0LAUK0 PRE2018 3 Group 13 Dummy sentence: Difference between revisions
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Revision as of 11:24, 4 April 2019
Description
The dummy sentence is the first physical thing that will be designed. As stated earlier, the dummy sentence was chosen to be made to provide a full sentence in braille, without the product being extremely expensive. The initial plan was to make a prototype in which a full sentence could be displayed on demand. However, the final product will be a static sentence. The reasons for this will be explained in this section.
The final dummy could be used to further improve user research, for example by making the dummy out of different materials to test the preferences of the users. It could also be used to try out different positions of relevant buttons and switches.
First ideas
The initial idea for a dummy sentence was to make a prototype with a predefined sentence, which could be displayed on demand. This way, the idea of a refreshable braille display, in which letters appear and disappear, remains. However, because no electronics are used, the cost of the prototype would be low.
With this in mind, the first version of the 3D model was made, which can be seen in the figure below.
As can be seen, the idea was to be able to screw this plate to a base below it, where the mechanism would be located to move a sentence up and down through the holes in the display. However, since the plan was to 3D print the model, it was realised that this was not realistic, since the 3D printer would have to print very fine screw thread. Therefore, the dummy was remodelled to be more “3D printer friendly”.
