Home Appliance control using Android Phone

This project is a fine combination of Android mobile technology and embedded
system. An application should be installed on android mobile handset to control
various home appliances. User can send commands using that application.
Wireless controlling technique used in this project is Bluetooth technology. This
project consists of a Bluetooth receiver. This Bluetooth device is connected to the
circuit which has a decoder. This decoder sends code for respective command
sent by user. Then the respective device connected to the circuit will be turned on
or off depending on the command given.

Digital-weather-station-with-data-storage Logger

Throughout time we”ve been fascinated by the weather – studying signs of change
and making and acting on predictions. Today we can link modern instruments to
computers to reduce human error and automate record keeping. Aim of the project
is to monitor weather conditions, including temperature, atmospheric humidity,
and solar light intensity. Local weather measurements are extremely important to a
wide range of professions, from horticulturists to fire fighters. It provides aroundthe-
clock monitoring of various types of applications. For example, it can be used
in a greenhouse to manage climate control and help promote favorable growing
conditions. In solar power applications, it can verify the performance of
photovoltaic (PV) array systems by monitoring solar radiation, DC power, and
other parameters. On green roofs, it can help researchers understand performance
by tracking air temperature, turf temperature, soil moisture, and rainfall.

Alcohol Detection with vehicle controlling system

The main purpose behind this project is “Drunk driving detection”. Now days,
many accidents are happening because of the alcohol consumption of the driver or
the person who is driving the vehicle. Thus Drunk driving is a major reason of
accidents in almost all countries all over the world. Alcohol Detector in Car project
is designed for the safety of the people seating inside the car. This project should
be fitted / installed inside the vehicle.

Robot control using Android Phone

Our robot expert Gaurav Khadasane has come up with another innovative way to control a robot. He is controlling his robot from an android phone (with a Android GUI application) over bluetooth. Project uses our favourite 8051 microcontroller and HC-05 bluetooth module.

In this project 8051 and bluetooth module are communicating over uart @9600bps. Bluetooth module HC-05 is controlled via simple AT commands. This module comes in SMD package and works on 3.3v power supply. The BT module is a SPP supported profile so it can be connected easily to any controller or embedded device. In this profile the data sent and receive to module directly comes on the RX pin of microcontroller. It becomes really easy to make your device bluetooth compatible.

L293D H-Bridge motor driver are used to control two DC motors. A readymade compact size chassis is used to avoid the chassis assembly comlexities The chassis contains 2 decks the lower is used for BO motors fitting the upper is used as a battery stack. On top plate the controller board is mounted by screw fitting. -

Microcontroller Based Integrated Circuit tester

An Integrated Circuit tester (IC tester) is used to test Logic Gates. We can easily test Logic gates
using this kind of an IC tester. For testing an IC, we need to use different hardware circuits for
different ICs; like we need a particular kind of tester for testing a logic gate. Which involves
more complication and time involved will also be more. So here’s an IC tester to overcome this
problem. Unlike other IC testers, this is more reliable and easier since we don’t need to rig up
different kind of circuits for different kind of ICs, each time we need to test them.
Unlike the IC testers available in the market today which are usually expensive, this IC tester is
affordable and user-friendly. This IC tester is constructed using 8951 microcontroller along with
a keyboard and a 16 x 2 alphanumeric display unit. Since it is programmable, any number of
logic gates can be tested within the constraint of the memory available.
To test a particular digital IC, one needs to insert the IC into the IC socket and select the IC using
the keyboard and then press the “ENTER” key. The IC gets displayed on to LCD display unit

Microcontroller based Security System using RFID

This project aimed to develop a wireless system to detect and allow only the authorized persons. The system was based on Radio Frequency Identification (RFID) technology and consists of a passive RFID tag. The passive micro transponder tag collects power from the 125 KHz magnetic field generated by the base station, gathers information about the Tag ID and sends this information to the base station. The base station receives, decodes and checks the information available in its Database and Manchester code was used to send those information. The system performed as desired with a 10cm diameter antenna attached to the transponder. The Base Station is built by using the Popular 8051 family Microcontroller. It gets the tag ID and if the tag ID is stored in its memory then the microcontroller will allow the person inside.


RPM Counter

Counting the revolutions per minute (RPM) of motors determining the motor speed is essential in the industrial automation. It is useful especially for closed-loop control systems where proper action can be taken in case the actual RPM deviates from the set RPM.

Here is a project based on microcontroller AT89C4051 that measures and shows on an LCD the RPM of a running motor. Using a proper transducer, first the rotations of the motor are converted into pulses. The generated pulses are counted by the microcontroller for a fixed time (say, one second). The count is multiplied by a factor to get the exact RPM and then displayed; if time is one second, the factor is 60.

DC Motor Speed Control

Abstract: The speed control of DC motor is very crucial in applications where precision and protection are of essence. Purpose of a motor speed controller is to take a signal representing the required speed and to drive a motor at that speed. In this paper PWM based speed control of DC motor through RS232 with PC goal of this as Role of electrical drives is a major concern in industrial automation. Industrial applications use dc motors because the speed-torque relationship can be varied to almost any useful form for both dc motor and regeneration applications in either direction of rotation. DC motors feature a speed, which can be controlled smoothly down to zero, immediately followed by acceleration in the opposite direction without power circuit switching. Having intelligence PC available to control operation of speed of motor which can increase productivity in broad range of industry. Personal computers or Laptops are working on Register Level while our controller is working on TTL so we have to use a level shifter that is MAX232 IC which can change the platform for serial communication. This software provide variable baud rate for operation, and connect PC to MAX232 using serial cable.

IR Remote Based Home Appliances Control

The present project describes a design and implementation of an infrared (IR)
remote control signal decoder which can be used for various home control
applications. For a demonstration we have designed remote controlled for ONOFF
power supply switch. The entire system is based on microcontroller that
makes the control system smarter and easy to modify for other applications. It
enables the user to operate the mains power switch from about 10 meters away.

Soil moisture Irrigation System

The project title itself indicates that the system checks the moisture content in the
soil, based on that pumping motor will automatically pumps the water into the field. Here
we are using soil moisture sensor. By using this sensor, we can find whether the soil is
wet or dry. If it is dry, pumping motor will pump the water. In this project, the main
controlling device is AT89S52 microcontroller. Here soil sensor will give the status of
the soil to the microcontroller, based on that microcontroller will display the status of the
soil on the LCD and switch on or off the pumping motor through relay. The pumping
motor will pump the water into the field until the field is wet which is continuously
monitor by the microcontroller.