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A Braille cell (6 pins) is to be designed. The Braille cell should be able to display dynamically all characters shown in the Braille board in Fig. 4. There are no rules for the actuators used, but it has to be limited to a package volume of 1500 cm³. The cell dimensions from Fig. 3 should be realizable, i.e. the distance between the individual pins.
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- max. size and position of pins according to Fig. 3 (Mitteldruck nach DIN 32976:2007-08)
- max. volume 1500 cm³
- min. actualization frequency 1Hz (maybe 0.5 Hz)
The system should run with a 3.3V power source (two battery cells) and operate as energy-efficient as possible. If possible, the Braille-cell should allow stacking of similar cells in reading direction. The signal-input will be a byte representing the 6 pins (optional 8 pins). The control unit should operate the actuators accordingly.
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