Arduino Bluetooth Enabled Rover

This rover uses the HC-05 Bluetooth module to allow it to be controlled by a phone using the "Bluetooth RC controller" app on the Google Play Store

Materials : Runt Rover exterior, 4 wheels and 4 servo motors, HC-05 Bluetooth module, Arduino Uno, doubled sided tape, Arduino Cable, L298N Motor Driver, jumper wires male to female and male to male, and 18650 batteries plus its battery holder.

Description: With the accessibility of four wheels and the Bluetooth module, this rover can go forwards, backwards, to the left, and to the right. Also, the L289N motor driver allows the rover to change speed, depending on what's written in the code.

Here's an example of it changing speeds:

Let's now get into each component that makes this rover move.

First, let's go over the L289N driver module. It looks something like this:

This piece is essential in making the rover's motors go. The jumper wires are connected to the servo motors to the module and more jumper wires are connected to the Arduino to the module. The picture right below shows all the jumper wires connected.

When looking right at this picture, the top two blue ports and the bottom blue ports are connected to the jumper wires of the servo motors. This connection transmits what the Arduino says, (in this case move forward or backwards) to the motors. When everything goes right, you have motion. The three blue ports on the right of the picture connect to the Arduino and the power supply to get power and information. The bottom port to the right connects to the voltage of the batter supply. This is what the red wire is doing. The middle port is connected to two wires. One wire, the black one, connects to the ground (GND) of the battery supply and the blue one connects to the ground pin of the Arduino. The last blue port connects to the 5v pin of the Arduino. All this connection of the right blue ports gives you power and it is shown by a red light of the L298N being on and a green light of the Arduino being on.