Guest moog Posted January 7, 2005 Report Posted January 7, 2005 hello AllI was looking at small diagram of a circuit of a 1 control thermin . It has a 5v ouput ^_____^Wouldnt it be nice to somehow set a board to hook it up to mios , to control a synth ??tell me what you think...http://www.thereminworld.com/pics/schematics/simple.jpg Quote
pay_c Posted January 7, 2005 Report Posted January 7, 2005 No problem *I think*, because:The AIN is also based on 0V/5V, so you can hook that theremin up directly to the input pin of any AIN input. If you look at the schematics, the pots are connected to GND and 5 Volt, the middle pin going to the AIN. Instead of that middle pin, connect that theremin.Just be sure to use the SAME GROUND!! Otherwise you could have fireworks.Anyhow, good luck! Quote
rambinator Posted January 9, 2005 Report Posted January 9, 2005 Hi!I was thinking about this midi-theremin idea quite often after I found out that bob moog doesn't build them anymore... but I've never gone beyond thinking about it :)So please tell me if you find out anything regarding this subject.cheers,rambinator Quote
Duggle Posted January 9, 2005 Report Posted January 9, 2005 Hi,MBHP AIN modules convert 0-5V DC into CC's (0 to 127).This circuit produces a square wave 9Vpp. A Frequency to Voltage IC (or other circuit) could be used to convert this into a MBHP useable signal.cheers Quote
Guest moog Posted January 10, 2005 Report Posted January 10, 2005 is there a way we can make it send note on msges instead of control menssages ? Quote
Guest moog Posted January 10, 2005 Report Posted January 10, 2005 when i first saw tis schematic , i thougth instantaniously in make a midi theremin with it...My idea was make it send "note on" menssage instead of CC's , then i could control a synth or vst Instrument ..If there is someone interested in this , please contact me so we can get it togther.... Quote
TK. Posted January 10, 2005 Report Posted January 10, 2005 MIDIbox64 can also output MIDI notes when you turn a pot :)Best Regards, Thorsten. Quote
rambinator Posted January 11, 2005 Report Posted January 11, 2005 one reason why i didn't investigate any further in this subject is that i don't know what one can expect from these "simple" theremin-schematics available on the net, concerning octave range sensitivity etc. i know there are also professional kits available but they are quite pricey...anyone there with experience with a circuit like the one posted by moog? Quote
cheater Posted January 11, 2005 Report Posted January 11, 2005 Seriously? It'll always be just for fun. Sure, it's cool, but trying to make a stable performance on something like that could drive you insane. Quote
Duggle Posted January 11, 2005 Report Posted January 11, 2005 One way of interfacing such a circuit is to connect the square wave to the CCP1 or CCP2 pin of a PIC and perform a capture (period measurement). This is to provide a frequency measurement. Program logic would use changes in pitch to trigger different notes. Could integrate pitch bend. This requires good level of programming skill. Due to pin and other resource allocations MIOS may not be an option for such an application.cheers[edit]hi moog,the point being that the circuit you posted outputs an AC signal, whereas Midibox uses "changing DC" input.Tracking an AC signal is more involved. It's doable but the Midibox platform has no existing interface for such a signal (as yet).cheers Quote
Guest moog Posted January 11, 2005 Report Posted January 11, 2005 thanx Thorsen .. Thanx guys...So...now i understand better... I will trie to came up with something soon...Probably including a wien bridge and some freq to voltage ic ..But any design idea would be apreciated , specialy because i think thre migth be a simpler way...Saludos desde CHile Quote
Guest moog Posted January 11, 2005 Report Posted January 11, 2005 HOld ON...I will just rectifie the square Or a short sample and hold^__________^ Quote
moebius Posted January 11, 2005 Report Posted January 11, 2005 HOld ON...I will just rectifie the square  Or a short sample and holdYou sure it works THAT way? ;DBut hey - PAiA Theremax has CV outs and it's available as a kit, bare PCB and the schematics are online.http://www.paia.com/theremax.htmBye, Moebius Quote
Guest moog Posted January 11, 2005 Report Posted January 11, 2005 ohh yes... i was working with theremax , but , it seems like the Pbc thats avaliable online , does not match the component side of the pcb...... most of the part are the same , but some of them dont match.... so im stuck with that proyect....I thougth it would be cool to make a simple solution like the circuit i post....I will make some experiments as soon as i can... Quote
rambinator Posted January 12, 2005 Report Posted January 12, 2005 what do you mean? i also thought about the paia-kit. do you mean you there are note the correct parts in the kit? compared to the manual that is available from their site? Quote
Guest moog Posted January 12, 2005 Report Posted January 12, 2005 no...if you buy the kit...it is okay!!but...few month ago , someone posted a theremax pcb in a website ...that one wasnt the same version as in the documentation....thats all...now i will dessign my own pcb for paia's theremax--because the original is a mess!! ... it has like 30 jumpers !!! Quote
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