Flexible design and
HaptiComm hardware platform is predominantly 3D printed this allows us to
modify the design for personal preferences. The mounting system which
contains the actuators and supports the user’s hand can be modified for
material, size, shape, actuator layout and number of actuators.
components of HaptiComm (except for the electronics) are washable and
easily replaceable as the system is designed for extended use (exceeding
1 hour). Parts that come into direct contact with the hand (the cover for
the mount and the actuator tips) are also able to be modified in shape
and material allowing for maximum amount of comfort in the user’s
has an almost instantaneous response with each actuator rising over a
15ms span. Individual actuators can deliver a maximum of 14 tap
sensations per second. Each actuator has the capacity to oscillate at
various frequencies up to 3000Hz (approximately) with a refresh rate of
10KHz (theoretical) or higher dependant on the interface speed.
the HaptiComm supports up to 31 actuators in its array with each being
capable of being driven independently or simultaneously. In addition,
they are all able to accept a separate waveform pattern (taken from a wav
file) to allow for different sensations to occur in different locations
at the same time.
design decouples the actuators from the out section of the device
allowing for each actuator to be activated as a distinct part. “Echo” or
vibratory propagation is kept to a minimum.
uses a configuration file system which allows it to be rapidly changed
between the sensations/patterns it attributes to each letter, word or
concept. This also allows for the building and saving of personalised
tactile “dictionaries” to cater to the broad range of individual
software allows us to modify the timing variables, impact pressure and
frequency oscillation of the actuators. Modifications are dependant on a
wav file (waveform file) and are currently generated using Audacity.