TechKnowLab

  L293D is a dual H-bridge motor driver integrated circuit that allows you to control the direction and speed of two DC motors simultaneously. In this tutorial, we will go over how to use the L293D motor driver with Arduino to control the movement of DC motors. Whether you are a beginner or an experienced engineer, you will find this guide helpful. Introduction to L293D Motor Driver LThe L293D is a dual H-bridge motor driver integrated circuit that allows you to control the direction and speed of two DC motors simultaneously. This versatile IC is a popular choice for controlling motors in a wide range of applications, from small robots to automation systems. The L293D is a 16-pin integrated circuit that is designed to drive DC motors. It works by applying a voltage to the inputs, which then outputs a controlled current to the motors. This current is what drives the motors and changes their direction and speed. The L 293D is capable of driving motors up to 600mA, making ...

 Discover what the different Arduino error codes mean and how to fix them. Get back to creating amazing projects with confidence. Introduction If you're working with an Arduino board, you may have encountered some error codes that can be confusing at first. These codes are meant to help you identify what went wrong with your code or circuit. In this article, we will go over the most common error codes that you may come across and what they mean. Common Error Codes Error: 'name' was not declared in this scope This error message usually occurs when you have not declared a variable or function that you are using in your code. To fix this error, make sure to declare all your variables and functions before you use them. Error: expected ';' before '}' token This error message usually means that you forgot to add a semicolon at the end of a line of code. To fix this error, add a semicolon at the end of the line where the error occurred. ...

  NodeMCU IP Address: The NodeMCU is a popular development board for IoT projects. It’s small, affordable, and comes with built-in Wi-Fi connectivity, making it the perfect choice for creating connected devices. But before you can start building your NodeMCU projects, you need to know the IP address of your device. This IP address is essential for communicating with the NodeMCU from another device, such as a computer or smartphone. In this article, we’ll show you how to find the NodeMCU IP address, so you can get started with your next IoT project. Method 1: To Know the NodeMCU IP Address One of the easiest ways to find the NodeMCU IP address is by using the serial monitor in the Arduino IDE. First, connect your NodeMCU board to your computer using a micro-USB cable. Then, upload the following code to the NodeMCU: #include <ESP8266WiFi.h> void setup() { Serial.begin(115200); Serial.println(); Serial.print("Connecting to "); Serial.println(...

 If you're looking to get started with Arduino projects, controlling an LED using an Arduino board and a Python GUI is a great place to start. This project will not only help you understand the basic concept of controlling a device using an Arduino board, but it will also introduce you to the world of Python GUI programming. In this blog, we'll explore how to control an LED using an Arduino board and a Python GUI. Arduino Projects and Python Arduino is an open-source electronics platform that makes it easy for makers, hobbyists, and students to build interactive electronic projects. One of the simplest projects you can do with an Arduino board is controlling an LED. An LED is a small light-emitting diode that can be turned on and off using electrical signals. With an Arduino board, you can control the brightness and color of an LED using a few simple lines of code. Python is a high-level programming language that's widely used in scientific computing, data analy...

 Automation has become an increasingly prevalent part of our daily lives, from ordering food online to controlling the temperature of our homes with a smart thermostat. As technology continues to advance, the possibilities for automation are becoming more and more widespread. In this blog article, we will take a deep dive into the world of automation, exploring what it is, its benefits, its impact on employment, and its potential to shape the future of work. Whether you're a tech-savvy individual or a business owner, this article provides a comprehensive overview of the impact of automation and its potential to drive efficiency and productivity. So, buckle up and join us on this exciting journey into the world of automation. Definition and overview of automation Automation refers to the use of technology to perform tasks automatically, without the need for human intervention. Automation can be achieved through the use of software, robots, or other forms of technology, a...

Creating physical objects from digital models is now simpler than ever thanks to the popularity of 3D printing and the development of more cheap printers. Thingiverse is one of the most well-known websites for finding 3D printing models. Users can submit, distribute, and download 3D printing files for free on the website Thingiverse. Finding the greatest models might be difficult with so many options available.  In this blog article, we'll look at some of the top 3D models on Thingiverse.  Best 3D Models on Thingiverses One of the biggest and most well-known websites for 3D printing files, Thingiverse offers a huge selection of models. Here are a few illustrations of popular 3D model categories on Thingiverse:  Mechanical parts and gears - Thingiverse has a large selection of mechanical parts, gears, and other mechanical components that can be used to create complex machines and robots. Puzzle and Games - There are a lot of puzzle and game related 3D models on Thingiver...

If you are searching for 3D CAD models or Free STL Files for 3D Printing, Then in this article I am going to share such websites or sources where you can find and download STL files free of cost.    Free CAD Models and STL Files for 3D Printing in 2023 Creating tangible products from digital models is now simpler than ever thanks to the popularity of 3D printing and the development of more cheap printers. The STL (STereoLithography) file format is one of the most widely used file types for 3D printing. A 3D printer can use STL files that contain 3D model data and utilize them to produce Gcode and then actual items.  You might be wondering where to find free STL files if you're new to 3D printing or simply looking for some new projects to print. Thanks to the abundance of websites that provide free STL files for 3D printing, you may download and print a huge selection of models for nothing. We'll look at some of the top websites for free STL files for 3D printing in this b...