AVR-Chat

I don't think a reliable solution (e.g., cannot alter existing
handrail and/or deal with a gloved hand) is feasible.
--- In AVR-Chat@yahoogroups.com, xolang1 <xolang1@...> wrote:
>
> Hi again,
> 
> There is this 3 meter long "stainless" hollow metal rod.
> This is the kind of material used in hand railings and
> barriers. A person might grasp anywhere along the length
> of this rod.
> 
> The requirement is for an AVR to be able to detect if a human hand
> is there or not(a 1 or 0 will do).
> 
> Was thinking of capacitance sensors, however, I havnt seen one
> that uses a rod instead of a metal plate.
> 
> Anyone here encountered one? or is there a better way to do this
> kind of sensing?
> 
> thanks
> 
> chris
>