I think it is a typo, the datasheet for the ltc 2400 (http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1155,C1001,C1152,P16...) seems to specify, from what I understand, that the output rate is 50 Hz, extendible to 120 Hz with an external clock...
--- En date de : Mer 9.6.10, Jaime Oliver jaime.oliver2@gmail.com a écrit :
De: Jaime Oliver jaime.oliver2@gmail.com Objet: Re: [PD] Looking for a pedal controller À: "Achim Bloch" achim.bloch@yahoo.fr Cc: "pd-list" pd-list@iem.at Date: Mercredi 9 juin 2010, 17h00
it says 5 samples per second. that latency would be unbearable...
On Wed, Jun 9, 2010 at 6:11 AM, Achim Bloch achim.bloch@yahoo.fr wrote:
Hi, and thanks for your answers.
Yes, pduino makes OSC redundant, and a range of values from 0 to 1023 should be enough for most effects, but anyway, in case a wider range is needed, I think the following can be a quite simple solution : http://interface.khm.de/index.php/lab/experiments/connect-a-ltc2400-high-pre...
This converts the analogic signal to a 24-bit value! More than enough I guess. Achim
--- En date de : Mar 8.6.10, Pedro Lopes pedro.lopes@ist.utl.pt a écrit :
De: Pedro Lopes pedro.lopes@ist.utl.pt
Objet: Re: [PD] Looking for a pedal controller À: "Ricardo Lameiro" ricardolameiro@gmail.com Cc: "pd-list" pd-list@iem.at Date: Mardi 8 juin 2010, 21h37
Actually, an arduino is more than enough for what you want. you can have data from 0 to 1023, that is >quite a lot, plus, you can use it directly on puredta using pduino, no need for OSC.
I second that, arduino will do! But if you want to built an "pd-independent" device, you can use OSC in arduino - although much harder than simply reading values with pduino - some guys already posted code for sending OSC messages from arduino devices [1], so then you can plug it to whatever you want: pd, ardour, osc-to-midi apps, processing, supercollider :D
[1] http://recotana.com/recotanablog/?page_id=222%C2%A0(this ships the messages from ethernet cable on the arduino's ethernet shield, but there might be more similar projects that ship from usb)
On Tue, Jun 8, 2010 at 10:24 PM, Ricardo Lameiro ricardolameiro@gmail.com wrote:
Actually, an arduino is more than enough for what you want. you can have data from 0 to 1023, that is quite a lot, plus, you can use it directly on puredta using pduino, no need for OSC.
2010/6/8 Pierre Massat pimassat@gmail.com
A gamepad would definitely be LESS precise as each potentiometer will map data between 0 and 255. But i've never found this to be a problem.
Pierre
2010/6/8 Pierre Massat pimassat@gmail.com
I guess it could, only Arduino is more expensive i suppose. I'll try to provide you with some pictures sometime soon.
Pierre
2010/6/8 Achim Bloch achim.bloch@yahoo.fr
Hi Pierre could you provide more details on how you built your pedal? Could'nt the gamepad be replaced with an Arduino? Thanks, Cyrill
--- En date de : Mar 8.6.10, Pierre Massat pimassat@gmail.com a écrit :
De: Pierre Massat pimassat@gmail.com
Objet: Re: [PD] Looking for a pedal controller À: "Achim Bloch" achim.bloch@yahoo.fr, "pd-list" pd-list@iem.at
Date: Mardi 8 juin 2010, 7h25
Hi Achim, You'll have no latency problems with a USB pedal in Linux using the [hid] object. No "noticeable" latency at least.
There are two problems arising when attempting to built a USB pedal : first you need to actually make the pedal (the traditional cry baby design is probably the easiest way to go), then you need to connect it to a good usb gamepad. I insist on the "good" here because it is essential if you want to have a decent expression pedal. The best would be to test the gamepad before buying it and turning it into a pedal.
Pierre
2010/6/7 Achim Bloch achim.bloch@yahoo.fr
Hi Pierre and thanx for your answer. I am looking for an expression foot controller. Something working somehow like a wah-wah pedal. But I am unsure if I need a device with an OSC dedicated driver, or if any USB pedal would do the job. What I primarily expect from this device is accuracy, and low-latency.
Do you have any examples (photographs, audio samples) of the device you made? I am curious! Achim
--- En date de : Dim 6.6.10, Pierre Massat pimassat@gmail.com a écrit :
De: Pierre Massat pimassat@gmail.com
Objet: Re: [PD] Looking for a pedal controller
À: "Achim Bloch" achim.bloch@yahoo.fr Date: Dimanche 6 juin 2010, 20h40
Hi Achim,
I've built one myself, based on a usb gamepad. I can give you some tips. But you'll have to be more precise about what you really need (expression pedal or just switches?)
Pierre
2010/6/6 Achim Bloch achim.bloch@yahoo.fr
Hi listees I'm looking for a pedal controller that is accurate enough to send OSC messages to pd, in order to control some effect patches for my guitar. Can anyone help me in finding a good one, maybe providing a perqsonal experience feedback?
Thanks in advance, Achim
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