On Wed, 2008-01-23 at 13:27 -0500, Bernardo Innocenti wrote: > Arjun Sarwal wrote: > > > How can I obtain the value of the pressure applied at any point on the > > touchpad ? > > The PenTablet does not send pressure information. > The GlideSensor does, and I think it's 4 bits.
This is, I think, a problem of terminology. The GlideSensor measures capacitance, and provides 4 bits of output. Capacitance is determined primarily by how much surface area of your finger is in contact with the sensor. It only measures pressure in the sense that pressing harder with your finger causes more of your fingertip to be in contact with the sensor. I would say: The PenTablet provides 1 bit of pressure information The GlideSensor provides 4 bits of capacitance information. You cannot use the GlideSensor as a scale. _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
