Arduino

Blinking an led is basic getting started program/project through which every newbie has to go through upon entering the field of microcontrollers(arduino, pic stm32 etc). After blinking led newly entrants try to explore more features of the particular microcontroller by making some diy(do it your self) projects. Led dimmer or intensity/brightness control of led using ldr(light dependent…

In the previous tutorial, we learned how to display custom characters on a character LCD. Character LCD is the most commonly used display device in embedded systems and circuits.  Although character LCDs are from sophisticated, they provide a simple interface that’s easy to use and learn. They also convey useful information about operating conditions, warnings,…

An electrical design engineer by profession, Sandeep Sharma is a part time hobbyist who likes to experiment with electronic projects, especially involving Arduino. With an aim to share his knowledge about arduino and embedded projects, he owns a website as well as a YouTube channel through which he showcases certain interesting projects. In one of his Arduino based projects, he made a unique use of old DVD drives to build a DIY CNC Plotter at home. This machine is not only inexpensive but also quite easy to construct and operate. Presented here, is one of his exciting DIY projects that illustrates the construction and coding of an arduino based mini CNC plotter.

In the previous tutorial, we discussed scrolling long text strings on a character LCD using Arduino. However, it’s also possible to display custom characters on the LCD. These custom characters are user-defined and are stored in Character Generator RAM (CGRAM) of the LCD module.  The different LCD modules have different Display Data RAM (DDRAM) and CGRAM, which…

In the previous tutorial, we discussed:  The functional blocks of a character LCD How character LCD works and is interfaced with a controller  How to display text on a character LCD In this tutorial, we will learn about scrolling long string of text on a character LCD, which can be tricky. A character LCD module has…

​In this tutorial i am going to make an arduino home security system. One can install this diy arduino security system project on his home main door. The diy arduino security system checks two things. First it checks if some one approached the door? Second it checks if door is opened by the person? When the…

In the previous tutorial, we discussed multiplexing seven-segment displays (SSDs). Continuing with the display devices, in this tutorial, we will cover how to interface character LCD when using Arduino. Character LCDs are the most common display devices used in embedded systems. These low-cost LCDs are widely used in industrial and consumer applications. Display devices in embedded systems…

In the previous tutorial, we discussed interfacing RGB LEDs with Arduino. In this tutorial, you’ll learn how to interface seven-segment display (SSD) when using Arduino.  When interfacing with any kind of display device, Arduino and other controllers use digital output or serial communication. Driving SSDs by Arduino is as simple as driving an LED on it. The seven-segment…

LED scrolling message boards are widely used in: Notice board displays Public advertising boards Passenger information display boards in BUS/TRAIN/TRAM/MATRO, etc.  Name or signboards of shops Most of these scrolling message boards are made up of a single RED-color LED. However, currently, there are multi-color LED boards and RGB LED boards are also available. In…

In the previous tutorial, we discussed analog input when using Arduino. So far, we have covered four out of the five ways that controllers can interface and interact with other electronic components and devices. This includes digital output, digital input, analog output, and analog input.  In this tutorial, we discuss how to interface RGB LEDs using Arduino.…

In the previous tutorial, we discussed analog output in the form of PWM signals when using Arduino. We generated a PWM wave from Arduino by employing the analogWrite() function that approximates to a rectified sine wave. It, then, uses that analog output to fade an LED.  A controller can interface and interact with external electronic components…

In the previous tutorial, we discussed the digital input process for using Arduino. We also explained push buttons (momentary type buttons) and how to use them for data or command input via a digital input.  Any controller can interface and interact with other electronic devices in five ways: digital output, digital input, analog output, analog input,…

An LED chaser or sequencer is a popular LED driving circuit. It’s used in running-light rope displays to flash different lighting patterns. In a chaser or sequencer circuit, a controller commands the sequence and timing of the flashing LEDs to illuminate different kinds of lighting patterns.  This LED chaser is built on Arduino UNO. Arduino is…

In the previous tutorial, we discussed digital output from Arduino to drive an LED. A controller can interface and interact with other devices in five ways: digital output, digital input, analog output, analog input, and serial communication.  In this tutorial, we will use digital input from Arduino to read the state of a tactile switch…

In the previous tutorial, we discussed the basics about Arduino sketches, with a a quick Arduino language reference. Now, it’s time to get our hands dirty. Interfacing LED and driving digital output from a source is the “Hello World” of embedded systems.  As discussed in the previous tutorial, a microcontroller interfaces and interacts with other…

The previous tutorial included a discussion about the tools and components necessary to get started with Arduino. However, before starting with Arduino UNO (or any other Arduino board) — and experimenting with hardware projects on various sensors, actuators, and modules — it’s important to get through the basics of Arduino sketches and the embedded C…

Arduino are single-board microcontrollers that are easily programmable through a USB connection. They are used with electronics to design embedded system prototypes, the Internet-of-Things (IoT), and electronic gadgets.  Much like other microcontrollers, Arduino provides software-backed computing and embedded control to basic electronics applications. That means getting started with Arduino is no different than with other…

Embedded electronics are in a countless number of devices and appliances, with microcontrollers at the heart of the operation. A microcontroller is a compact integrated circuit that controls a specific operation in an embedded system. There was a time when only BASIC stamp microcontrollers, with a simple interpreter, were available for designing, prototyping, and testing…

In the previous tutorial, we discussed manipulating data values in lists and byte arrays. Python also has mutable unordered collections like sets and dictionaries. Let us see how data values/objects in sets and dictionaries can be manipulated. Sets Sets are unordered mutable collections of items. The items in a set can be any arbitrary immutable…

Here is a simple project/tutorial in which i will teach you about how to display ASCII characters on character lcd’s. In this tutorial i am using 16×2 lcd. You can use any other size of lcd if you want but be sure to change the lcd initialization statements in the code. Character lcd’s have a…