Programming

Web and system programming - tutorials on C++, PHP, JavaScript programming, project explanations and much more!

Principle of operation of analog pins of Arudino Uno

@Nenad Dimitrovski
2021-11-092022-10-07

The aim of this project is to get acquainted with the way of using the potentiometer, the operation of analog inputs and reading the values from the sensors (in this case the role of the sensor is played by the potentiometer). A theoretical explanation is given at the beginning of the video. In the following, we will see what it looks like when we read the voltage that we control with a potentiometer from the analog input of the Arduino, and how we use that voltage value to control the light intensity of the LED.

The concept and application of "pull up" and "pull down" resistors

@Nenad Dimitrovski
2021-10-282022-10-07

When using a microcontroller, when the pin we use as an input is not set to "HIGH" or "LOW" state, but its state "floats" between these two values, we say that it is in a state of high impedance. This is a condition that we definitely want to avoid because it leads to irregularities (unpredictability) in work and that is why we introduce a concept like"pull-up"and"pull-down"resistors. These are not special types of resistors, but resistors that allow us to maintain the desired state of the logic circuit regardless of the conditions. Arduino pin is connected via this resistor to a constant value, either to the + 5V power supply or to the GND (ground). In the first case it is a "pull-up", while in the second we are talking about a "pull-down" resistor.

Night light - Arduino project

@Nenad Dimitrovski
2021-07-282022-10-07

Time flows, and as it flows, I managed to force myself to make this video tutorial for ArduinoThis time the theme is a circuit that turns the night light on or off based on the brightness of the room. This is a nice thing, especially when there are small children in the house, so it is necessary for the light to be turned on at all times. Of course, there is also a modification of this circuit, so that it can be used for, say, street lighting. The positive aspects of such a project can be easily seen and enumerated.

Udemy JavaScript certificate

@Nenad Dimitrovski
2021-07-222022-10-07

After a lot of time, I managed to listen and do the final project on one of (in my opinion) the best JavaScript courses on the Udemyplatform. This is the course "The complite JavaScript Course 2021: From Zero to Hero" by Jonas Schmedtmann (I hope I translated his name well). I might not have written about the certificate itself and this particular lecturer, but my enthusiasm for his approach to the course, how it was designed, what it encompasses, as well as the way he explains, certainly influenced the decision to write this text. The very fact that the course contains less than 70 hours of video material speaks of its substantiality.

Hello (Arduino) world - flashing LED

@Nenad Dimitrovski
2021-07-092022-10-07

Some time ago, I started to discover a new area in programming and electronics, it's about the Internet of Things, a little more precisely about microprocessors and microcontrollers. As I announced in the first text on the blogone of my target areas is Arduino and it's time for the first post! This text is different from the others, this time in addition to the text, video material for the first project is included, something like "Hello world!" - flashing LED. I follow trends a bit, or at least try, but I definitely enjoy doing this!

Forgotten password reset functionality

@Nenad Dimitrovski
2021-03-312022-10-07

For all existing web services that require user profiles, one of the unavoidable functionalities is the reset of the forgotten password. Thus, Chat App - Web Application must also provide this option for users who have forgoten their password. Another reason why this option is needed is definitely security. Somewhere it is recommendation, and somewhere is an obligation to periodically change passwords precisely in order to maintain the level of security of both the account and the application itself, ie in the general sense of the system we use.

E-mail verification and account activation

@Nenad Dimitrovski
2021-03-172022-10-07

As one of the improvements to the chat application In the previous post I mentioned the possibility of e-mail verification and as a logical sequence of things account activation that was created in the registration step. The mechanism itself is not complicated, it required an additional two columns in the user table, as well as an additional verification page with accompanying background verification and activation processes. In this text, i will cover this topic.

Chat App - Web Application

@Nenad Dimitrovski
2021-03-102022-10-07

Looking for ideas for exercise and entertainment, I came across an interesting, seemingly simple application based on technology/ies – PHP, MySQL, JavaSrcipt, Ajaxand it's about chat web app🙂. There is a three-hour video clip that leads through the creation of the application, of course the text variant is also available, and most importantly the complete code. I would like to thank Coding Nepal for the work, effort and idea!

JavaSrcipt - Smooth scrolling tutorial

@Nenad Dimitrovski
2021-03-032022-10-07

The previous post for most of you belongs to the "news from the margin" domain, for me it is one of the possibilities that works very well. But now I will deal with another tangible topic, and it is related to JavaScript. As I mentioned, JavaScript is a new area for me, but it occupied almost all of my attention in a short time. Wanting to become a better programmer, and as I walk the path of a Web developer, I realized that knowing Frontendand Backend Backendwas essential