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thanks guys.. quick as a flash... it's 3.33am here.... i wasn't expecting that ;-) next question... it's a dual sid.. will the slave core board still run ok if i take the optocoupler socket off and chop it into a million pieces? (well, maybe 3 or 4, to make capacitor sockets to try different values out) i'm guessing it's ok if the midi in comes into j11 or whatever instead... but i like to obsessively check these things...

i'm soldering my first sid board but have some mystery caps... they are ceramic, one type is printed with "104" and the other "102" (102 is smaller) does anyone know if these are 100nf and 1nf? best wishes adam

looks good... thanks thorsten, i think this means 3 or 4 pots on my sid, an expression pedal socket and a cv input, i have been wanting more controls like this but didn't want to build the full cs because of the cost... i started soldering today, i have only destroyed one pad through overheating on the optocoupler socket, i think this will be the slave board now ;-) and i should take great care soldering the other core... all the best adam

i think some people have tried using switched psu's to power midibox lc and it didn't work too well.... but the other day in a shop i saw a usb port and power connector together in a 3.5" drive bay.... i don't know if that's really significant and i'm not much of an expert ;-) i guess the thing might be to check that you're getting a stable 5v from the power line and try powering the core for a while to see if it works (or if it melts and catches fire ;-)

thanks for that.... i'm gearing up to begin soldering... figured it would be best to do the power circuit first..

hi, i can't find the b40c800 either... so i'm looking for alternatives for my dual sid, i notice on smash's cores he supplies a BR1 which is 1.5A 800v is that about the rating i need for the sid or would another rating be better?

thank you sir...

subject line says it all... i've got one coming... i need to know what type of socket to buy for it....? answers on a postcard please ;-)

thanks chaps....

http://www.edn.com/article/CA313057.html hi, i was reading this article about using a pic to generate noise and it got me wondering if a wavetable generated by a pic could also be used as an oscillator? (if the wavetable output could be connected to a dac or directly to an audio output?) just curious ;-)

thanks Duggle.... all sounds pretty clear... my only concern with unusual connectors is not being able to find replacements... i guess i could buy 10 plugs and 10 sockets... plenty of spares ;-) i tend to worry about this kind of thing... i was looking at usb sockets the other day... it said they were good for 5000 mate/unmate cycles... i didn't think this was many.. then worked out this would be good for plugging and unplugging 8 times a week for 12.5 years... should be enough i think... ;-) then the sockets can always be replaced...

what i have is one plug pack which supplies +&-12v at 250ma and +5v at 1a (it has a din connector, so there is less chance of plugging the wrong supply in, i think i would mount it on another side of the case to separate it from the midi connectors, or put some kind of fighter jet style cover on top) i don't think it is regulated, (it didn't say so on the website anyway, and it doesn't say so on the transformer) it doesn't say that it's unregulated either of course.. is there a way for me to check? (i have some din connectors, i could wire it up to some stripboard and watch the output with a multimeter i guess).... excuse my basic questions.. from what your saying it seems that i can wire the unregulated 5v up to a regulator as normal, but from what smash says it may run rather hot with only 5v so i presume i'll need to heatsink it one tip i learned from a guy with lots of computers is to put different coloured stickers on each machine and on each plug/psu.. makes it easier to unplug the right thing... i guess with a sticker or paint on the actual psu connector this would also help people plug the right psu into their device

i've bought a +-12 and +5 wallwart from a surplus place... i'm planning to use this with a zener on the +5 line so as not to kill the pic... is there any cleverness i can do to make sure the supply stays above +5...? some kind of capacitor soaking up the excess power then letting it out when the voltage drops... i remember someone saying that the regulators need at least 6v to work best

thats fine... threadjacking that is... it seems to be getting pretty interesting ;-)

i'm pretty much an absolute beginner with programming/electronics, though i have done a bit in pd... i am recovering from rsi so it might be a bad idea for me to get back into doing lots of typing (programming) again... and i too have quite a long list of projects to do already your seq does sound like the ideal thing to control drums... i'm wondering if some kind of simple solution would be good.. like the seq having trigger outputs and any changing of analogue parameters done by pots connected straight to the relevent drum sound modules... i know this doesn't allow recording of automation but might be a quick (ish) ;-) solution... i'm inclined to try breadboarding these simple circuits to see how i like them.. initially i would probably use logic ic's to create kind of preset ryhthms like i've described... i did have an idea for a sequencer using a decade counter (theres an example on that same site..) i was a put off a bit by the idea of wiring up 64 switches for 4x16 tracks... and the costs etc.... hence my thinking about making some kind of simple (ish) ;-) thing using logic ics... not as flexible but i also sometimes wonder how much i'm actually going to use some of this stuff once i build it

i like the idea of doing it.. i have a number of drum machines already... i'm veering towards a simple low cost solution.. i've been making patches on the micromodular using pairs of clock dividers feeding into logic gates.. the xor gate makes damn funky rhthyms... i'm thinking i'd like to make something like this... (any readers can try it for themselves with the software demo of the nord g2 on the clavia website)

i've found some fairly simple percussion generator circuits i'm getting the urge to make a primitive analogue beatbox.. or maybe just to breadboard these and sample them.. http://members.shaw.ca/roma/sixteen.html

http://www.rapidelectronics.co.uk/rkmain.asp?PAGEID=80010&CTL_CAT_CODE=30378&STK_PROD_CODE=M29589&XPAGENO=2 rapid have some.. i don't know if they have holes in the top.. it looks like either holes or screws in the picture.. best wishes adam

this is from the pd-announce list.. it is not me.. the address of the creator is at the bottom of the post ---------------------------------------------------------------- Hi all, Tomorrow, there will be the first public showing of my pinball machine project. venue : Tent, CBK (visual arts center for Rotterdam) adress: Witte de Withstraat 50 Rotterdam, Netherlands time : 20:30 starting time http://www.tentplaza.nl is their official site, warning: this is a very artistic flash site (and not up to date) taking over your entire screen. The presentation is part of an evening with various Berlin Artists, and a beerstube with bratwurst. ABOUT: A slightly modified and repainted pinball machine (a 1992 DataEast) is hooked up to a computer running linux, effectively replacing the soundcard of the pinball machine. In this first presentation, the sounds are generated by csound and the composition controlled by pd interpreting the many codes it receives from the pinball machine in sometimes surprising ways. A play costs a Euro, and for that price you get your very own interactive concert of contemporary electronic music and a chance to win another round, or to enter your initials or to play the fabulous multiball mode. FUTURE: I would like to invite other composers to write pieces for pinball machine. Stay tuned for further announcements about this. ciao gerard -- electronic & acoustic musics-- http://www.xs4all.nl/~gml

i did see one us website selling ymf262's in single amounts for $7.95, but no yacs to go with them, it could be that the guy could get some yacs as well, i can't remember the address, but i found it when i was searching for suppliers.. hope this helps

great, well, i'm assuming that everybody's happy then ;-)

thanks guys.. is anyone still waiting for their chips?

i've found some wall warts with +5 and +12, -12v.... will these be suitable for the fm? (i don't know if they're regulated or not)... would i need to take the 5c regulator off the core like if using a c64 psu on the sid? all the best adam

i have sent all the chips out now, shed and mk, yours should arrive tomorrow, the rest will be 5-7 days for the eu and maybe 10-14 for the rest of the world all the best adam

yeah... well d2k is testing the yacs but ideally someone needs to test a ymf or two as well.. i have sent about half the chips out, the rest tomorrow... well later on today i guess ;-) (including yours skunk) if anyone is ready to build their opl3 module please do it at once ;-) if any chips are dead then i need to know as soon as possible.. (before the 27th or 28th) in order to return them... lets hope they are all ok (i'm imagining everyone returning their chips.. whew).. i think i have to train on soldering smd's before i build my fm... anyway.. bye for now..