UART (Universal Asynchronous Receiver/Transmitter), is a hardware device (or circuit) used for serial communication between two devices. In this blog, we will discuss what UART communication is and how it works. We’ll also write a simple sketch to show it’s with the Arduino Uno.

How does UART work?

The UART protocol requires two wires between the devices that are communication, one for each direction of communication. Each of these devices have an independent transmitting and receiving module. These modules do not have to be in sync with each other, hence asynchronous.

When a device transmits data, it sends it as a series of pulses, where each pulse represents one bit of data. These pulses are sent with a particular, predefined timing called baud rate that must be understood by both devices. …

Pulse Width Modulation or PWM is a technique for obtaining analog outputs with digital means. It used to vary the width of the pulses in a pulse-train and has many applications such as controlling the brightness of LEDs, voltage regulation, audio signal generation, speed control of servo motors etc. In this blog, we will learn about PWM and how you can get the PWM output from the digital pins of Arduino. If you’re new to the Arduino, you can have a look at its basic setup and a beginner’s project out here.

Basic principle of PWM

The state of the Digital Input/Output pins in Arduino is either High(1) or Low(0), where High implies the voltage is approx 5V and Low for 0V. But what do you do, if you want a voltage between these? Well, we use the PWM technique to achieve this. …

Timers are an important part of the functionalities in microcontrollers and play a vital role in controlling various aspects of it. A timer or a counter is a piece of hardware built in the Arduino board to measure events and carry out specific tasks at a particular interval of time.

Few of the applications of the timers are as follows:

  1. PWM — Pulse Width Modulation is a method to control the duty cycle, thereby the digital output of the controller. It has a wide range of applications from motor control to LED dimming and much more.
  2. Timer Interrupts — In a lot of cases we need to count the exact time before an event occurs or give a desired output of a specific pin after some time — timer interrupts help us achieve these actions. …

The Arduino Uno is one of the most popular microcontroller boards used for a variety of purposes — from basic DIY projects to complex robotics. In this blog, we’ll be taking a closer look at the Arduino hardware, and more specifically, the Arduino Uno pinout. The Arduino Uno pinout consists of 14 digital input/output pins, 6 analog inputs, a power jack, USB connection and a ICSP header. The versatility of the pinout provides applications of many different options such as driving motors, LEDs, reading sensors and more.

Image for post
Image for post

Let’s look at the different pins on the Arduino and their functionalities:


The Arduino Uno can be powered via the USB connection or with an external power supply. The Arduino can input and output analog signals as well as digital signals. …

What is Arduino?

Arduino is an open-source electronics platform based on easy-to-use hardware and software. Intrinsically, Arduino boards read inputs such as — light on a sensor, a finger on a button, or a Twitter message and transform it into an output like — activating a motor, turning on an LED, publishing something online. Over the years Arduino has been the brain of thousands of projects, from everyday objects to complex scientific instruments. Arduino was born at the Ivrea Interaction Design Institute as an easy tool for fast prototyping, aimed at students without a background in electronics and programming. …

Image for post
Image for post

Any breakthrough in technology is incomplete without setting foot in the gaming arena. Gesture recognition holds the promise of new frontiers in user interface, which has redefined the entire gaming experience altogether. This natural way to interact with our digital world through gestures has truly cast an indelible impression and enticed them to increase their engagement. While gesture based technology has been around for decades it wasn’t until the advent of the Microsoft Kinect — that mainstream consumer electronics took notice. …

Image for post
Image for post

It is of little surprise that falling is often accepted as a natural part of the aging process. Falls have turned out to be one of the biggest risks among the elderly population leading to serious injuries & ranking as the second incident that leads to deaths over the world. Aging people are typically frailer, more unsteady and have slower reactions, thus making them prone to fall and get injured as compared to younger individuals. The risk of falls in older adults also restrict their social life and curb their independence. …

Image for post
Image for post

At Vicara, we aim to ideate. Aspire to invent. And strive to innovate. Our company pioneers technology that enhances and augments the capabilities of humans, enabling them to engage better with their surroundings, digital & otherwise. Vicara is developing a range of technology interfaces, platforms and solutions, which integrate a blend of Voice, Gesture and Image Recognition to serve a wide array of applications across multiple consumer and enterprise markets. But at the heart of the company lies a core mission — to conceive technology that is immersive, intuitive & interactive.

But how is the company able to revolutionise technology? Does it have a secret formula? …

The paradoxical prowess of Artificial Intelligence lies in its astute ability to rapidly revolutionise our reality. Didn’t quite understand what I meant? This is exactly why AI exists. To make our lives more easy. More effective. And more engaging. Artificial Intelligence has penetrated into almost every part of our lives and continues to drive the daily dynamics with deft dexterity. Now when it comes to Marketing AI has two facets — one which focuses on selling its essentiality and the other which focuses on evading the ephemerality of an entity. While it has simplified digital marketing, it has also amplified its impact and implementation. …

Did you know that more than half the world is using social media at this moment? That’s right! About 90% of marketers claimed that social media generated immense exposure and engagement for their company and that’s just the tip of the iceberg. Social media has formed an integral ingredient of a marketing strategy owing to the importance it plays in our individual lives as well. For a marketer there can be nothing better than a common platform that his audience uses for entertainment, knowledge, communication and as a source of revenue at the same time. …

Aditi Shah

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store