RC BOAT (HC-05 Bluetooth-mobile Controlled)

How to make an RC boat (cheap) that can be controlled by mobile through BlueTooth.

Material Required:

• Foam board 5mm
• Arduino Uno
• Micro coreless motor (3.7v) x2
• DC motor (3-9v) x1
• Servo motor (sg90)
• 45mm propeller x2
• FT009-12 x1
• QL293d Motor driver
• Wires
• Battery
• Bluetooth module HC-05

I am designing a basic idea and dimensioning the boat according to need.

Making CAD verify all the mechanisms and dimensions are coming together.

I am using Arduino Uno and a motor shield (Ql293d) which fulfills all needs.

Wiring:

• Coreless motor 1 ==> M1
• Coreless motor 2 ==> M2
• DC motor ==> M3
• HC-05 :
• TX ==> D0
• RX ==> D1
• GND ==> GND
• VCC ==> 5V

• Servo ==> SER1
• Battery 1 ==> external power supply QL293d
• Battery 2 ==> external power supply arduino uno

1. Uploading code in Arduino Uno.
2. Installing this app on mobile: https://play.google.com/store/apps/details?id=com.keuwl.arduinobluetooth
3. I am setting all the keys according to the code in the mobile app.
4. I am testing electronics and controlling motors using mobile via BlueTooth.

After testing the electronics I started making parts and changing a few dimensions to fit electronics inside the boat.

I used a cutter to make parts from foam sheets and assembled them using super-glue and waterproofing inside the boat at the bottom.

After assembling all parts I started installing electronics and motors and glued them inside the boat.

The final test of all mechanisms using mobile.

Completing obstacles course.

Controlling the boat was hard due to the low latency caused by the BlueTooth module.

No water got inside the boat and all mechanisms worked according to their purpose.