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Garbage Collection (GC) is a mechanism that allows for the automatic reclamation of unused memory blocks. Programmers allocate memory dynamically, but when a block is no longer required, they do not have to explicitly return it to the system with a free() call. 

Keypads are a great way to let users interact with your project. You can use them to navigate menus, enter passwords, and control games and robots. In this tutorial, we will show you how to setup a keypad on the Arduino. First we will explain how the Arduino detects key pre...

The HCSR04 ultrasonic sensor can sense the distance between itself and the object in front of it. It uses the formula d=(v*t)/2 to calculate the distance. We can display the output on an LED matrix, rather than viewing it on the serial monitor. Thi...

When combined together in a symmetric manner, multiple LEDs can be used to display messages or patterns which look very aesthetic. Commonly, LEDs are arranged in the pattern of a square matrix, as it is easy to program and convenient to use. This tutorial utilizes an 8x8 ma...

In this tutorial, we will learn how to make a mechanical claw for your robotic arm. We are using the MG99R metal servo, to control the claw, which is perfect for handling rigorous tasks. Weighing only 60 grams and having the maximum angular s...

Components Required: Raspberry Pi 3 B+ Read more

Components Required: Raspberry Pi 3 B+ Read more

This is a tutorial to help you understand ultrasonic and buzzer and go deeper into learning Arduino.