Arduino Bluetooth 2WD Car, With Lights and Horn

Another Arduino car, 2WD, equipped with front lights, back lights, and horn.

Supplies

1. Arduino uno R3. with screw shield (optional)
2. HC-05 bluetooth module
3. 2 "yellow" DC 3-12 V motors, wired
4. 2 wheels
5. Active buzzer
6. 2 18650 batteries, with box
7. 2 white 10 mm led wired
8. 2 red 10 mm led wired
9. L298N motor controller
10. Jack for Arduino power supply
11. On-off switch
12. Multidirectional swivel wheel
13. PLA 3d elements: body of the car, and elements to fix wheels (attached .stl files, to be printed in your 3d printer)
14. Several M3 screws, nuts and "Grower" washers
15. Screws assorted
16. Dupont cables

Step 1: Print 3D

In your 3d printer, print PLA .stl files attached: body, wheels supports

If your swivel wheel is different, you need to fix to the body with other parts

Step 2: Assembly Elements

1. Assembly wheels to motor, and assembly set to the body (with M3 screws)
2. Assembly Arduino (and install optional screw shield) and L298N to the body
3. Assembly batteries holder.
4. Connect positive of batteries holder to the switch, and then to Arduino jack and L298N
5. Connect negative (ground) of batteries holder to Arduino and L298N
6. Screw buzzer to the body
7. Assembly swivel wheel to the body (may use attached 3d design elements, or use another system if wheel is different to the one in the image)

Step 3: Wiring

Give 5V and ground, from Arduino to buzzer and HC-05 module.

Wire elements as shown in the image above.

Wire Tx from HC-05 to Rx Arduino (D0)

Step 4: Arduino Program

Disconnect Rx (digital input 0) in Arduino, and load program from IDE Arduino. Then connect Rx,

Step 5: Android Program

Load in your Android phone the attached .apk program.

Set "On change/touch" in options, inside the apk.

Switch on the car, start the .apk, connect to the HC-05 bluetooth, and ENJOY!

(if motor turns in the opposite direction, change wires of this motor),