The HC-SR04 Ultrasonic Distance Sensor is a staple in robotics projects. This inexpensive device is capable of measuring the distance between itself and the nearest solid object from 2 to 400 centimeters. Exactly what you need to keep your bots from driving into walls!
In this article we’ll look at this sensor in depth, including ways to make it even more accurate by compensating for temperature and humidity. There’s lots of Arduino code to be has as well, so dig in!
The JSN-SR04T and A02YYUW are a couple of inexpensive waterproof ultrasonic distance sensors. They are easy to use, and have several advantages over the popular HC-SR04 sensor.
In this article I’ll show you how they work and how to use them with an Arduino Uno.
Today I’m going to compare the performance of a tiny Laser-based time-of-flight sensor, the TOF10120, with the classic HC-SR04 ultrasonic range finder.
After we hook the sensors up to an Arduino I’ll put them to the test on my “unique” testbed. The results might surprise you.
In our second look at using the I2C bus we will build our own I2C sensor, one that has four ultrasonic distance sensors.
We’ll also learn about the protocol used by I2C communications
The RCWL-0156 is an inexpensive yet useful proximity sensor that can be used on its own or with a microcontroller like an Arduino Uno.
The device is unique in that it uses microwaves and Doppler Radar to detect moving objects
In this article I will show you how the device works on its own and how we can add an Arduino (or two) to create some useful projects
The Elegoo Smart Robot Car is an Arduino-based design with an impressive list of features
In the final installment of this series, I show you how to use both Collision Avoidance and Line Tracking with the Smart Robot Car.
The Elegoo Smart Robot Car V3 is an Arduino-based robot car with features like Bluetooth remote, IR remote, line following, and collision avoidance.
In the first of a three-part article I will show you how to assemble and test the Robot Car.
Table of Contents1 Introduction2 What is LIDAR?2.1 LIDAR History2.2 LIDAR Robotics Applications3 How LIDAR Works3.1 LIDAR vs Other Technologies3.1.1 LIDAR vs Ultrasonic Sensors3.1.2 LIDAR vs IR Light Sensor3.1.3 LIDAR vs RADAR4 DFRobot LIDAR Sensors4.1 TF Mini LIDAR4.1.1 TF Mini LIDAR
XOD is a method of programming an Arduino using a graphical IDE instead of writing code. In XOD you use a collection of “nodes” connected by “links” to program your Arduino.
In this second installment on our series on XOD I’ll show you some ways of improving your XOD projects by using multiple patches, custom nodes and XOD libraries.
But the real fun is that in this article we’ll also start working on a practical project – a XOD robot! So let’s get started.
Liquid Crystal Displays or LCDs are an excellent way to display characters and data in your Arduino projects. They are inexpensive and very easy to use.
In this article you’ll learn how to add LCD displays to your Arduino project, both hardwired and using the I2C bus connection. You will also learn to use a popular LCD Keypad Shield which as a 2-line LCD along with 6 push buttons.