hi
Iam building a toy ship that uses 5 ultrasonic sensors to detect any obstacle and the arduino uno use the relay to switch between two motors and rotate the ship and it uses GPS & GPRS in directing and tracking the ship, if i wanted to control the ship through android phone so i can get the GPS coordinates on it and send it's destination coordinates to it, and to control the ship system to it
1- which bluetooth module do i have to use and if i changed the chip to arduino mega will i going to need to chane the bluetooth module?
2- what do i have to learn to make android app that i can connect to the bluetooth module?
thanks