I want to do something like a blind person can know his location. So I want to use Bluetooth & gps to send data on phone. A app that read that data and produce a location and say that voice. Can you guys help me how to do that.
TIA
Hello azgor1
Have you asked on the WWW for a ready-made solution that is already offered by the mobile phone manufacturers?
Have a nice day and enjoy programming in C++ and learning.
MIND THE GAP
Try using some HC-SR04 ultrasonic sensor for locating distance, then a buzzer for communicate whenever the sensor is to close to something or, if you prefer, a vibrating motor.
for the HC-SR04 if use the SR04 library of the Elegoo kit but there are tons of library that do the same thing.
You may not need a library at all, since it's not difficult to use, but i recommend using one.
What? The OP has already mentioned GPS so they clearly want to know location in a global sense not just that the user is about to walk into a wall.
I think the folllowing links will give you some ideas:
https://create.arduino.cc/projecthub/mero/blind-stick-navigator-b119f5
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