What it shows
A phone app sends commands over Bluetooth to an HC-05 module. The Arduino reads them and drives the motors forwards, backwards, left and right through a motor driver.
This idea has a short entry only. For the science behind it, read the sentence above with your textbook and ask your teacher to explain the law or idea it shows, so you can describe it in your own words.
Materials
- An Arduino Uno
- An HC-05 Bluetooth module
- An L298N motor driver
- A chassis, motors and wheels
- A battery pack and a phone app
Safety
For this project: Use a proper battery holder, never short-circuit cells, and keep fingers clear of the wheels.
Never use mains electricity: power models with cells, batteries or a low-voltage adapter. Sharp and hot tools, flames and lab chemicals need an adult or your teacher beside you. Keep magnets, button cells and small parts away from young children, and wash your hands after making.
How to go about it
Numbered steps have not been written for this idea yet. Plan it with your teacher: sketch the design with measurements, build one part at a time, test each part, and write every observation with the date. The free ebooks below have step-by-step projects of the same kind.
Free ebooks for this project
Robotics
Build a Bluetooth-Controlled Car
Drive a robot car from a phone with an HC-05 module and Arduino
Robotics
Motors, Gears and Motor Drivers
Make things move: DC motors, servos, steppers and how to drive them
Find out more about electronics and robotics
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