Introduction - If you have any usage issues, please Google them yourself
Group for the blind is need to care about the disadvantaged groups of society, out of inconvenience for all the blind patients is a bigger problem, design a guide system, therefore, is a good solution.This topic is a phonetic chip microcontroller, wireless transmission technology, to realize voice navigation system design.This distance information system requirements with the ultrasonic detector, and the wireless transceiver chip transmission, finally presented by voice chip to broadcast to remind the blind.