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TheMPLAB® ICD 4 Beats Out the MPLAB® ICD 3 in Programming Speed

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Sponsored Content

Are you wondering how the new MPLAB LCD 4 In-Circuit Programmer compares to the MPLAB lCD 3?

Then check out this article published by DesignSpark:

Following on from the MPLAB® ICD 3 - the much loved and most popular production programmer for Microchip - comes the New MPLAB® ICD 4 in-circuit debugger/programmer launch...

Switching mechanism for Linear Regulator Single Cell Li-ion Battery Charger using microcontroller and relay

Contributor: 

Diksha

In the previous tutorial, the Constant Current (CC) Source of 60 mA and Constant Voltage (CV) Source of 4.2 V were designed using LM317 voltage regulator IC. The constant current source is to be used for constant current mode of the battery charging while the constant voltage source is to be used for constant voltage mode of the battery charging. During the designing of constant current source and the constant voltage source, testing a Li-ion battery before charging it was also discussed. Check out the previous tutorial “Basics of Li-ion battery charging” for learning about the basics of Lithium ion batteries, their charging methods and topologies.

Alcohol and Smoke Detection in Prohibited Areas

Contributor: 

Hari Prasaath K
AVR Atmega 32 based Alcohol and Smoking Detector Circuit Smoking and alcohol are hazardous to health. Also, the consumption of alcohol is one of the reasons behind many anti-social incidents. That is why, smoking and consumption of alcohol is prohibited in many areas like it is prohibited in schools, colleges, hospitals and public transport like buses and trains. In fact, these kind of activities must be prohibited in all kind of public places. Despite rules of prohibition, there are many incidents when people are found not abiding the rules. In such case, for law enforcement, there must be some system to detect infringement of such laws and the authorities must be sent an alert at time.
 
In this tutorial, an electronic system for the same has been designed.

Hand Gesture Controlled Wireless Robot

Contributor: 

Hari Prasaath K
The wireless robots are controlled in many ways. Usually, these robots are controlled with the help of a remote control which connects with the robot via Bluetooth, Wi-Fi or RF interface. The remote control has physical buttons to move the robot in different directions.
 
The use of a remote control having buttons to control a robot has a drawback when the robot needs to be controlled instantly and precisely. It involves delay due to the response time of the human handling the remote control. The response time in controlling the robot can be reduced by providing some sort of advanced human interfaces like controlling the robot via gestures, eye movements or brain waves.

Arduino Based Rotating Head Obstacle Avoiding Robot

Contributor: 

Hari Prasaath K

Arduino based Autonomous RobotAn autonomous robot is a robot that is capable of moving on its own in an unknown and unstructured environment. An autonomous robot is equipped with software intelligence to sense its environment, detect obstacles in its path and move around an unknown environment overcoming the obstacles.

There are many robotic designs that are employed in designing of autonomous robots. These designs are usually developed considering the physical environment in which the robot has to be deployed. There are autonomous robots like snake robots, walking robots, autonomous drones and autonomous robotic cars or rovers.

Texas Instruments Introduces its First Educational Robot named the TI-Innovator Rover

Submitted By: 

Neha Rastogi
Texas Instruments, a global semiconductor design, and manufacturing company has unwrapped the company’s first robotics solution for middle and high school students rendering an enhanced experience of learning STEM subjects. Students will now be able to write programs on their IT graphing calculators that will get the Rover’s wheels turned. This would help their minds learn things in a fun, interactive way.
 
The Rover connects to the TI-Innovator Hub and either a TI-84 Plus CE or TI-Nspire CX graphing calculator that many students already have. It will also drive their interest and curiosity in Science, Technology, Engineering and Math (STEM) subjects. Those who don’t have any exposure to coding or robotics can get started by writing a simple program to make the Rover draw, dance, or even crash.

Designing Constant Current and Constant Voltage Source for Single Cell Li-ion Battery Charger

Contributor: 

Diksha
Battery linear charger real time circuit arrangementIn the previous tutorial, the basics of Lithium ion batteries were discussed. Also, it was discussed how it is important to handle these batteries with care. as mentioned in the previous tutorial, that Lithium ion batteries need to be charged using CC-CV method, in this tutorial, a Li-ion battery charger for a single-cell Li-ion battery of nominal voltage 3.7 V will be designed. 
 
There are charger modules available in the market which can be used to charge the Li-ion batteries. In this tutorial, a charger built using the basic electronic components including Linear Regulator will be designed from scratch. The charger circuit will be customized as per the battery specifications and the charging requirements.

Joystick Controlled Wireless Robot

Contributor: 

Hari Prasaath K
In one of the previous projects "Hand Gesture Controlled Wireless Robot", it was discussed how remote controls with switches or buttons used for controlling wireless robots have a disadvantage in controlling the robot due to response time factor of the human handling it.
 
As a solution to the problem, use of advanced human-computer interfaces like the gesture recognition, eye movement tracking, and brain waves was suggested. Of which, hand gestures were used in the previous project to control the robot. In this tutorial, a wireless robot will be designed that will be controlled by the joystick. A joystick is not a new input device but it provides better control over the subject. It is easier to use and handle by a human operator.

Designing 12V Lead-Acid Battery Constant Voltage Limited Current Charger for UPS

Contributor: 

Diksha
18-0-18V Step down transformerIn this tutorial, a constant voltage charger for the 12V lead acid battery will be designed. The lead-acid batteries can be charged in different ways or modes. In this tutorial, a constant voltage charger will be designed for charging the lead-acid battery. The battery is required to be supplied limited current which saturates once the peak terminal voltage is achieved in the charging process.
 
Depending on the per cell voltage of the 12V battery, the maximum rated voltage of the battery varies from 13.5 V to 14.6 V. In this tutorial, the charger circuit is designed for charging a lead acid battery having peak terminal voltage of 14.4 V.

Introduction to Uninterruptible Power Supply (UPS) and its design

Written By: 

Diksha

The Uninterruptible Power Supply (UPS) is an electronics device which supplies power to a load when main supplies or input power source fails. It not only acts as an emergency power source for the appliances, it serves to resolve common power problems too. Any UPS has a power storage element which stores energy in the form of chemical energy like the energy is stored in batteries.

It is like energy is stored in the form of motion in a flywheel. That is why these devices are also called battery backup or flywheel backup. The UPS not only provides emergency power, they also help to sort out common power related issues like providing protection from input power interruptions, protection from overvoltage, output voltage regulation and stabilization.