![]() We can send out a 10 mSec pulse on trig and then receive that pulse on the echo pin. Integrate HC-SR04 with Arduinoįirst, we’ll create a method to get the distance from the ultrasonic sensor and a detected object. Not sure what all this means? Refer to our Arduino Programming guide before continuing on. I’ve also already declared my pins & global variables required for the code. You’ll need to have your autonomous move commands configured prior to this step. Let’s keep things simple by first implementing the HC-SR04 servo detection code. Then, we can make it more sophisticated by integrating a 9g Servo for 180-degree scanning capabilities. We can first develop code using just the HC-SR04 ultrasonic sensor. If the object is on the right, move left if the object is on the left, move right.If so, figure out which side of the robot the object is on.Scan to see if anything is in front of us.Here’s an overview of the programming logic for our tank robot. Refer to our how to use an L298N motor controller article for tips on wiring and programming the motors. Have an understanding of how to create and upload an Arduino sketch.Written some code to control motors autonomously and.This tutorial assumes that you have already: This is a good option for those of you who already built an Arduino robot car and now want to build a tank. ![]() You’ll need to get some hardware (Arduino, Motor Controller, HC-SR04, etc.) to build the project. Here’s a lower cost tank chassis on AliExpress. ![]() Next, copy and paste the following code into a new Sketch file inside the Arduino IDE. For this step, youll need to have the Arduino IDE installed. You can also pick up a tank chassis, Arduino, Arduino Sensor Shield, and L298N motor controller to complete this project. Now its time to write some code for the Arduino The following sketch will spin the servo forward for 1 second, pause for 1 second, spin in reverse for 1 second, and pause for 1 second on repeat. We’ll make it a bit more complex by utilizing a servo motor to scan around the tank before responding.įor this tutorial, I used the Kookye Robot Tank kit from Amazon. In this project, we will use the HC-SR04 sensor and write software for our Robot Tank to avoid obstacles. With a simple HC-SR04 sensor, you can detect objects with using ultrasonic waves (sound). The epitome of robotics is obstacle detection and avoidance.
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