4 Wheel Robot Made With Arduino Controlled Using Dabble

Another project, another out-of-the-box gifting idea! Presenting to you the Dabble controlled 4-wheel robot - an simple-and-fun to build and easy-to-control robot that can be controlled via Bluetooth using Dabble, a mobile application indigenously developed us. All you need to make your robot is an Arduino Uno board, chassis, wheels, motor shafts, and other accesories and tools. To control it, you need to install Dabble from Google Play and pair it with Bluetooth; and your robot’s ready to go places!

What better way to end the year with the same DIYing spirit that it began with, right? So what are you waiting for! Let’s get started!

Step 1: Things You'll Need

Arduino Uno Board
Breadboard
Chassis
Motor Mounts
DC Motors
Wheel
Motor Driver
Bluetooth Module HC05
DC Terminal Block
Battery
Jumper Cables

Step 2: Making of the Body

Firstly, we will start making the body of the 4 Wheel Robot.

Take the chassis and turn it upside down.

Onto this chassis mount 4 motor mounts using M3 Bolts and nuts.

Fix the DC Motors and fix them on the motor mounts using M2 Nuts and Bolts.

Attach wheels on each shaft of the DC Motor.

Flip the assembly, thus your body is created.

Step 3: Adding the Brain

The microcontroller that we are going to use is Arduino Uno.

We are going to make all the connections on it, but we are also going to use a breadboard to make the connections.

Step 4: Making Connections and Using Motor Driver

Make the connection as shown in the above figure.

We are going to make use of the motor drivers because Arduino Uno does not provide sufficient power to run 4 Motors. Thus, we will be adding the motor driver, we will be able to give the robot needed energy.

The left two motors are connected in parallel. Similarly, the right two motors are too connected in parallel.
The connections are made as follows:

Enable Pins – Digital Pin 10 and 11
VCC – Arduino 5V
m1_dir1, m1_dir2, m2_dir1, m2_dir2 – Digital Pin 4, 5, 6, and 7
VC – External Battery
GND – GND of Arduino and Battery
Make sure we connect all the GND wires together.

Step 5: Connecting Smartphone

We need to add a module that will make the connection between your robot and Dabble App on Smartphone.

We are taking Bluetooth HC05 Module. Connect it as shown in the connection figure.

Step 6: Adding the Battery

We will need to add an extra power source to our robot. Also, to connect Arduino Uno with the battery we are going to use DC Terminal Block or DC Jack.