Search found 78 matches

I eventually solved the problem by purchasing a programmed chip from the author at a very reasonable price!

Many would-be Nobel Laureates have spent huge amounts of effort trying to make sense of the last writings of Albert Einstein. Unfortunately, it appears to have been what might be euphemistically refer ...

Well, it's a long while since I did any PIC programming, but I recall that the configuration data had to be in one part of memory and the program somewhere else. I'm using a Phyton programmer which is ...

thanks for the hint.

did anybody here built the quantizer?

Matthias, did you ever get the ACX quantizer working? Because I'm in a similar situation with programming the PIC chip.

Good news!

Next move will be to make a preamplifier with a really high input impedance - ideally with a field effect transistor input stage. This will boost the signal and significantly improve the ...

Sounds like you're on your way...

The main issue with poor VCAs is not being able to null out the input sound completely. Check that you can set the VCA so that the signal input is inaudible.

Th ...

Oscilloscope:

High-impedance DC voltmeter;
High impedance AC voltmeter;
Frequency meter;
Waveform display;
Timer;
Component tester;
Interference monitor;
Fault tester;
Virtually indestructi ...

An audio interface ought to be fine. They usually have a reasonably high input impedance, which is what you need.

Keep experimenting! You'll get there. Very Happy

If the two piezo elements are receiving exactly the same signal, they will cancel and you will hear nothing - this, however, is very unusual. Try tapping just one or the other, and you should hear som ...

I've pitched this over to the Synthtopia site where it should get some serious interest.

I thought it was my workshop - until I realized that there must be room for a camera.

Good video!

Anyway Mr Dazey, don't punish yourself too much. You have to accept that when you build synth modules, some builds may have to wait for others before you can test them properly. Every time you add a n ...

Oscilloscopes might be a bit of a prop for a lot of people. It makes one feel important and scientific. They are a bit like stethoscopes. I'm sure doctors just wear them to look important.

Certainl ...

Since the ribbon resistance change is linear, the oscillator response must be exponential otherwise the note spacing would change along the ribbon.

If you look at the schematic of the original Monotron (available from Korg) you can see that the supplies are unipolar throughout (0V and +5V). Vbias acts as a "mid-point" voltage reference ...

I agree, the CPC / Farnell search engine is hopeless.

This isn't the exact one that I ordered, but it looks like it has replaced the Spectrasymbol part:

http://uk.farnell.com/multicomp/sp-l-0500 ...

Well, you got a reply from Paia - they ignored my enquiry.

I gave up temporarily in frustration and haven't revisited it since. Suffice to say that the published circuit doesn't work. I fixed a few ...

Okay, update - slight impedance issue overcome. The voltages controlling the switch control inputs on the 4066 are actually operating between -0.7 V (off state) and +5.8 V (on state), which, although ...

I'm sure that this question should have been asked elsewhere, but I've searched and can't find anything relevant. The question is:

"Has anyone ever successfully built John Simonton's two-note ...

Thanks!

I forgot to mention that I used quarter-inch jacks because they're cheap, robust, reliable, compatible with everything else in the studio, and you can buy ready-made patch cords cheaply in ...

The design criteria for 'The Mightier Mirlitzer' are as follows:

1. Keep it simple. Some of the modules are primitive but effective.

2. Each cabinet is approximately two feet wide and accommodat ...

Okay, high time I unveiled the project that has been keeping me occupied for the last 18 months - behold The Mightier Mirlitzer (I prematurely named my Sound Lab 'The Mighty Mirlitzer' and now have to ...

Is Marc Bareille not known to post here occasionally?

It seems your pin assignments are correct, so this has me foxed. I still think that the phototransistor must need a current-limiting resistor.

I'll keep pondering and get back to you if anything sp ...

Worryingly, there are a number of inconsistencies with that schematic. The data sheets don't show a diode in series with the phototransistor, which suggests that he didn't originally use a 4N28 (hence ...

Author	Message
Topic: Problems with Acoupel Midi > CV Pic program
MirlitronOne Replies: 75 Views: 43920	Posted: Tue Nov 03, 2015 5:44 pm Subject: Problems with Acoupel Midi > CV Pic program Forum: DIY Hardware and Software
MirlitronOne Replies: 75 Views: 43920	I eventually solved the problem by purchasing a programmed chip from the author at a very reasonable price!
Topic: Paia two-note ribbon controller
MirlitronOne Replies: 12 Views: 25649	Posted: Sun Oct 21, 2012 4:07 pm Subject: Paia two-note ribbon controller Forum: DIY Hardware and Software » PAIA Equipment
MirlitronOne Replies: 12 Views: 25649	Many would-be Nobel Laureates have spent huge amounts of effort trying to make sense of the last writings of Albert Einstein. Unfortunately, it appears to have been what might be euphemistically refer ...
Topic: Problems with Acoupel Midi > CV Pic program
MirlitronOne Replies: 75 Views: 43920	Posted: Wed Aug 29, 2012 3:11 pm Subject: Problems with Acoupel Midi > CV Pic program Forum: DIY Hardware and Software
MirlitronOne Replies: 75 Views: 43920	Well, it's a long while since I did any PIC programming, but I recall that the configuration data had to be in one part of memory and the program somewhere else. I'm using a Phyton programmer which is ...
Topic: Problems with Acoupel Midi > CV Pic program
MirlitronOne Replies: 75 Views: 43920	Posted: Wed Aug 29, 2012 10:23 am Subject: Problems with Acoupel Midi > CV Pic program Forum: DIY Hardware and Software
MirlitronOne Replies: 75 Views: 43920	thanks for the hint. did anybody here built the quantizer? Matthias, did you ever get the ACX quantizer working? Because I'm in a similar situation with programming the PIC chip.
Topic: Help with XLR contact mic
MirlitronOne Replies: 10 Views: 4906	Posted: Mon Jul 09, 2012 3:54 pm Subject: Help with XLR contact mic Forum: DIY Hardware and Software
MirlitronOne Replies: 10 Views: 4906	Good news! Next move will be to make a preamplifier with a really high input impedance - ideally with a field effect transistor input stage. This will boost the signal and significantly improve the ...
Topic: Silly boy
MirlitronOne Replies: 36 Views: 26261	Posted: Thu Jul 05, 2012 3:07 am Subject: Silly boy Forum: DIY Hardware and Software
MirlitronOne Replies: 36 Views: 26261	Sounds like you're on your way... The main issue with poor VCAs is not being able to null out the input sound completely. Check that you can set the VCA so that the signal input is inaudible. Th ...
Topic: Silly boy
MirlitronOne Replies: 36 Views: 26261	Posted: Wed Jul 04, 2012 12:24 pm Subject: Silly boy Forum: DIY Hardware and Software
MirlitronOne Replies: 36 Views: 26261	Oscilloscope: High-impedance DC voltmeter; High impedance AC voltmeter; Frequency meter; Waveform display; Timer; Component tester; Interference monitor; Fault tester; Virtually indestructi ...
Topic: Help with XLR contact mic
MirlitronOne Replies: 10 Views: 4906	Posted: Wed Jul 04, 2012 12:14 pm Subject: Help with XLR contact mic Forum: DIY Hardware and Software
MirlitronOne Replies: 10 Views: 4906	An audio interface ought to be fine. They usually have a reasonably high input impedance, which is what you need. Keep experimenting! You'll get there.
Topic: Help with XLR contact mic
MirlitronOne Replies: 10 Views: 4906	Posted: Tue Jul 03, 2012 3:03 pm Subject: Help with XLR contact mic Forum: DIY Hardware and Software
MirlitronOne Replies: 10 Views: 4906	If the two piezo elements are receiving exactly the same signal, they will cancel and you will hear nothing - this, however, is very unusual. Try tapping just one or the other, and you should hear som ...
Topic: KOELSE - the Association of Experimental Electronics
MirlitronOne Replies: 3 Views: 1700	Posted: Mon Jul 02, 2012 5:05 pm Subject: KOELSE - the Association of Experimental Electronics Forum: DIY Hardware and Software
MirlitronOne Replies: 3 Views: 1700	I've pitched this over to the Synthtopia site where it should get some serious interest.
Topic: KOELSE - the Association of Experimental Electronics
MirlitronOne Replies: 3 Views: 1700	Posted: Sun Jul 01, 2012 2:35 pm Subject: KOELSE - the Association of Experimental Electronics Forum: DIY Hardware and Software
MirlitronOne Replies: 3 Views: 1700	I thought it was my workshop - until I realized that there must be room for a camera. Good video!
Topic: Silly boy
MirlitronOne Replies: 36 Views: 26261	Posted: Sat Jun 30, 2012 5:49 am Subject: Silly boy Forum: DIY Hardware and Software
MirlitronOne Replies: 36 Views: 26261	Anyway Mr Dazey, don't punish yourself too much. You have to accept that when you build synth modules, some builds may have to wait for others before you can test them properly. Every time you add a n ...
Topic: Silly boy
MirlitronOne Replies: 36 Views: 26261	Posted: Sat Jun 30, 2012 5:38 am Subject: Silly boy Forum: DIY Hardware and Software
MirlitronOne Replies: 36 Views: 26261	Oscilloscopes might be a bit of a prop for a lot of people. It makes one feel important and scientific. They are a bit like stethoscopes. I'm sure doctors just wear them to look important. Certainl ...
Topic: Monotron Duo.
MirlitronOne Replies: 55 Views: 94468	Posted: Sat Apr 28, 2012 11:09 am Subject: Monotron Duo. Forum: DIY Hardware and Software
MirlitronOne Replies: 55 Views: 94468	Since the ribbon resistance change is linear, the oscillator response must be exponential otherwise the note spacing would change along the ribbon.
Topic: Monotron Duo.
MirlitronOne Replies: 55 Views: 94468	Posted: Wed Feb 29, 2012 10:19 am Subject: Monotron Duo. Forum: DIY Hardware and Software
MirlitronOne Replies: 55 Views: 94468	If you look at the schematic of the original Monotron (available from Korg) you can see that the supplies are unipolar throughout (0V and +5V). Vbias acts as a "mid-point" voltage reference ...
Topic: Paia two-note ribbon controller
MirlitronOne Replies: 12 Views: 25649	Posted: Sun Feb 26, 2012 4:50 pm Subject: Paia two-note ribbon controller Forum: DIY Hardware and Software » PAIA Equipment
MirlitronOne Replies: 12 Views: 25649	I agree, the CPC / Farnell search engine is hopeless. This isn't the exact one that I ordered, but it looks like it has replaced the Spectrasymbol part: http://uk.farnell.com/multicomp/sp-l-0500 ...
Topic: Paia two-note ribbon controller
MirlitronOne Replies: 12 Views: 25649	Posted: Fri Feb 24, 2012 5:05 pm Subject: Paia two-note ribbon controller Forum: DIY Hardware and Software » PAIA Equipment
MirlitronOne Replies: 12 Views: 25649	Well, you got a reply from Paia - they ignored my enquiry. I gave up temporarily in frustration and haven't revisited it since. Suffice to say that the published circuit doesn't work. I fixed a few ...
Topic: Paia two-note ribbon controller
MirlitronOne Replies: 12 Views: 25649	Posted: Tue Jan 03, 2012 3:55 pm Subject: Paia two-note ribbon controller Forum: DIY Hardware and Software » PAIA Equipment
MirlitronOne Replies: 12 Views: 25649	Okay, update - slight impedance issue overcome. The voltages controlling the switch control inputs on the 4066 are actually operating between -0.7 V (off state) and +5.8 V (on state), which, although ...
Topic: Paia two-note ribbon controller
MirlitronOne Replies: 12 Views: 25649	Posted: Tue Jan 03, 2012 12:50 pm Subject: Paia two-note ribbon controller Forum: DIY Hardware and Software » PAIA Equipment
MirlitronOne Replies: 12 Views: 25649	I'm sure that this question should have been asked elsewhere, but I've searched and can't find anything relevant. The question is: "Has anyone ever successfully built John Simonton's two-note ...
Topic: 2011 Build Pictures
MirlitronOne Replies: 452 Views: 556493	Posted: Sun Jul 31, 2011 12:14 pm Subject: 2011 Build Pictures Forum: DIY Hardware and Software
MirlitronOne Replies: 452 Views: 556493	Thanks! I forgot to mention that I used quarter-inch jacks because they're cheap, robust, reliable, compatible with everything else in the studio, and you can buy ready-made patch cords cheaply in ...
Topic: 2011 Build Pictures
MirlitronOne Replies: 452 Views: 556493	Posted: Sun Jul 31, 2011 9:36 am Subject: 2011 Build Pictures Forum: DIY Hardware and Software
MirlitronOne Replies: 452 Views: 556493	The design criteria for 'The Mightier Mirlitzer' are as follows: 1. Keep it simple. Some of the modules are primitive but effective. 2. Each cabinet is approximately two feet wide and accommodat ...
Topic: 2011 Build Pictures
MirlitronOne Replies: 452 Views: 556493	Posted: Sun Jul 31, 2011 9:14 am Subject: 2011 Build Pictures Forum: DIY Hardware and Software
MirlitronOne Replies: 452 Views: 556493	Okay, high time I unveiled the project that has been keeping me occupied for the last 18 months - behold The Mightier Mirlitzer (I prematurely named my Sound Lab 'The Mighty Mirlitzer' and now have to ...
Topic: Midi Clock Converter/Divider MC628 Overheating??
MirlitronOne Replies: 8 Views: 3456	Posted: Fri Jul 29, 2011 1:00 pm Subject: Midi Clock Converter/Divider MC628 Overheating?? Forum: DIY Hardware and Software
MirlitronOne Replies: 8 Views: 3456	Is Marc Bareille not known to post here occasionally?
Topic: Midi Clock Converter/Divider MC628 Overheating??
MirlitronOne Replies: 8 Views: 3456	Posted: Thu Jul 28, 2011 4:37 pm Subject: Midi Clock Converter/Divider MC628 Overheating?? Forum: DIY Hardware and Software
MirlitronOne Replies: 8 Views: 3456	It seems your pin assignments are correct, so this has me foxed. I still think that the phototransistor must need a current-limiting resistor. I'll keep pondering and get back to you if anything sp ...
Topic: Midi Clock Converter/Divider MC628 Overheating??
MirlitronOne Replies: 8 Views: 3456	Posted: Wed Jul 27, 2011 5:10 pm Subject: Midi Clock Converter/Divider MC628 Overheating?? Forum: DIY Hardware and Software
MirlitronOne Replies: 8 Views: 3456	Worryingly, there are a number of inconsistencies with that schematic. The data sheets don't show a diode in series with the phototransistor, which suggests that he didn't originally use a 4N28 (hence ...