you smash. bye, marcel

hi, i think; ebay community=ebay; just search for SID/c64 commodore etc.> remember nothing is really useless, you can re-use everything (with a little imagination ;) ) but for ebay it's maybe better to search for "SID 8580" or something; less shipping costs! cheers, marcel

hi, where are you located? i live in the Netherlands and i'm going to order them anyway (@mouser, don't know alternatives), maybe we can work something out&split the costs. (pm me then) cheers, marcel

i think you can, (a lot of) the midibox modules are plug&play. Dirk Lindhof builds all his midibox modules in a modular fashion. This is the website (it is in german however); http://www.msc175.de/index.htm look under "midi hardware". cheers, marcel

Hi you've got a fully stuffed (all components on pcb) dout, yeah? I think the DOUT-test (haven't used it myself), allows you to select one of (possible) 128 DOUT witch an encoder or inc/dec buttons, meaning when you start the application only the first DOUT is "on", you have to turn the encoder or press the "inc button" to select the second DOUT (putting output 1 off, output 2 on) or did you know all this? ;D in that case, did you check voltages before putting in ic's, are the ic's oriented the right way? good luck, marcel

hey bosone, you dont have to build 4 filters; a lot of diy VCF are "variable state"; meaning you can switch the same filter between LP/BP/HP, + i think you're going to be much happier when you have a filter per SID, but thats only my opinion. If you do it like this, you can make 2 filters and leave out the mixer (or put it after the filter outputs). if you can etch your own pcb's; here is a variable state filter that works for sure (i've buildt this one)+ it's quite small + the parts are easily obtainable; http://www.musicfromouterspace.com/analogsynth/statevariablefilter.html cheers, marcel

the view is from above, so when you look from the knob down. hope this helps, marcel

hey justin, not an answer, but can you find the LFO-ic's? I wanted to build them half a year ago and i couldn't find them (wasn't looking for long though ;) ) As for the question; if the transformer is like the ones i used you need to connect the 2 output pins in the middle together (pin 6 and 7 i guess). By connecting the middle ones they become the "ground pin" (sorry for the unprofessional terms guys) ; the transformer will keep the voltage between either of the outside output pins (pin 5 or pin 8 ) and the middle 15Volts. So now you have the 3 outputs to the rectifiers. BUT BEFORE YOU START WITH MY ADVICE ASK/WAIT FOR A SECOND OPINION, I'VE BEEN WRONG BEFORE (high voltages etc.) :-/ anyway, good luck! marcel

hey moebius, i've seem to have forgotten this topic, found it when i was searching the forum for info on "voltage control". As for what i'm doing/planning; a lot... I've almost finished the mbseq, but the encoders don't work well, i guess i have too messy wiring so i'm making pbc's for the encoders/buttons/dins to clean it up. Then i've also finished soldering the mbcv application (waiting for lcd and hoping for shx8 support in mbcv application ;)) this i want to build together in a midi controlled box containing analog sounds/modules; A 909 style kick with distortion and dedicated 24 dB/Oct VCF (thanks gbeth!) kick plans/pcb pattern from j.schmitz; http://www.analog-synth.de/synths/tr909/tr909.htm ; the kick-velocity, -trigger(converted gate from mbseq) the vcf cutoff(and hopfully some kick controls; pitch, attack/decay) are going to be controlled by mbseq/cv. A cynare drumsynth from www.csg.synth.net (cheap pcb's available!!); the trigger, gate, vcf cutoff (and hopfully the pitch) controlled by mbseq/cv A mono(noise)synth with the sn76477, have to make/find/adapt a design for this so this is only a idea right now. A VCF with simultaneous HP/BP/LP inputs(!) (also from cgs.synth.net.) with dedicated envelope generator (to filter cutoff); vcf cutoff cv and envelope gating by mbseq/cv 2 stand alone (VC)LFO's and another envelope generator. whatever still fits inside the box next to the above!? ;D(modulation matrix as described at;http://monopole.ph.qmw.ac.uk/~thomas/synthdiy/patchpanels.htm?? like these things or maybe this "voltage controlled" (vactrol!) delay; http://home.comcast.net/~sbernardi/elec/og2/og3_echo.html ) I hope to get the mbseq working properly before the end of the month, then i'll start testing the analog modules (probably first the kick and the VCF) with the MBCV application. In the mean time i'll start reading up on the OTA/voltage control subject (thanks for the links), i want to try this out; since i don't really need a nice 1V/Oct cv input; i just want to make some funtions (externally) controllable so i can make control sequences. When i have some results with this i'll be happy to share them with you (but don't expect too much ;)). As for iceberg; i haven't made anything like the ideas your talking about but i suggest you look at the cgs.synth.net web site, there are a lot of small analog synth modules that are voltage controlled (lfo's, filters, audio (panning)mixers etc.). You can order cheap ($5-$20) pcb's and there is good info/support for building the modules; i think you can accomplish the things you want! cheers, and good luck building to all! marcel

hi i had a similar problem, with me it helped when i put the files directly on the c: disk (so not further up, like in "my folder"; i think it has to do with the lenght of the path) don't know if it is the same problem, but you should try.. cheers, marcel

hi, you definitly need the one with the pointed tip; the angled flat tip is way too big for those small components you will be soldering! best thing for a low price is something like this (a soldering station): you can find these at most of the electronic-mailorder-companies for about 20 euros; you can control the temperature with the knob, the sponge is for cleaning/removing solder blobs from your tip. you should also use rosin-core solder and consider buying a desoldering pump or desolder wick, both are for removing solder from your pcb/components when you made a mistake. The pump is a vacuum pump (with a spring inside) which can suck liquid solder inside, the wick is a small copper braid; you can lay it on the solder to be removed, heat the wick/ solder and the braid sucks the solder inside cheers, marcel

if your time runs out; there is also the (much) simpler Broccoli18 programmer you can build. see this topic; http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=news;action=display;num=1088620086 good luck!

Hi, i know the amount of data on the ucapps website can be a bit confusing when you first look at it, but believe me, when you take your time and read the relevant info/pages on the (well documented!!) website(or better; all of the info ;)) i'm sure you can figure a great deal out yourself. if you still got questions then, i'm sure the people of this forum will be happy to help you! If you want to build the MBSID synth (C64) you should start reading; MHBP Projects->Midibox Sid Synthesizer. On these pages you can find all the steps/info on building. aswell as links to other relevant pages for the MBHP project. good luck, marcel

like i said i'm no expert , i was only thinking: vintage game sound ic, yeah! but thanks for clearing things up for me ;)!

i'm no expert on sound-ic's moebius, but ic's with that old bleepy stuff can have quite some good musical applications (ok, depends on your definition of music ;D) Do you know of the Blacet Dark Star Chaos, it uses the sound ic (SN76477N, very rare/expensive now) used in old space invaders arcades. It's a noise-machine/filter, but the sound is good....! (i want that chip soooo bad) cheers, marcel

i think thats right, the later SID is a bit more "static" (cleaner) or so i've heard. depends on what you want; i like the little fluctuations in the sound of the good old 6581 (sounds "alive"). cheerz, m4rc31

yep, thats normal allright., i can understand that you don't like the (after)sound but when you are making music together with other sounds/machines, the aftersound isn't (that) noticable. If you find it still irritating you will have to use a (noise)gate or something similar. cheers, marcel

the sound is quite a bit softer but still noticable? I think that is one of the sids "bugs"; allthough i can live with this aftersound, i guess you could build/buy a (noise)gate, this will turn down the volume completely (of the sid, or whatever you feed through the gate) if the volume goes under a predefined threshold. cheers \ marcel

always interested in new things... keep us informed!! the AY-3-8914 and YM2149F are sound chips for old (game)computers (intellivision)?! ;D should be nice noise machines then.... cheers, marcel