Experimental controllers sensors ribbons et cetera

[clem!]

Hi all!

What about starting little experiments with alternate controllers and sensors.

Maybe at first we can sample the resistance of different video tapes (I´ve found some old panasonic ones), we can also measure adhesive metal tapes or other materials like different graphit-finishs and put the´samples together into a database.

Don´t know if this is the right place to do that - any suggestions.

Hope there´s s.o. else.

[rosch]

i've tested some antistatic nylon bag in which ICs are packed for use as a ribbon controller. i haven't completed this project until now because my main circuits didn't work (psu?).

it has the required resistance of 100 kohms when cut to a band of about 20cm / 1cm. these were recommended for a diy belt controller project, the builder did it with adhesive tape and graphite powder and a brass strip, i intended to use this nylon with a violin string.

the website i found the original circuit with the adhesive tape has some very interesting projects with vacuum tubes:

http://www.electronicpeasant.com/

[stryd_one]

Don´t know if this is the right place to do that

Sure is!

[philetaylor]

the website i found the original circuit with the adhesive tape has some very interesting projects with vacuum tubes:

http://www.electronicpeasant.com/

What an interesting site, I love the "slinky" reverb :)

EDIT: Not sure about beads from a beaded seat cover used as knobs for potentiometers though......

[bosone]

Hi all!

Maybe at first we can sample the resistance of different video tapes (I´ve found some old panasonic ones), we can also measure adhesive metal tapes or other materials like different graphit-finishs and put the´samples together into a database.

http://www.alchemystudio.it/Strumenti/ACSensorizer/ACSensorizer_en.html

[stryd_one]

Hahah that was my first thought and I didn't post it... my stupid memory :) ACSensorizer is midibox stuff and you can find goodies on our wiki/forums too...

AudioCommander has done great work with this, it's a must-see for alternative controls.

[clem!]

First samples of video-tapes:

Manufacturer;      Format;        Type;             Resistance per 10 cm;

Panasonic;           MII;              AU-M60L;       11 M;

Panasonic;           S-VHS;          XD;               4,3 M;

Sony;                 Betacam SP;   BCT-30MA      4,6 M;

Panasonic;           S-VHS;          SE-30;          7,8 M;

Kodak;                VHS;            HS-E240;        2,3 M;

TDK;                   VHS;             E-240TV;       -;

TDK;                   VHS;             EHG;             -;

Akai;                   VHS;             HQ;              -; 

Agfa;                  VHS;             S-HGX;          -;          

[clem!]

Hi all,

found another one - this is as somewhere else told a scotch consumer one.

Manufacturer;      Format;        Type;             Resistance per 10 cm;

Scotch;              VHS;            EXG+;             37 K;

looks much better!

clem!

[rosch]

Resistance per 10 cm          37 K

looks much better!

hi clem!

which resistor value/length are you looking for, what would be the best?

do you prefer video tape (bec. availability)?

perhaps i could measure some old multitrack and stereo recording tape too.

but i actually think those tapes would easily wear down after short use because you'd always have to press a metallic surface on a very thin layered film...

[clem!]

hi rosch,

first project is to build a controller with the full length of a keybord with 61 standard keys for my keyboardcontroller-midification-project. That means 10 k at ~86 cm.

But "I have a dream" for the next project - of building a continuus-polyphonic-velocity-sensitive-(midi)-controller (schoene Wortkreation) for small money like the continuum at haken audio which costs megas.

Maybe we can find s.t. like graphite-cotton ;) mmh.

So let´s test everything we can find and put the information together.

clem!

[bosone]

i replaced today my home made ribbon sensor with a spectra symbol softpot (30 cm long).

it is much more reliable and precise.

for a ribbon controller, i'd suggest the soft pot solution + the AC sensorizer...

[TheAncientOne]

If you want all the way analogue, take a look at this: http://www.electro-music.com/forum/topic-28138.html

[cimo]

mmmm spectrabeatnils

[clem!]

hi there,

interesting video. Are there some infos about the making of this controlribbon.

I have googled a little bit about "konstantan" and found this:

http://www.spulen.com/shop/product_info.php?products_id=543

Who has sampled experience with resistor-wire-controlers.

Best regards

clem!

[clem!]

Mmh there´s s.t. better I think:

Isa Chrom 60

http://www.isabellenhuette.de/pdf/WIDER_LEG/DE/ISA-CHROM.pdf

at D=0,011 mm seems to be ideal for an 85 cm  Wire-Controler

another one is Isaohm

http://www.isabellenhuette.de/pdf/WIDER_LEG/ISAOHM-ISABELLENHUETTE-R.pdf

at D=0,01

but where can I buy it as an end-user ???

[stryd_one]

Who has sampled experience with resistor-wire-controlers.

I've seen them used in basic flight control systems... It works like you'd think, just a wire with high resistance.

As for sourcing it... I'll let you do the hunt, good luck :)

[SLP]

but where can I buy it as an end-user ???

Conrad.

Home >  Components & Kits > Passive Components > Resistors > Other Resistors > Resistor wires 

There's only one wire called "isachrome"

10 m isachrom 60 resistance wire (5.65 ?/m)

[clem!]

hi and thx for the quick respond,

Yes I´ve seen that, but it has a to low resistance.

For our aim, building wire-controlers, we need a diameter of 0,01 mm with a resistance of 11580 Ohm. I think with this wire we can also build shorter controlers of 30 or 15 cm - hope they won´t get to hot  8)

Regards

[DrBunsen]

Toaster wire?

Fuse wire?

[stryd_one]

we need a diameter of 0,01 mm

That's *very* thin... are you sure?

[clem!]

Toaster wire?

Good idea!

... there must be ... somewhere ... a broken toaster

That's *very* thin... are you sure?

of course it´s thin, but if we fix it on a plastic strip it must work - I hope so - if not we need a wire  with a bigger diameter made of other material.

clem!

[TheAncientOne]

This company in the UK sell a large range of resistance wires, though they are not that cheap.

I've bought from them in the past to make foam cutters.

http://www.wires.co.uk/acatalog/nc_bare.html

They are a subsidiary of this company http://www.scientificwire.com/

[clem!]

long time ago but I found this:

Block RD50 / 0.2

http://www.produktinfo.conrad.com/datenblaetter/400000-424999/422548-da-01-ml-WIDERSTANDSDRAHT_BLOCK_RD100_2_0_de_en.pdf