[sdiy] Touchpad as CV controller

[Eric Brombaugh]

You might also check out the older-style X/Y resistive touch sensors 
such as are used in less expensive LCD touch sensitive systems. The 
transparent sensors are pretty easy to find on places like DX as repair 
parts for portable games and cellphones:

http://www.dealextreme.com/details.dx/sku.32333

Here's an appnote from Atmel on how to use these with ordinary MCUs:

http://www.atmel.com/dyn/resources/prod_documents/doc8091.pdf

Eric

On 08/17/2010 12:04 PM, Veronica Merryfield wrote:
> Hey
>
> Most of thee devices are based on capacitive sensing. Check out the Cypress touch microcontrollers for info. There are other micro ranges that now include touch sensing hardware but I have found the data available from Cypress to pretty comprehensive. They do 2D and 3D sensing systems.
>
> Veronica
>
> On 2010-08-17, at 9:35 AM, Luís Marka wrote:
>
>> Hi folks,
>>
>> Inspired by a demo video of the Korg Electribe EMX-1, I was thinking about the ribbon controller thing. I have a number of used notebook touchpads lying around and was thinking about building a CV controller using one of these. Idea is to give trig/gate outputs when the touchpad is, well, touched, and X and Y information would translate as CV Outs, with additional potentiometers for Offset and Scale.
>> Googling around was of not much help, so I was wondering if anyone tried such a thing, or has any hints on what could be done to have this controller built and working.
>>
>> Best, etc, Luis Marka
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