tag:blogger.com,1999:blog-7146046303846422761.post5050980016487901955..comments2023-12-04T08:15:26.182-08:00Comments on NOYSTOISE: CASIO PT-100Unknownnoreply@blogger.comBlogger14125tag:blogger.com,1999:blog-7146046303846422761.post-57364537790366543652016-09-10T07:06:06.724-07:002016-09-10T07:06:06.724-07:00sorry, i don't know. i do not have a pt100 on ...sorry, i don't know. i do not have a pt100 on hand.TANNER GALVINhttps://www.blogger.com/profile/17540732491143180008noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-40265438424119457952016-09-09T10:05:52.111-07:002016-09-09T10:05:52.111-07:00Hello! I bought pt 100 keyboard, but it is missin...Hello! I bought pt 100 keyboard, but it is missing transistor T1 near dc jack. Can you please tell me which transistor it was?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-18806589845743359642016-06-08T13:58:28.091-07:002016-06-08T13:58:28.091-07:00hello! i think it was just a very basic filter, li...hello! i think it was just a very basic filter, like the one on the music from outer space weird sound generator. i probably put it somewhere between the sound ic and the power amplifier. it has been a long time since i made this, so that is just a guess..<br />TANNER GALVINhttps://www.blogger.com/profile/17540732491143180008noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-73064004793724215302016-05-22T11:46:17.061-07:002016-05-22T11:46:17.061-07:00What type of Vcf did you use? And where did you ho...What type of Vcf did you use? And where did you hook them into the main pcb?Anonymoushttps://www.blogger.com/profile/02310428435239721675noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-37611494758616153492014-02-01T09:25:56.584-08:002014-02-01T09:25:56.584-08:00Hello, I have on of these Casio PT-100's but w...Hello, I have on of these Casio PT-100's but whenever I turn on the power switch, nothing seems to work. I've tried using various batteries, AC/DC adapters, plugs, and tried opening it to see if anything is loose in the circuit but nothing is visibly damaged. If you know what might be the problem please let me know!!! Thanks.<br /><br />reecewolff@rocketmail.comAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-68207507598748762952012-03-11T12:41:36.925-07:002012-03-11T12:41:36.925-07:00it has been a long time since i built this. i cant...it has been a long time since i built this. i cant tell you what pin it is exactly but it should be obvious. if i remember correctly, the timbre slider switch has a common pin. each octave on the keyboard has a common pin as well. replace the common pin on the keyboard with the common pin from the timbre switch and there you go.TANNER GALVINhttps://www.blogger.com/profile/17540732491143180008noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-69090630187982456052012-03-11T00:43:41.312-08:002012-03-11T00:43:41.312-08:00Hi, this is very sweet job you did on this. The su...Hi, this is very sweet job you did on this. The sum total of your mods are more extensive and more useful than nearly all the other "circuit bent" PT-100s I've seen on youtube. I've spent a while messing with my own PT-100 and have found and made most of the same mods you did, and a couple others. One thing I failed to discover though is the where the Tone Select pin combo is located. I found the Rhythm Select pin as described on tablehooters, and I have the 12 rhythms keyboard selectable with a simple push button. Any chance for one tiny hint here on the location of that one pin coordinate?Unknownhttps://www.blogger.com/profile/17676176010173704965noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-77515291828455866132010-04-06T06:12:58.347-07:002010-04-06T06:12:58.347-07:00Ah right, I might not put one on mine, but I will ...Ah right, I might not put one on mine, but I will bear it in mind for any future projects, I'm quite happy with what I've got so far. Thanks anyway, keep up the awesome projects!Unknownhttps://www.blogger.com/profile/11163933831286261901noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-86306580890097379962010-04-02T09:47:31.668-07:002010-04-02T09:47:31.668-07:00Hey I guess you've probably moved on from this...Hey I guess you've probably moved on from this project, but I was wondering if you could tell me how you did the pitch bend mentioned in this modification? I've tried a power starve on my own PT100, which does drop the pitch, but not smoothly, so any advice would be really useful on making a more theremin like pitch bend control. Love all your other projects,<br /><br />AleksUnknownhttps://www.blogger.com/profile/11163933831286261901noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-50314938599716957722010-02-24T16:00:48.264-08:002010-02-24T16:00:48.264-08:00Hi,
I was wondering if you could help me. I have ...Hi,<br />I was wondering if you could help me. I have this exact same keyboard (Casio PT-100). I recently bought it at a second hand store. It won't power up and I'm dying to unlock it's nifty 80's sound. My power source is 7.5 DC, and I opened it up to check the solder points, but I just don't know what's wrong. Any help would be greatly appreciated.<br /><br />Thanks,<br />Mike Pettella<br />mpettella@cox.netAnonymoushttps://www.blogger.com/profile/17865643934728555180noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-33133746679299346432009-07-26T22:36:29.116-07:002009-07-26T22:36:29.116-07:00Hey, remember how I said I was looking for PT-100 ...Hey, remember how I said I was looking for PT-100 bends? Well I just finished bending mine today, I'm really pleased with the way it came out. I took a page out of your book when I made the schematic, splicing the pictures together. I think I found some original bends too! Check it out here:<br /><br />http://arcturusbtw.com/instruments/casiopt100/casiopt100.htmlDonaldhttps://www.blogger.com/profile/13928881797450728108noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-47902509873365988132009-04-03T17:33:00.000-07:002009-04-03T17:33:00.000-07:00VCF stands for voltage controlled filter. it prett...VCF stands for voltage controlled filter. it pretty much implies that the filter can be modulated by envelope generators or LFO's(low frequency oscillator), or anything with a CV(control voltage)out. there are many different VCF's you could build, but each will most likely need to be adapted to the instrument you are modding. as far as LFO's, i'd recommend downloading the ne555 datasheet(the biggest file you can find). it will have examples of application circuits in it. i use the 555 and the 556 a lot, but you could use op-amps too. just start googling, you'll find lots.heidihttps://www.blogger.com/profile/06068487707757120472noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-51251992559959175772009-04-03T12:46:00.000-07:002009-04-03T12:46:00.000-07:00woah. well uh good for noys toise.nt where did you...woah. well uh good for noys toise.<BR/><BR/>nt where did you learn, or get the schematics for filters and oscillators? is there like a sweet electronics book that could help me with that? what's a vcf?Unknownhttps://www.blogger.com/profile/14487391908692589891noreply@blogger.comtag:blogger.com,1999:blog-7146046303846422761.post-50458543502653013142009-03-30T20:35:00.000-07:002009-03-30T20:35:00.000-07:00sorry friend, better luck next time. in the meanti...sorry friend, better luck next time. in the meantime you should relax and make use of what you've got. life's too short for namecalling, y'know?TANNER GALVINhttps://www.blogger.com/profile/17540732491143180008noreply@blogger.com