Real Time Clock and Calender

Real-Time-Clock cum Calender is a simple micro-controller based project using DS1307 RTC. The micro-controller here I am used is PIC18F4550. The communication between PIC and RTC is through I2C serial communication bus. There is a LCD, which will display the time and date. 

Currently only displaying option is there. Will be upgraded soon...

Frequency Detector

Introduction:

This is a simple microcontroller based project that can be used to find the Frequency of a signal, RPM of a motor or any rotating parts etc. Here I used PIC18f4520. Its not necessary to use 18F series, but I used only for using MPLAB C18 compiler. There is an LCD display, which will display the recieved frequency.

Since I did this for my friend for finding the percentage of detection a of a known frequency I used PWM module also to generate different frequencies depends on the pot value read through ADC.

This video shows a simple demo on the working.

If you want any more details on this contact me.

On Going Works

6 DOF Robot Manipulator:

       Robot manipulators are the major parts of industrial robotics. Now am working with a Pick and Place robot manipulator with 6 DOF.

Simple animation using SolidWorks

More Photos and Videos will be updated soon...
   

Acoustic Camera System

Abstract:

This project aims to build a sound controlled camera system, in which a camera placed in a room changes its focusing area according to the sound generated by an intruder. The images captured by the camera are stored in a PC for instant or future analysis. The system consists of an PIR sensor which will detect an intruder, who trespasses in to the room. The microphones placed in the different corners or points in the room will detect the sound generated by the intruder. According to the distance to the microphones from the intruder varies the intensity of the sound captured by microphones also varies. Thus by comparing the sound intensities we can identify the position of the intruder. Then the stepper motors driven by the controller will adjust the angle of camera to focus the intruder.

There is a set of IR sensors (IR LEDs and receivers) also there, which are placed in the doors and windows of the room. Whenever the optical radiations from the IR LEDs breaks, that any one enters the room, it will be detected by the sensor and the camera will be focused to that position.

The usage of both microphones and IR sensors make the system capable to identify intruders who come with and without sound, also those who come through direct and indirect paths. The GSM transceiver connected through the MAX 232 is used for communication to the authority to inform the presence of intruder.

 

Intelligent Path Finding Robot

Abstract:

The Path Finding Robot is an open loop control system. The reflecting type sensors fixed in the X and Y-axis, detects obstructions, in the path of the moving robot. When an obstruction is detected, the direction control steers the robot, in a different direction. The access control stops and start the movements. The speed of movements is also controlled, depending on the requirements.

The infrared rays reflected back by an object, in the path, is sensed by sensitive receptors. The amplified signals are then read by a powerful 8-bit microcontroller. An algorithm computes the safe direction, and steers the device, with stepper motor. Steppers are employed, for motion and direction drives. Programmed movements, as per the feedback is achieved. When an obstruction is detected in front, the robot looks left and then right, for an entry. If all the directions are blocked, it reverses with a beep, to indicate a dead block. The idea can be used to detect obstruction in underground tunnels, and determining the distance of the block from the entrance. Programmable timers, derive the timing signal for the steppers. The basic concept can be expanded for use in more complex robotic applications.

The human interface to the robot is through a wireless remote. Three push buttons are given on the remote, for forward, left and right movements. The wireless transmitter transmits ASK modulated signals over an fm carrier. The receiver section decodes this signal and gives commands to the microcontroller. An audiovisual indication of the movements and obstructions are provided, using piezo electric beeper and LEDs. Comprehensive block diagram of the system is enclosed

 

 Complete System:

 Bottom view:

 Front view:

 Wheel Alignment: