Hello readers, I hope you all are doing great. In this tutorial, we will learn how to update a webpage using Server-Sent Events and the ESP32 web server.
What is Server-Sent Events (SSE)?
It is a server push technology that enables the client devices to receive automatic updates from a server over HTTP (Hypertext Transfer Protocol) connection. SSE also describes how the server can initiate data transmission towards the client once an initial connection with the client has been established.
We have already posted a tutorial on how to implement Web socket protocol with ESP32 which is also a protocol used to notify events to a web client. Both the Server-Sent Events (SSE) and Web-Socket technologies seem to be quite similar but they are not.
The major difference between the two is that SSE ...
Hey Everyone! I hope you are doing great and having fun with your lives. I am back to give you a daily dose of information so you can grow and progress in your relevant field. Today, I am going to uncover the details on the Introduction to 2n4401. It is an NPN (negative-positive-negative) bipolar junction transistor (BJT) which is used for general purpose amplification and switching purpose. It consists of P doped semiconductor that exists between the two layers of N doped material.
I'll give you a brief detail about this transistor so you don't have to go anywhere for finding the information regarding this transistor. You can also check the Introduction to 2n4402 which is a complementary PNP transistor of this NPN transistor. Let's get started.
...
Update: We have created a new version of this library, which you can check here: Arduino Mega 2560 Library for Proteus V2.0.
Hello friends, hope you all are fine. In today's post, I am going to share Arduino Mega 2560 Library for Proteus. In the previous post, I have shared the Arduino UNO Library for Proteus and I have mentioned that I am gonna share more Arduino Libraries soon. Actually these days I am quite excited about this Proteus component designing and I am designing the Arduino boards as a starter. So, till now I have designed two Arduino boards in Proteus. First one was Arduino UNO which I have provided for download in previous post and today, I am going to share Arduino Mega 2560 Library for Proteus.
In the coming posts, I am gonna sh ...
Hi Guys! Hope this finds you well. I welcome you on board. Thank you for clicking this read. In this post today, I’ll be explaining the Introduction to BC559.
BC559 is a bipolar junction transistor used to drive loads under 100mA. It falls under the family of PNP transistors and is mainly known as a current-controlled device. Where small current at one terminal is used to drive large current change at the remaining two terminals.
Read this post all the way through, as I’ll be touching pinout, working, datasheet, physical dimensions, power ratings, and applications of a BC559 transistor.
Let’s get started.
Introduction to BC559
BC559 is a PNP bipolar junction transistor mainly employed for amplification and switching applications.
It is com ...
Hello friends, I hope you all are doing great. In today's tutorial, we are gonna have a look at detailed Introduction to S8550. S8550 is a PNP transistor henceforth during reverse biasing both the collector and emitter will be open and during forward biasing these will be closed. The value of gain is 300 this value governs the magnification ability of the transistor. Its gain is very high therefore it is used for magnification solicitations.
When it is completely biased it can permit a maximum 700mA current to drift crosswise the collector and emitter. This phase is named as Saturation Region and the distinctive voltage permitted across the (VCE) or (VCB) can be 20V and 30V correspondingly. In today’s post, we will have a look at its protection, ...
ESP32 module comes with multiple inbuilt features and peripheral interfacing capability is one of those features. ESP32 module also consists of an inbuilt temperature sensor, but that can only measure the temperature of the ESP32 core not the temperature of the surrounding environment. So it is required to use a peripheral sensor to measure the temperature of the surrounding environment like home, garden, office etc.
Hello readers. I hope you all are doing great. In this tutorial, we will learn how to interface DHT11 (temperature and humidity sensor) with the ESP32. Later in this tutorial, we will discuss how to share the sensor readings obtained from the DHT11 sensor to a web server.
Before moving towards the interfacing and programming part, let’s have a short introduction to the DHT11 ...
Hi Friends! I welcome you on board. Thank you for clicking this read. In this post today, I’ll detail the Introduction to IRF740.The IRF740 is an N-channel power MOSFET used for extremely fast switching applications. It comes with a power dissipation of around 125W and can support loads up to 400V. The maximum drain current of this device is 10A and the drain-source capacitance is 1450pF.
I suggest you read this post till the end as I’ll describe the complete Introduction to IRF740 covering datasheet, pinout, features, and applications.
Introduction to IRF740
The IRF740 is an N-channel MOSFET that comes with 125W power dissipation. This is the power device that dissipates during the working of this component.
This device is mainly used for fast switching applications and comes ...
Hello friends, I hope you all are doing well. In today's tutorial, I am going to share a new Proteus Library of Single Cell Battery. These single-cell batteries are not present in Proteus, so we have designed them, I hope you guys will find them helpful.
This Proteus library has 5 Single Cell Batteries in it, we have designed the most common ones. Four of these batteries provide 3.7V, while one provides 12V. First, let's have a look at
What is a Single Cell Battery???
Single Cell Batteries are available in different voltage ranges and normally provide 3.7 volts.
Single Cell Battery is used in small electronic projects i.e. toys, clocks, alarms, calculators etc.
Few Single Cell Batteries are shown in the below figure, which we have simulated ...
Hi Friends! Glad to see you here. I welcome you on board. In this post today, I’ll be discussing the Introduction to BC327. BC327 is a bipolar junction transistor that falls under the family of PNP transistors. It is composed of silicone material and is used to drive load under 800mA. It’s a current-controlled device that carries three pins where small current generated at the one terminal is used to control large current at the other terminals. Read this post all the way through as you’ll get to know all nuts and bolts of BC327 covering pinout, working, power ratings, applications, and physical dimensions.
Let’s get started.
Introduction to BC327
BC327 is a PNP bipolar junction transistor that comes in the TO-92 package and is used for switchi ...
Hello everyone! I hope you all will be absolutely fine and having fun. Today, we will have a look at the DHT11 Arduino Interfacing. DHT11 is an embedded sensor, used to measure both temperature and humidity of the surroundings. It is made up of two different parts i.e. capacitive humidity sensor and a thermistor. DHT11 is a slow sensor but is quite efficient for the applications where we need to do some basic analog data exchange. There is a small chip inside this sensor which performs the function of analog to digital to analog conversion and gives the results for temperature as well as for humidity in digital form. This digital signal can be read easily through any micro-controller.
LM335 is another temperature sensor and to understand today's p ...
