![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/ESP32-Remote-Controlled-Wi-Fi-Car-Robot.jpg?resize=1200%2C675&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nPrerequisites<\/h2>\n\n\n\n
Before proceeding, make sure to check the following prerequisites.<\/p>\n\n\n\n
1. Arduino IDE<\/h3>\n\n\n\n
The ESP32 will be programmed using Arduino IDE. So, make sure you have the ESP32 boards installed. You can follow the next tutorial as a reference:<\/p>\n\n\n\n
- \n
- Installing ESP32 Board in Arduino IDE 2 (Windows, Mac OS X, Linux)<\/a><\/li>\n<\/ul>\n\n\n\n
2. Parts required:<\/h3>\n\n\n\n
Here\u2019s a list of the parts required to build the ESP32 Wi-Fi remote-controlled car robot:<\/p>\n\n\n\n
- \n
- ESP32 DOIT DEVKIT V1 Board<\/a><\/li>\n\n\n\n
- Smart Robot Chassis Kit<\/a> (or your own DIY robot chassis + 2x DC motors<\/a>)<\/li>\n\n\n\n
- L298N motor driver<\/a><\/li>\n\n\n\n
- 1x Power bank \u2013 portable charger<\/a><\/li>\n\n\n\n
- 4x 1.5 AA batteries<\/a><\/li>\n\n\n\n
- 2x 100nF ceramic capacitors<\/a><\/li>\n\n\n\n
- 1x SPDT Slide Switch<\/a><\/li>\n\n\n\n
- Jumper wires<\/a><\/li>\n\n\n\n
- Breadboard<\/a> or stripboard<\/a><\/li>\n\n\n\n
- Velcro tape<\/a><\/li>\n<\/ul>\n\n\n
You can use the preceding links or go directly to MakerAdvisor.com\/tools<\/a> to find all the parts for your projects at the best price!<\/p>
![](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2017\/10\/header-200.png?w=1200&quality=100&strip=all&ssl=1\")
<\/a><\/p>\n\n\n\n3. DC Motors and the LN298 Motor Driver<\/h3>\n\n\n\n
To build the robot, we’ll use two DC motors controlled via a LN298 motor driver. Get familiar with controlling the speed and direction of a DC motor with the ESP32:<\/p>\n\n\n\n
- \n
- ESP32 with DC Motor and L298N Motor Driver \u2013 Control Speed and Direction<\/a><\/li>\n<\/ul>\n\n\n\n
4. The Robot Chassis Kit<\/h3>\n\n\n\n
We’ll use the Smart Robot Chassis Kit<\/a>. For instructions on how to assemble it, check the following tutorial:<\/p>\n\n\n\n
- \n
- Assembling the Robot Car Chassis Kit<\/a><\/li>\n<\/ul>\n\n\n\n
Project Overview<\/h2>\n\n\n\n
Before starting the project, we\u2019ll highlight the most important features and components to create the project.<\/p>\n\n\n\n
Wi-Fi<\/h3>\n\n\n\n
The robot will be controlled via Wi-Fi using your ESP32. We\u2019ll create a web-based interface to control the robot that can be accessed on any device inside your local network.<\/p>\n\n\n\n
Robot Controls<\/h3>\n\n\n\n
The web server has five control options: forward, reverse, right, left, and stop. There\u2019s also a slider to control the speed.<\/p>\n\n\n
\n![\"\"](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/ESP32-web-server-control-robot.jpg?resize=750%2C422&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nSmart Robot Chassis Kit<\/h3>\n\n\n\n
We\u2019re going to use the robot chassis kit shown in the figure below. That is the Smart Robot Chassis Kit<\/a>. You can find it in most online stores. The kit costs around $10, and it\u2019s easy to assemble. You can use any other chassis kit as long as it comes with two DC motors.<\/p>\n\n\n
\n![\"\"](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/ESP32-robot-chassis-kit.jpg?resize=550%2C392&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nL298N Motor Driver <\/h3>\n\n\n\n
There are many ways to control DC motors. We\u2019ll use the L298N motor driver that provides an easy way to control the speed and direction of 2 DC motors.<\/p>\n\n\n
\n![\"298N](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2018\/05\/298n-motor-driver.jpg?resize=750%2C500&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nPower<\/h3>\n\n\n\n
The motors draw a lot of current, so you need to use an external power supply. This means you need two different power sources. One will power the DC motors, and the other will power the ESP32. We\u2019ll power the ESP32 using a small portable charger (like the ones used to charge your smartphone).<\/p>\n\n\n
\n![\"portable](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/portable-charger.jpg?resize=750%2C421&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nThe motors will be powered using 4 AA 1.5V batteries. You might consider using rechargeable batteries or any other suitable power supply.<\/p>\n\n\n
\n![\"\"](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/ESP32-robot-power-DC-motor-using-batteries.jpg?resize=750%2C422&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nControl DC motors with the L298N<\/h2>\n\n\n\n
To get familiar with the L298N motor driver, we recommend reading the following tutorial:<\/p>\n\n\n\n
- \n
- ESP32 with DC Motor and L298N Motor Driver \u2013 Control Speed and Direction<\/a><\/li>\n<\/ul>\n\n\n\n
Let’s take a quick look at how to use the L298N motor driver to control the robot’s speed and direction.<\/p>\n\n\n
\n![\"\"](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2018\/05\/L298N-label.jpg?resize=750%2C500&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nThe Enable Pins<\/h3>\n\n\n\n
The enable pins are like an ON and OFF switch for your motors. For example:<\/p>\n\n\n\n
If you send a HIGH signal to enable 1 pin, motor A is ready to be controlled and at the maximum speed. If you send a LOW signal to the enable 1 pin, motor A turns off.<\/p>\n\n\n\n
If you send a PWM signal, you can control the speed of the motor. The motor speed is proportional to the duty cycle. However, note that for small duty cycles, the motors might not spin, and make a continuous buzz sound.<\/p>\n\n\n\n
- ESP32 with DC Motor and L298N Motor Driver \u2013 Control Speed and Direction<\/a><\/li>\n<\/ul>\n\n\n\n
- Assembling the Robot Car Chassis Kit<\/a><\/li>\n<\/ul>\n\n\n\n
- Smart Robot Chassis Kit<\/a> (or your own DIY robot chassis + 2x DC motors<\/a>)<\/li>\n\n\n\n
- ESP32 DOIT DEVKIT V1 Board<\/a><\/li>\n\n\n\n
![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/ESP32-two-dc-motors-robot-circuit.png?resize=755%2C706&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/ESP32-car-robot-on-a-stripboard.jpg?resize=750%2C422&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/ESP32-car-robot-circuit-on-chassis-kit.jpg?resize=750%2C422&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"\"](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/ESP32-car-robot-assembled.jpg?resize=750%2C422&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Getting](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/esp32-robot-connected.png?resize=666%2C377&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"powering](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/powering-ESP32-robot-portable-charger.jpg?resize=750%2C422&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/control-robot-web-server-esp32.jpg?resize=750%2C421&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2024\/09\/ESP32-Car-Robot-Final-Result.jpg?resize=750%2C422&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n