During the era of Covid-19, social distancing has proven to be an efficient method of reducing the spread of contagious viruses. It is recommended that people avoid close contact as much as possible because of the potential for disease transmission. Many public spaces, including workplaces, banks, bus terminals, train stations, etc., struggle with the issue of keeping a safe distance.
The previous guide covered the steps necessary to connect the PCF8591 ADC/DAC Analog Digital Converter Module to a Raspberry Pi 4. On our Terminal, we saw the results displayed as integers. We dug deeper into the topic, figuring out exactly how the ADC produces its output signals. In this article, however, we will use OpenCV and a Raspberry Pi to create a system that can detect when people are trying to avoi ...
Hello Everyone! Hope you’re well today. Happy to see you around. In this post today, I’ll walk you through the Introduction to FR107.Fr107 is a fast recovery diode mainly used for converting alternating current to direct current. It can support loads under 1A and carries a peak inverse voltage of 1,000 V.Read this post all the way through as I’ll detail the complete Introduction to FR107 covering datasheet, pinout, features, characteristics, and applications. Let’s get started.
Introduction to FR107
Fr107 is a fast recovery diode mainly used in fast-switching applications. It comes with two terminals called an anode and a cathode. The grey-colored band identifies the cathode side while the other side is the anode.
A highly efficient and ...
Hello Friends! Happy to see you around. I welcome you on board. In this post today, I’ll walk you through the Introduction to 1n4749.
The 1n4749 is a Zener diode made of silicon material. It is used for clipping circuits with high power ratings. It is also incorporated in voltage stabilizing circuits and voltage protection circuits. There is a slight difference between the normal diode and the Zener diode. In the normal diode, conduction is carried out in one direction only i.e. in forward biased condition. While in the case of the Zener diode, the conduction is carried out in both conditions i.e. forward biased condition and reverse biased condition. Zener diodes are also applied to keep circuits from overvoltage.
Read this post till the end as I’ll walk you through the complete Int ...
Cryptography is no longer confined to academic theory or niche security tools. It underpins everyday software systems, from secure messaging and cloud services to authentication, payments, and distributed networks. Modern applications rely on cryptographic primitives to establish trust, protect data, and authorize actions without exposing sensitive information.
Understanding how cryptography is applied in real systems requires moving beyond definitions and examining how these mechanisms operate in practice, where design trade-offs, performance constraints, and human behavior all play a role.
From Theory to Implementation
At its core, cryptography provides mathematical guarantees around confidentiality, integrity, and authenticity. In practice, these guarantees are delivered through well ...
Hello readers! I hope you are doing great. Today we are discussing the features and details of the MQ-4 methane gas sensor, which belongs to the popular gas sensor MQ family. We have been working on other gas sensors as well, but MQ-4 is particularly suitable for detecting the presence of methane gas. This sensor is more popular because methane gas and compressed natural gas (CNG) are widely used for cooking and other related purposes. MQ-4 methane gas sensor is an important part of the home safety system. Some other advantages of this sensor are, that it responds instantly and has a potentiometer that adds versatility to its functions.
In this article, we are going to study the MQ-4 methane sensor from scratch. We’ll go through its introduction and will study the basic components of it ...
Hello friends, I hope you all are doing great. In today’s tutorial, we will have a look at Benefits of Animated Videos to Grow Your Business. Animated videos are effective tools for audience engagement on your website, social media, at conferences, and employee meetings. Animated videos have the power to increase conversion by 80%. Websites with animation are more likely to attract potential customers. Your competition is using animation to tell stories, enhance their branding, and set themselves apart, in fact, 96% of marketers use animated videos in their marketing campaigns. So let's get started with Benefits of Animated Videos to Grow Your Business.
Why aren’t you?
Austin Visuals, a leading US-based animation production company, creates cust ...
A lot of engineering students know this feeling. The code uploads without any error, the laptop says everything is fine, and then the actual project does almost nothing. The motor does not spin. The sensor value jumps around. The board resets for no clear reason.
That is usually when the real lesson starts. Good engineering is not only about writing code. It is also important to know what the circuit is doing when the code reaches the board.
Code Can Look Right While the Hardware Fails
Most small engineering projects need code now. Arduino, Raspberry Pi, ESP32, and STM32 boards all depend on it. But the code is only one part of the project. Once it reaches the board, the wiring, power, and parts all have a say too.
A student may spend an hour ...
Hello readers, hope you all are doing great. This is our 3rd tutorial in the ESP32 programming series. In our previous tutorial, we discussed the ESP32 Web server, where we created the ESP32 web server in STA mode.
ESP32 can be operated as an access point (AP) or a Wi-Fi station (STA mode). So, in this tutorial, we will create an ESP32 web server in access point (AP) mode. Here's the video demonstration of ESP32 WebServer in Access Point Mode:
As I mentioned above, in our 2nd tutorial, we already discussed the basics of the ESP32 web server. So, in this tutorial, we will only discuss how to create the ESP32 in access point mode.
For detailed information about the basics of the ESP32 web server and how client-server communication takes place, fol ...
Hi Friends! Welcome you on board. Happy to see you around. In this post today, I’ll walk you through the Introduction to Tip41c.
Tip41c is an NPN transistor that comes in the TO-220 package and is mainly used for amplification and switching purposes. It’s a high switching speed device with improved current gain and a high collector current around 6A that indicates the value of load this device can support. Both collector-base and collector-emitter voltages are 100V (higher than other bipolar transistors) and the emitter-base voltage is 5V which shows the only 5V is required to bias this component.
Just stay with me for a little while as I’m going to detail the pinout, datasheet, applications, power ratings, working principle, and physical dimens ...
Hello friends, today's post is about designing a simple calculator with 8051 Microcontroller. In our previous post, we have seen How to Interface keypad with 8051 Microcontroller in Proteus ISIS. Moreover, we have also worked on Interfacing of LCD with 8051 Microcontroller in Proteus ISIS. If you haven't read these two posts then my suggestion is to read them first before going into the details of this post, as we are going to use both keypad and LCD in order to design the simple calculator with 8051 Microcontroller.
Actually we have already understood the working of both keypad and LCD so I thought to share this small project as it will give you the practical application of both keypad and LCD. And if you are new to 8051 Microcontroller then its ...
