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- max. size and position of pins according to Fig. 3 (Mitteldruck nach DIN 32976:2007-08)
- max. volume 1500 cm³
- portable
- min. actualization frequency 0.5 Hz
- if you were to buy the components, the cost should be below 100€
- Safe operation (e.g. no toxic chemicals, harmful mechanical parts)
- the materials should be sustainable
- the device should be mass-producable
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. The control unit should operate the actuators accordingly.
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