I couldn't expect that I could be enrolled to Desinging for Constraints class because I was the seventh on waiting list, but I received a notice that I got into the class just two hours before the second week class. For that reason, time constraints for the assignment was severer for me.
However, I've discussed with my friends about a clock for blind person, I could have started directly.
cover, protecting clock hands as well as user's hands
1. dots at top-left corner indicates a direction.
2. each position of time has dot(s). 12 o'clock has four dots; 3, 6 and 9 has 2 dots; the others have a dot.
3. a cubic with a dot is a hour hand, a cubic without a dot is a minute hand.
4. each hand will move clockwise according to the time.
 
1. user can follow the dots to find cubics, and then figure out what time it is.
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