Roald Baudoux

Could anyone tell me what is the maximum reliable length for a basic 

Could anyone tell me what is the maximum reliable length for a basic  
footswitch cable?

ot-analog-footswitch-cables-maximum-length

Quote: Roald Baudoux wrote on Mon, 26 March 2007 23:48

----------------------------------------------------

> Could anyone tell me what is the maximum reliable length for a basic 

Longer than you need. (Depending on the gauge of the wire you use, and the amps output by the thing you're plugging into.)

More technically, you could look at a "Voltage Drop Calculator"** to see how much resistance the wire in your circuit has. Remember that the signal goes out and comes back. The effect is fairly small, a kilometer of 16 gauge wire has a resistance of about 13.4 ohms. If you have super-long cable, you could send a higher voltage/amperage signal through it. Since most of these controllers are looking for 5v (some 3.3v), you could certainly get a long run using a 9v battery. I would check to voltage with a multimeter before I plugged into an expensive device, though.

http://www.stealth316.com/2-wire-resistance.htm

Quote: Roald Baudoux wrote on Mon, 26 March 2007 23:48
----------------------------------------------------
> Hello,
>
> Could anyone tell me what is the maximum reliable length for a basic  
> footswitch cable?
>
> Roald Baudoux
>
----------------------------------------------------

More technically, you could look at a "Voltage Drop Calculator"** to see how much resistance the wire in your circuit has.  Remember that the signal goes out and comes back.  The effect is fairly small, a kilometer of 16 gauge wire has a resistance of about 13.4 ohms.  If you have super-long cable, you could send a higher voltage/amperage signal through it.  Since most of these controllers are looking for 5v (some 3.3v), you could certainly get a long run using a 9v battery.  I would check to voltage with a multimeter before I plugged into an expensive device, though.

See:
** http://www.stealth316.com/2-wire-resistance.htm

It should be fine to send it around the world... ;-)

But you might ask because of problems you encountered?

I once made a cable for a footswitch to plug into a controller input. My 

theory was it would only output 127 or 0 as value. But inbetween the two 

positions, there was a problem. Kind of undefined state, where it 

dependes a lot how the input circuit is designed. But this is (almost) 

independent of the length of the cable...

My solution was, beside a split object, to prevent double triggers 

Roald Baudoux schrieb:
> Could anyone tell me what is the maximum reliable length for a basic 
> footswitch cable?

But you might ask because of problems you encountered?
I once made a cable for a footswitch to plug into a controller input. My 
theory was it would only output 127 or 0 as value. But inbetween the two 
positions, there was a problem. Kind of undefined state, where it 
dependes a lot how the input circuit is designed. But this is (almost) 
independent of the length of the cable...

My solution was, beside a split object, to prevent double triggers 
within Max...

-- 
Stefan Tiedje------------x-------
--_____-----------|--------------
--(_|_ ----|-----|-----()-------
-- _|_)----|-----()--------------
----------()--------www.ccmix.com


On 28 mars 07, at 11:39, Stefan Tiedje wrote:

>> Could anyone tell me what is the maximum reliable length for a basic 

> It should be fine to send it around the world... ;-)

> My solution was, beside a split object, to prevent double triggers 

With switches, preventing double triggger is something that should 

The length of the cable of a footswitch shouldn't be a problem if the 

But if you plug it on a CV input (thru some basic wiring), then the 

length may be a problem: with 25m, the MIDI controller value I had was 

125 rather than 127. In that case, instead of checking [sel 127], you 

should rather use something like [> 120] (depending on the polarity of 

Centre de Recherches et de Formation Musicales de Wallonie asbl

> Roald Baudoux schrieb:
>> Could anyone tell me what is the maximum reliable length for a basic 
>> footswitch cable?
>
> It should be fine to send it around the world... ;-)

> My solution was, beside a split object, to prevent double triggers 
> within Max...

With switches, preventing double triggger is something that should 
always be done.

The length of the cable of a footswitch shouldn't be a problem if the 
switch is plugged into a sustain input.

But if you plug it on a CV input (thru some basic wiring), then the 
length may be a problem: with 25m, the MIDI controller value I had was 
125 rather than 127. In that case, instead of checking [sel 127], you 
should rather use something like [> 120] (depending on the polarity of 
the pedal).

_____________________________
Patrick Delges

Centre de Recherches et de Formation Musicales de Wallonie asbl
http://users.skynet.be/crfmw/max


[OT] analog footswitch cable's maximum length?