Arduino - Solid Edge 

Hedi - Tangible Stories, Letters and Music

Hedi, gets its name from the spanish words: “Herramienta para la Estimulación y Desarrollo Integral” which describe its main purpose, to stimulate and support integral development through play.

Hedi first generation was co-designed at Fundación Multis in Medellin, Colombia with children with low vision, blindness and no visual impairments.

We carried out 3 different hands-on session groups with the kids,  each session was designed to support every step of the design process:

1. Skill assessment session

2. Play and social interaction session 

3. Concept building session.

Together,  we identified a list of needs and wants that included their main challenges in the motor, sensory, educational and social spheres. 

We identified the development of graphic literacy to be a priority as it enables the understanding of spatial concepts that can be valuable in STEM education. We then posed the question, how can we increase graphic literacy in children with visual impairments through play?

The outcome was an Arduino-based multi-sensory feedback physical interface that through different game modes (storytelling, letter identification, and musical instruments) and the use of auditory cues, visual rewards and tactile stimulation, enables  children to interact with physical objects and learn more about graphical concepts through exploration and play.

All pieces are labeled in braille.

HEDi Team:

  • Sebastian Uribe
  • Stephanie Valencia

Continued work...

HEDi 2.0, built during my internship at Open Style Lab. HEDi is easier to program now, and has a more accesible interface. This picture was taken on my first day at the Yale Child Study Center

HEDi 2.0 (travel version), built during my internship at Open Style Lab. Picture taken on my first day at the Yale Child Study Center

See through play - about toys and tools

After designing HEDi (first toy/tool box for children with visual impairments) I built this rough prototype to explore other ways to augment the current interface and make it more accessible for parents and teachers to program, build and customize.

Communication, objects and learning through play

Quick demo on an initial prototype for a tangible AAC device using RFID tags ... more updates on their way...


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