⏰ Invisible Night Clock

by Rob Barnes

Version 2 (March 21, 2017)

Download (56 downloads)

Check the time at night without opening your eyes by putting your ✋ on your phone. Your phone will vibrate to communicate the time. Only works when charging and screen is off.

Format:
Hours | 1 second pause | minutes/10

Long pulse = 5
Short pulse = 1