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dnny
Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8
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 Posted: Wed Nov 23, 2005 4:09 am Post subject:
BendControl sequencer |
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mikmo has made this super sequencer that is based on two4066 ( Quad Bilateral Switch) also 4016
can be used. it is controlled from parallel port of a computer. and it has amazing pich control.
| Quote: | | Besides the actual interface, the system consists of a sequencer program written in Visual Basic,and a photocell for pitch control mounted in a plastic tube and placed in front of the computer monitor so the sequencer can control the amount of light reaching it, by changing the colour of a square area the photocell can "see" through the tube |
the interface is very simple only two IC´s
take a further look to it on mikmos page:
Details of the interface
Details of the pitch control
The sequencer
daniel
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dnny
Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8
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| Posted: Wed Nov 30, 2005 6:32 am Post subject:
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well here it is ...
my BendControll interface
it has 8 RCA connectors for connecting whit different toys - the toys will have RCA connectors also.
the unit is powered whit 9V battery and there are one 7805(Voltage Regulator) to get 5V from 9V.
soon... sound samples
dnny
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Mikmo
Joined: Dec 01, 2005
Posts: 150
Location: Copenhagen - Denmark
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| Posted: Thu Dec 01, 2005 3:36 am Post subject:
BendControl sequencer |
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Thanks for posting all these nice words about my sequencer.
Nice interface you build, just remember one very important thing.
If you run the 4066 IC's from 5V you can not switch anything higher than 5 Volts.
The voltage over the switches must be less than or equal to the supply voltage to the 4066 IC's.
I know my website is a little unclear about this, i'll update it tonight. You can run the 4066 ICs from a supply voltage up to (absolute max.) 20 V.
If you are going to switc stuff higher than 5 Volts you should use a higher supply voltage for the IC's, otherwise they can fry.
Mikael |
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dnny
Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8
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| Posted: Thu Dec 01, 2005 5:33 am Post subject:
Re: BendControl sequencer |
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| Mikmo wrote: | | Thanks for posting all these nice words about my sequencer. |
Thanks to you, for making the hard work (programming, etc.)
and giving it to DIY-people.
| Mikmo wrote: | The voltage over the switches must be less than or equal to the supply voltage to the 4066 IC's.
If you are going to switch stuff higher than 5 Volts you should use a higher supply voltage for the IC's, otherwise they can fry.
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that's what happened to me yesterday  . i tried to switch 6V under 5V and that fried the IC´s ...but - this is the most familiar way of learning for me - so i just ripped the 7805 out and i have few extra 4066 so ... no harm done - i can and i will get it to work - and i need to tweak the toys i have - - but soon il have some sound samples -
Welcome to electro-music forum Mikmo
daniel
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Brakka
Joined: Dec 04, 2005
Posts: 1
Location: USA
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| Posted: Mon Dec 12, 2005 2:19 am Post subject:
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That is very cool. 
I'd really like a USB VST version of that. 
What about a web browser interface? Simplified hardware with only the light sensors could work on any computer. A java interface could be interesting. |
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Macaba
Joined: Jul 13, 2005
Posts: 160
Location: UK
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| Posted: Sat Dec 17, 2005 3:46 pm Post subject:
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| Brakka wrote: |
I'd really like a USB VST version of that.
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Haha, you and me both. I've been researching quite a lot to try and find a simple solution for getting two 8/10-bit inputs into a USB port. Its NOT EASY!!  |
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Gimpoid
Joined: Jul 19, 2006
Posts: 5
Location: Ireland
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| Posted: Tue Aug 01, 2006 8:13 pm Post subject:
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i saw this sequencer and was very keen to implement it but the only downside is you need to run it from an old laptop or something as it can burn out the parallel port rendering the motherboard of the computer useless on some occassions .  a usb solution would most likelly sort this out any updates on that macaba?
props to you mikmo for pioneering such sweet electronic hybrib freakery.  |
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jksuperstar
Joined: Aug 20, 2004
Posts: 2503
Location: Denver
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Mikmo
Joined: Dec 01, 2005
Posts: 150
Location: Copenhagen - Denmark
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| Posted: Wed Aug 02, 2006 1:47 am Post subject:
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Let me clarify things a bit.
I have never damaged, or heard of anybody else damaging a parallel port on any computer running the sequencer software with the simple interface.
I just wrote the warning to guide peoples attention to the fact that in theory it could happen.
The elegant solution would be to put an opto coupler between the par. port and the 4066 IC's, maybe even a 100 Ohm resistor in each of the datalines to prevent high currents from entering the par. port. That should minimize the already little risk of damaging the computer.
I'm not sure a USB -> Par. port converter will work. The sequencer program writes directly to the par. port control registers, so if they are not somehow mimicked by the USB converter i don't think it will work. But if the converter comes with a driver that makes it present itself as a par. port to Windows, it could work.........
If any body tries this i wold really like to now about the results.
I am working on a new interface that will allow control of many more switches, and potentially also other things. My wishlist includes the possibility to control switches, put out gates and triggers and put out CV's. But it's in the very early stages of "conceptualization", and i'm not sure i can figure everything out. It will require some new software to control it.
I'm trying to figure out a way to use USB in sted of the par. port, but it seems that programming the USB interface is much more complicated than programming the good old par. port, so i will probably stick with the par. port for starters, but try to make it "modular" so it could be changed to USB when i get smarter
I am also planning on a new "sequencer" that would be more "timeline" than "pattern" oriented. Maybe a winter project in the new electronics workshop i'm in the middle of setting up in my outhouse.
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Stay Cool
Mikael
http://www.mikmo.dk |
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flowersniffer7
Joined: Nov 17, 2006
Posts: 53
Location: Allentown PA
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| Posted: Wed Jan 03, 2007 5:33 am Post subject:
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I have been trying to figure out if that would within MaxMSP... I couldn't find a Max object that could communicate with the parallel port, though rumor has it, there was at one point an object that did do that... Anyway, I found the two links below and I haven't shelled out the cash for the usb cable... and I haven't quite figured out how that would work... but if it does that patch could easily be made into a VST with pluggo... If anybody could offer any tips about how to go about doing this I would greatly appreciate it and it would probobly be beneficial to all of us!
http://www.bmcm.de/ger/pr-usb-pio.html
http://www.akustische-kunst.org/maxmsp/ |
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Lofi Ninja
Joined: Oct 25, 2008
Posts: 143
Location: Jupiter
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| Posted: Wed Jun 10, 2009 1:01 pm Post subject:
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Sry for opening old post...
I have a problem with my 4066's
I'm powering the 4066's with the power from the toy I'm using for testing, so no "over-volting" The switches is just continusly on. I've tried with several 4066's. And my LPT port is not dead.
Also I've tried with both 100ohm resistors and 1n4148's on the output's of the LPT port.
What am I doing wrong here...?
Mikmo was talking something about the bend control software being a specific adress and my physical lpt port being another... how do I find the one of the program so I can change my settings ? This might be my problem..
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electri-fire
Joined: Jul 26, 2006
Posts: 536
Location: Dordrecht NL
Audio files: 4
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| Posted: Mon Jun 15, 2009 1:12 pm Post subject:
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| Maybe you need a common ground? |
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imaguitargod
Joined: Jun 14, 2008
Posts: 56
Location: Cleveland
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| Posted: Wed Jun 17, 2009 6:13 am Post subject:
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| electri-fire wrote: | | Maybe you need a common ground? |
That's a good point. Find out what it's intrests are, like, does it like pop culture or noise music.....oh wait....you ment a common electrical ground.....
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electri-fire
Joined: Jul 26, 2006
Posts: 536
Location: Dordrecht NL
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| Posted: Sat Jun 20, 2009 12:07 pm Post subject:
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As i am dutch the intricacies of the english language escape me. I meant zero volt ground indeed.
Neither am I an electronics wizz, but i've had the experience of inexplicable malfunctions between devices that were solved by connecting both grounds (zero voltage) together.
Ninja wrote; I'm powering the 4066's with the power from the toy I'm using for testing, so no "over-volting"...
so, err... you never know, easy to try connecting the computer ground as well. |
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Lofi Ninja
Joined: Oct 25, 2008
Posts: 143
Location: Jupiter
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| Posted: Sat Jun 20, 2009 3:39 pm Post subject:
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The ground from the lpt port is connected aswell so that's not the problem.. I'm still waiting to hear from Mikmo..
Electri-fire: Sry, I never got back to you about the bending workshops.. I've tried to get money to go, but it's just too expensive to travel. How's the shops been so far ? And is there some videos somewhere?
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droffset
Joined: Feb 02, 2009
Posts: 515
Location: London area
Audio files: 2
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| Posted: Tue Aug 18, 2009 3:42 pm Post subject:
Re: BendControl sequencer |
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| Mikmo, found this on your website by chance when searching for info about the 4066. Great idea, will definitely try to get something going with it! |
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electri-fire
Joined: Jul 26, 2006
Posts: 536
Location: Dordrecht NL
Audio files: 4
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| Posted: Wed Sep 30, 2009 12:55 am Post subject:
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| Lofi Ninja wrote: |
I have a problem with my 4066's (......)
The switches is just continusly on. I've tried with several 4066's. And my LPT port is not dead.
Also I've tried with both 100ohm resistors and 1n4148's on the output's of the LPT port.
What am I doing wrong here...? |
I've had this same problem.
You need "pulldown resistors" on the control inputs to facilitate them reaching a zero value.
How? Connect a resistor from the control input to ground. I used 10K resistors, but I've seen values used in schematics as high as 1M.
So with the pulldown resistors it worked again.
Next I added LED's to the outputs of the 4017 decade counter that was driving my 4066's.
Often current amps like a transistor is used for driving LED's from CMOS, but I didn't. Eventhough the 4017 isn't supposed to source a lot of current the LED's were driven to a nice glow without a current limiting resistor, but I had to add one anyway because the switches stopped working again. With a current limiting resistor of 3.7K the voltage from the 4017 outputs was 7.5V (instead of 2.5V without them).
Can this be done safely ? If I fry the 4017 I'll let you know. Comments are welcome.
(Also stabilising CMOS chips is using a "bypass capacitor" near the IC between +V and ground ( something like 0.1mF)). |
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