Hey students! Welcome to another episode of the MQ gas sensor series. Today, we are interested to learn about the high-performance sensor that is used to detect the presence of benzene gas. This is the MQ138 gas sensor and it instantly detects the target gas because it has tin dioxide as the sensing element. Usually, it can detect multiple gases and is considered as the Volatile organic compounds (VOC) sensor but the most significant target gas of this sensor is benzene therefore, we’ll pay attention towards the discussion of the benzene detection through this sensor. Many features of this sensor resemble other members of the MQ gas sensor series and we’ll read its basic features and specifications in detail.
In this article, we’ll initiate the discussion with the basic introduction of t ...
Sometimes you may be asked to submit a written piece of note in the form of handwriting. We all know, writing by hand is quite a labor-intensive and time-consuming task. You first have some blank pieces of white paper, and then find the required information from an online source. After this, the writing process will start.
So, what’s the solution to this? Fortunately, there is a quick and effective solution available. If you are asked to convert some pieces of text available online into handwritten notes, then instead of manually noting it down, you can consider utilizing text-to-handwriting tools.
These tools allow users to convert normal text into handwritten style in real-time.
Remember, utilizing online tools is the only solution if you don’t want to make use of pe ...
Hello friends, I hope you all are fine and having fun with your lives. Today, I am going to share a complete project named as GSM Based Home Security System. I have designed its complete working simulation in Proteus and have used different libraries which you can also download from our blog. In the previous post, I have posted Home Automation Project using XBee & Arduino and today we are gonna work on Home Security System.
We have designed this simulation after a lot of efforts that's why we have placed a very small amount of $50 on it so that engineering students can download it and get knowledge from it. Moreover, as its a complex project so when you buy it then there's a chance that you can't run it by yourself so we also offer a free serv ...
Hello friends, I hope you all are doing great. Today, I am going to share the 6th lecture in the Raspberry Pi 4 Programming series. We're glad you could join us for another lesson in our comprehensive Raspberry Pi programming guide. In today's guide, I'll show you how to interface a 16x2 LCD screen with Raspberry Pi 4.
So, let's get started:Interface LCD 16x2 with Raspberry Pi 4Today, we are going to interface a 16x2 LCD screen with Raspberry Pi 4. At first, we will print the "Hello World" text on the LCD, and in the last section, we will implement the scrolling and blinking of text on the LCD.Here's the video tutorial on LCD interfacing with Raspberry Pi 4:Components RequiredWe will need the following components for today's project:Raspberry Pi 4.M ...
Hi everyone! Thank you for viewing this article, I welcome you on board. In this post I’ll walk you through the detailed Introduction to BC546. BC546 is a low power NPN transistor mainly used for general purpose amplification and switching applications.
In this read you’ll study all nitty-gritty of BC546 transistor i.e. from pinout, pin configuration, and working principle to power ratings, key parameters, physical dimensions and applications. Keep reading.
Introduction to BC546
BC546 is a bipolar junction NPN transistor that finds applications in switching, amplification, impedance, H-bridge and current mirror circuits.
This transistor falls in silicon epitaxial planar transistor category which is generally divided into three groups A, B &am ...
Hi readers! Hope you are having a great day and want to learn something new. Today, the topic of discourse is the pros and cons of outsourcing web development services.
Why construct the entire house when one can call experts to lay bricks cheaper and quicker? That's the philosophy behind the world trend of outsourcing web development services. In today's digital economy, many companies scramble to build a strong digital presence. Not every company can hire full-time developers or maintain high-quality websites actively. By outsourcing, companies can access global talent, save on development costs, and accelerate the timetable for getting to market with their projects.
It's not an easy task to outsource web development service but it allows companies to hire outside developers and get th ...
Hi Friends! Happy to see you here. I welcome you on board. In this post, I’ll walk you through the Introduction to BC639. BC639 is a high current gain bipolar junction transistor that falls under the NPN transistor family. It constitutes a high collector current and low collector-emitter saturation voltage and is widely used for amplification and switching purposes. It is used to drive load under 500mA. Collector Dissipation is 0.625W while DC Current Gain (hfe) ranges from - 40 to 160 with transition frequency 200MHz. In this post, I’m going to discuss all nitty-gritty of the BC639 transistor covering pinout, working, power ratings, alternatives, applications, and physical dimensions.
Continue reading.
Introduction to BC639
BC639 is an NPN bi ...
Hello friends, I hope you all are doing great. In today's tutorial, we are gonna have a look at How to use For Loop in C#. It's our 11th tutorial in C# series. Till now, we have seen two loops in C# which are IF Loop and while Loop and today we are gonna have a look at for Loop.
For Loop is most commonly used loop in any programming language and if you have worked on any other language then you must be aware of its syntax. It is used to create repeated loop with specified number. Let's have a look at it in detail:
How to use for Loop in C#
For loop in C# takes an integer variable as a Controlling agent, initialized at value V1 and ends at value V2, and the travel from value V1 to V2 depends on the Condition specified in () brackets.
In bot ...
Accurate site measurements are the starting point for successful construction, land development, infrastructure planning, and property boundary work. Before engineers design a roadway, developers plan a subdivision, or contractors begin grading, surveyors must collect reliable data about the land. That work depends heavily on using the right Land Surveying Equipment.
Modern surveying combines technical knowledge with specialized tools that measure distance, elevation, angles, and geographic position. Some tools are simple and familiar, while others use advanced digital and satellite-based technology. Together, they help surveyors create dependable site data that supports better planning and fewer costly mistakes. Many professionals who provide field surveying services rely on a mix of tra ...
Hello friends, I hope you all are having fun. Today, I am going to share the 9th tutorial of Section-III in our Raspberry Pi 4 Programming Course. In the previous tutorial, we interfaced an air pressure sensor BMP180 with Raspberry Pi 4. In this tutorial, you'll learn how to interface an MQ-2 gas sensor with a Raspberry Pi 4. Many apartments, residences, and workplaces rely heavily on these gas sensors to detect smoke or gas and alert the appropriate personnel in an emergency. In addition to gas and smoke, this sensor is sensitive to various odorous gases.
Project DescriptionToday, we will interface a gas sensor MQ-2 with Raspberry Pi 4 and will display the values on Raspberry Pi Console Window.
Components Required
These are the components use ...
