Hello, in this project I will show you how to transform a simple RC to Bluetooth controlled boat through your Android smartphone!

In my rc boat I chose to build my own Arduino-based circuit with atmega 328p. But, in this tutorial, you can find an Arduino uno breadboard schematic so you can build it very easy ;)

Before starting, make sure that you have:

Arduino uno board
L293D motor driver
HC-06 Bluetooth module
RC Boat that can fit all the above !

Optional you will need 1x1MOhm & 1x100KOhm resistror to add a battery level control function. For power, you can use the existing batteries (4x 1.5V AA), or replace them with a LiOn rechargeable battery pack.

Official site: http://www.ardumotive.com/bluetooth-rc-boat-new.html

Step 1: Navigation System

See the above images to understand how to control motors to navigate your rc boat, imagine that you are looking it from behind.

On simple RC boat toys you will find a "two propeller navigation system".

That means you don't need a rudder for changing directions.

You can find more details here

Step 2: Breadboard Schematic

If you want more power you can use L298 module board.

L293D motor driver will give max 0.5A per channel and it will be come very hot after while. L298 module board has a heat sink and can give 1A per channel, but is bigger than L293D.

(read more about L298 & L293D)

Step 3: Code

Download and open file with Arduino ide. Read every line of code (+comments) to understand how it's working and then upload it to your Arduino uno board!

(for programming arduino uno board you must disconnect first the RX & TX pins of Bluetooth module)