Digital White Cane
The use of low-cost microcomputers can contribute to the implementation of innovative ideas with social denominator. Such an idea is the integration of a microprocessor Arduino or Raspberry – pi in a walking stick-cane for the visually impaired. This particular micro processor will bring a camera-color sensor to the bottom of the cane, so that it can distinguish color contrasts in the ground that walks or moves this person with partial or total blindness.
The recognition of color contrasts in the ground is in itself a useful function, but it is known that corridors for visually impaired on pavements are of a different color than the rest of the pavement. In addition to recognizing the color difference there will be a sound signal or vibration in the cane. Thus, the visually impaired person will be able to be warned in time for hazards to move.
On a second level we can incorporate a distance sensor so that with the accompanied sound signal bounded a possible obstacle. The possibility of the audible signal being disturbed or not heard, is solved by using a headset for the person with reduced or incomplete vision.