Earlier we have changed the LED brightness using the Attention and Meditation values. The results were good and we were able to see the variation in the form of brightness. Though we didn’t get much clear variation, we also performed a similar experiment using motor and changed the motor speed. Now let us try one more such experiment and this time we will change the colour of the RGB Led. Also, earlier we have used attention/meditation waves of e meters; this time we will use some of the Brain Waves to control the colour.
How to detect Variation in EEG Signals in the form of LEDs using LM3915 (Part 10/13)
After taking on the experiment of appliance control with relay, I am thinking of analyzing the EEG wave produced by the brain and see the variations in the form of LEDs. It would be really nice if we could see the variations of our EEG signals clearly in the form of some LED patterns so as to analyse how much variation it is producing by various thinking processes. Let’s get started.
How to Apply Brain waves to control an Appliance Using Relay (Part 9/13)
In this article I am planning to go for some real time applications on Brain wave including Home Automation. This time I have tried to control an appliance using relay. Relay is just a switching device through which we can trigger both AC and DC appliance. Though it also depends on the maximum current that the relay can trigger and the total current our appliance needs. I believe it will be nice to control home appliances just by thought and higher level of concentration. So let’s see more details about it.
Using Brainwaves to buzz alarm after achieving a certain level of Meditation (Part 8/13)
Now presently in this article I am planning to explore more applications of Brain wave. Nowadays I am trying to meditate to keep myself calm. Since meditation helps a person in many ways, I thought to give it a try and it proved to be very helpful. However, while meditating I observed that I could not guess as to how well I am doing the meditation. As a result I decided to use brainwaves to develop a device which could inform me if I achieve a certain level. It can also be helpful for practitioners and meditators in future.
Android Phone Controlled Bluetooth Motion Vehicle
I had been working on a project to make a bluetooth controlled car which is being operated from an Android phone.The basic objective of this project is to make a gaming vehicle which would be controlled by tilting the mobile phone such that the user controls its acceleration as well as directions.The motivation behind my project came basically from the inquisition of Controlling cars using accelerometer in mobile games and PC games.Also we wanted to make such a device which could go into the areas where humans cannot go.Also on seeing many cars used by snake catchers to get the look inside of the snake holesI thought this would be a great idea as the remotes use cell batteries which are not available always but one carry his mobile everywhere.
Introduction to AND Gate
We hope that you know about the basics of logic gates and their use in Electronics. If not, please read our article on Logic Gates. In this article, we will learn about one of the three major Gates i.e. AND gate.In mathematical terms, we can say that AND gate works on the principle of multiplication operation”X” or mulitply. It has 2 0r more inputs and one output. The Output of AND gate is HIGH or 1 only when all the input signals are at high value and on other input values it gives LOW or 0 at output. The operational symbol of AND gate is ‘. (dot)’ or we use no symbol for its representation
Working of OR Gate Using Diode
Till now we have talked about the basics of logic gates and their use in Electronics. For details, please read our article on Logic Gates. Here, we will learn about one of the three major Gates i.e. OR gate.In mathematical terms, OR gate works on addition operation and may have two or more inputs but it produces only one output. An OR gate produces an output of logic 0 or LOW only when all the input values are at logic 0 or at LOW state. Other than this, it always produces an output of logic 1. The operational symbol of OR gate is ‘+’ and the expression for OR gate is Z (output) = x+y+ … (Inputs).
6 Interesting mechanical motion transfer mechanisms you can use in your product design
Product designing often involves challenges of transferring mechanical motion between different parts of the product. A product can involve different types of motion like horizontal, vertical, radial, circular, see saw, spiral etc. The product designer’s community has to intelligently deal with parameters like space, cost optimization, strength, user comfort, look and feel etc. A combination of parts and structure designed to perfection work in synchronization to achieve the desired motion.From movement of a ball pen’s tip to the to and fro motion of the switch’s actuator, there is enough science and wonder in exploring designing methods for all mechanical motions. The factor of easiness and simple working is always fulfilled too. How does it all happen? What is the magic? Have a look at some of the common yet unseen mechanics involved in transfer of motion from the brains of product designers.
Introduction to Wireless Modules
While working on electronics and searching many tools and modules to work on , we have always been looking for some wireless module which can perform few operations on its own and do not need any extra micro controller for that . Have you had the same thought ? While searching for latest RF technologies ,we got to heard about the NRF24LE1 modules . After working on it at EG Labs , we found that it is a very interesting module and every electronics hobbyist must give it a try once in their electronics projects.NRF24LE1 is a 14 pin module, manufactured by Nordic Semiconductors Ltd. The main thing which left us awestruck is that the module has inbuilt 8051 based Microcontroller . This means we can code this module as per our need .
Prerequisite
This article provides helpful information that will be used in article series of Atmega32u4 USB applications. Please refer the below topics when required in the articles. LUFA stands for Lightweight USB Framework for AVRs. It is an open source framework for building USB applications using Atmel USB AVR microcontrollers. It uses the AVR-GCC compilers for the compiling the source code firmware. It supports the following Atmel microcontrollers that contain USB:• 8-bit AVR• 32-bit AVR• XMEGA AVR
ATMEGA32u4 as Mouse
In today’s world, it is very common to use Arduino board to convert ideas into real applications. Generally we use Input/output pins of microcontrollers to implement the logic. What if we want to add the USB functionality in our projects? Yes, it is possible with Arduino boards like Micro/ProMicro or Leonardo. They can be used for building USB based applications. In this article we will use Atmega32u4 of Arduino Micro/ProMicro to build a simple HID (Human Interface Device) Mouse.
Brain Waves: Introduction & Basic Concept
Brain wave is a common term that can be easily found in Science books/newspapers or can be heard from doctors and researchers. Have you ever thought what exactly Brain waves are? How are they produced? What is their role in day-to-day life and how do they affect us? Let me take you through a roller coaster ride exploring Brain Waves alongside its features, types, characteristics, and other details.
Basics of Li-ion Battery Charging
Lithium-ion batteries are another popular type of batteries that are used in the Uninterruptible Power Suppply (UPS) designs. These batteries are commonly used in portable electronics devices. These are low maintenance batteries having high energy density, small size and light weight which makes them suitable for use in most of the portable devices. But, due…
Understanding NeuroSky EEG Chip in Detail (Part 2/13)
Now that we know the basics of Brainwaves and the sensor on which we are working, it’s time to learn about the brain of this brain wave sensor. The main part of any device is its processing part and in the case of Mindflex Sensor, it’s the NeuroSky EEG Chip.Let’s move on to the details so as to know what the chip contains and how does it work.
Random Number Generator with NRF24LE1
Random number sometimes plays an important role in our life. Think of a lottery ticket you have purchased. Now what if a random number taken out of lottery lot matches your ticket number? We will be glad if that happens. Random number generators are also used in making games more puzzling and non-deterministic. Do you know microcontrollers too can generate random number? Today we are going to discuss an interesting feature of NRF24LE1 which is Random Number Generator (RNG).
Working of OR Gate Using Diode
Till now we have talked about the basics of logic gates and their use in Electronics. For details, please read our article on Logic Gates. Here, we will learn about one of the three major Gates i.e. OR gate.In mathematical terms, OR gate works on addition operation and may have two or more inputs but it produces only one output. An OR gate produces an output of logic 0 or LOW only when all the input values are at logic 0 or at LOW state. Other than this, it always produces an output of logic 1. The operational symbol of OR gate is ‘+’ and the expression for OR gate is Z (output) = x+y+ … (Inputs).
USB: Advantages, Disadvantages and Architecture (Part 1/6)
USB i.e. Universal Serial Bus is an interfacing standard through which two devices can communicate with each other. For example, devices like digital cameras, flash drives, mouse, tablets, etc communicate with computer via USB. It was first introduced in mid-1990s with the aim of simplifying the communication between devices. Various companies like Compaq, DEC, IBM, Intel, Microsoft, Nortel and NEC contributed to its development. However, presently it is developed by USB Implementers Forum
Understanding NeuroSky EEG Chip in Detail (Part 2/13)
Now that we know the basics of Brainwaves and the sensor on which we are working, it’s time to learn about the brain of this brain wave sensor. The main part of any device is its processing part and in the case of Mindflex Sensor, it’s the NeuroSky EEG Chip.Let’s move on to the details so as to know what the chip contains and how does it work.
Summing amplifier using OPAM
In this article I will throw some light on Summing amplifier using OPAM. An OPAM i.e. Operational Amplifier can be used to perform mathematical operations such as addition, subtraction, differential amplifier, integrator, etc. In this article we will see how OPAM can be used as addition or summing amplifier.
Explanation of Basic Clipper Circuit in Detail
In this article I will explain a very basic circuit of Clipper using simple components. Clipping circuit is a wave-shaping circuit and is used to either remove or clip a portion of the applied wave in order to control the shape of the output waveform.One of the most basic clipping circuits is the half-wave rectifier. A half-wave rectifier clips either the negative half cycle or the positive half cycle of an alternating waveform, and allows passing of only one half cycle.