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New GSM/GPRS Projects on PIC and Arduino

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Arduino based Automatic School Bell System

Contributor: 

Pawan Kumar
Arduino based Automatic School Bell SystemIn any school, the classes are organized in periods and beginning of a period or break is alerted to the students and teachers by ringing the school bell. Conventionally, the school bell is rang by a peon or multi-tasking assistant. What if there would be a microcontroller based automatic school bell which rings itself according to a fed timetable. This project is the implementation of same functionality.
 
The project is an Arduino Mega based automatic bell system which can be configured for every class of the school. It is assumed that the school has five periods organized in a day for different subjects and have two breaks in between. The first break occurs after two periods and the next break occurs after the next two periods. After the fifth period, the school is over. The project allows to set duration for each period and assign subject from a list of subjects to each period. The user can set the time-table for six days of the week from Monday to Saturday. The user can also set the duration of both the periods.

Fujitsu Develops AI-Based Technology to Retrieve Similar Disease Cases from a Computed Tomography Database

Submitted By: 

Neha Rastogi
Fujitsu has announced the development of an AI-based technology that will retrieve similar disease cases from a computed tomography (CT) database of previously taken images. It has been developed with joint efforts of Fujitsu Laboratories and Fujitsu R&D Center Co. Ltd. It will work by retrieving similar cases of abnormal shadows expanding in a 3-dimensional manner.
 
There are existing technologies used by doctors to specify an area of focus in a certain slice image and retrieve other patients with similar slice images. Such techniques have proved to be beneficial when the abnormal shadows are concentrated at one place, like an early-stage lung cancer.

Internet based Home Automation System

Contributor: 

Pawan Kumar
Internet based Home Automation SystemHome Automation is the new trend among urban households. Home automation system allows controlling home appliances through a remote. The remote can be an IR remote, RF remote or even a mobile phone. An internet based home automation system could be most accessible setup because such a system can be controlled from anywhere and anytime.
 
Like, one is returning home and before leaving office and getting into the car, he can switch on the AC of his living room so that by the time he reaches home, the living room is already cooled. Such an advantage can be availed only on a home automation which is controlled over the internet.

China Unwraps World’s first Driverless Rail Transit System with Autonomous Technology

Submitted By: 

Neha Rastogi
Today we are living in a world where everything has become automatic while manual efforts have become minimal. Autonomous vehicle technology is one such concept which is currently being explored to its core. Recently, a Rail transit firm in China named CRRC has introduced a train that runs on the road instead of rails. 
 
This is the world’s first train that doesn’t need rails to travel; rather it uses virtual dotted lines on the road for transit. The technology has been termed as ART i.e. Autonomous Rail Transit while the vehicle has been labeled as a “Smart Bus” by CRRC. It’s a 30-meter long bus which is operated electrically and is fitted with sensors that follow the virtual rails on the road while adapting to the surroundings and situations in real time.

Mobile App Controlled Robot

Contributor: 

Pawan Kumar

Mobile App Controlled RobotAny machine programmable by a computer and capable of performing defined tasks is called a robot. There are many types of robots and robotic cars are one among them. The robotic cars are generally used to reach out to places where it may be dangerous for humans to reach or stay due to physical or environmental conditions.

The robotic cars may be used for surveillance or for performing some mechanical tasks in a remote location. The robotic cars make the most sense when they are controlled by some wireless technology. In this project, a robotic car is designed to sense ambient temperature, humidity, light intensity and detect obstacles in the path. The robot is controlled by a mobile app which connects with the robot through Bluetooth.

Arduino Based Alcohol Detector

Contributor: 

Venugopal M
Alcohol detectors are commonly required by the law enforcement. The police need to catch and check people who drive after taking alcohol. Driving after taking alcohol can result in serious accidents. People who drive after consuming alcohol not only risk their own life but also of others. That is why police need to remain alerted and verify any person who they found suspicious of driving after drinking. For the verification, they use an instrument called alcohol detector.
 
This project is aimed at building a similar device which will detect the consumption of alcohol by a suspect and display a digital reading indicating the level of alcoholic consumption. The device will also have a dial which will rotate and an LED indicator which glows to indicate a dangerous level of consumption by a suspect.

Pairing two HC-05 Bluetooth Modules and share data between them

Contributor: 

Venugopal M

From the previous project, it has been already learnt to configure control parameters of a Bluetooth Module. In this project, it will be demonstrated that how two Bluetooth modules can be paired together and allowed to share data between them. For pairing of two Bluetooth modules, one of them needs to be configured to Master role and other needs to be configured to Slave role. 

Apart from this, both modules should be in Order Response Work Mode so that AT commands can be passed to them. The baud rate of the two modules also need to be same and SPP and INQ must be initiated in both the modules. In order start sharing data between the modules, both the modules should have communication mode enabled by setting CMODE parameter set to 1.

Arduino Based Smoke Detector

Contributor: 

Venugopal M
Arduino Based Smoke DetectorFire hazards are not uncommon. In order to avoid damage from fire accidents, smoke detectors are installed at high-security places. These smoke detectors detect smoke as the fire breakout and invoke an early alarm. This way, before the fire spreads to other parts of the building, people can be evacuated and countermeasures can be done immediately. In this project also a smoke detector has been designed.
 
The smoke detector developed in this project not only invokes an alarm but also activates an exhaust fan so that smoke could be removed with immediate action. For the demonstration purpose instead of the actual exhaust fan, a DC motor has been operated in the project. The concentration of smoke is detected by the MQ-6 sensor and displayed on an LCD display.

How to turn an old Hard Drive into DIY Speakers?

Submitted By: 

Neha Rastogi
It’s always fun to work on an electronic project especially when it lets you recycle old objects that are otherwise thrown into the trash. Afrotechmods is a website run by an electrical engineer nicknamed as Afroman who publishes a bunch of interesting experiments with electronics through videos. His areas of interest include power electronics, robotics, and mixed signal design. 
 
In one of his videos, Afroman has described an interesting use of hard drive in the form of a DIY speaker. The project has been demonstrated clearly with the help of a video and doesn’t require any software installation. In order to build the speaker, all you need is a hard drive and some easily accessible tools like hex wrench, a multimeter, couple of thin wires, soldering iron, and an amplified audio source.