Intelligent indoor air monitoring

The consciousness of clean air quality indicator is an ideal to inform user when surrounding environment having the risks of increasing toxic gas threats to public health. The level of contaminants gaseous in the air should be monitored preciously in order to achieve safety precaution.  The TGS 2600 gas sensor is applied in the project. Gas sensor is sensitivity to the level of the gaseous air contaminants. The system alarm is divided into 3 level indicators. The alerting is allowing people to evacuate when the surrounding air contaminant is over the level as well as to protect environmental safety and condition. The sensing is embedded into Arduino and program is developing by using C language to read the level of the air contaminant. The data is send over to the RF 433 module. Another receiver is embedded together with another Arduino, read the data and send over to the PC through the USB to RS232 module. The graphic user interface is designed by using the Visual Basic 6.0 it will plot the graph and display the condition of the environment. The reading the parts per million (ppm) has been figure out from 0 to100 ppm. The output voltage of the RL is calculated from 0 to 100 ppm within 5V. The voltage RL cannot more than 5V, because the Arduino only operate at the maximum of 5V. The distance of the wireless module is operating within 15m. If it is require go the longer distance it is need to change to the Xbee module.

Infrared Multi-Function Remote Appliance Controller

The project is designed by using the microcontroller to all the process sequence, A wireless keypad is designed to control the speed of the fan, turn on or turn off lighting. The electronics switches are controlled by using the NPN transistors and relay. The speed of the fan is controlled by using the different voltage when the relay is swap the input voltage at the different voltage.

The remote will be design using buttons to represent the control activities such as turn on or turn off, the speeds. The Wireless will be using the RF module which is 315MHz. many op-amp will be use compare the result. 

It will be using the C programming’s language, PIC-kits 2, simulation software, Dip-trace and other application software. The design will be fixing to the wall.

GSM base alarm system monitoring

There are have two functional in this security system. First, the system can detect unknown person when the user activated this system. PIC Microcontroller will read the data when the sensor activated. Then, the GSM get data from PIC Microcontroller to send message for user by using hand phone. To communicate between GSM modem and hand phone, AT Command is a basic command need to be study and learning. It is important to apply this project. Because of that, the GSM modem just only understands AT Command declaration. From this, it can communicate with hand phone, computer and PIC board. To accomplish for this project, the entire component must be work effectively based on objective. The GSM as a medium to receive the message from PIC microcontroller is the same application with hand phone. Programming C is used for PIC board application to develop program and system optimization. In the simple application, this security system can be used for our life whether in the house, office or residential area

Design and Implementation of a DC Motor Controller using Fuzzy Logic

Direct current (DC) motors speed changes when the load is varied in the process as the motor runs. In most cases the speed is assigned to the motor controller by the operator to make that motor to run at that certain speed. When the load that the motor is pulling increases, the speed decreases and when the load decreases, the speed increases. This normal happens in conveyor belts, escalators, lifts, electric trains, electric vehicles, cranes, robotic manipulators and many others. This brings concern to Engineers thus making them to implement motor controllers that will be able to solve such problems to achieve constant motor speed.

SMART AUTOMATED POWER SAVING LIGHTING

Lighting is a very important aspect in life. It is necessary to always have an effective supply of electricity to provide sufficient power in our homes, schools and even working places for our appliances and even to provide light. It is also important to save a lot of energy (electricity), save costs and even save the earth. By saving energy people can always switch off lights and other appliances when they are not in use. Most times people waste a lot of electricity by leaving the lights and appliances on after they use them. This project focuses on designing a system that is automated to help prevent wastage of electricity and help save costs, anywhere.

Automated PCB board etching system

The aim of this project is to develop an Automated PCB board etching system. One way of removing the unwanted copper is use a Computer controlled milling machine which is the process fairly quick. However, chemical process method still widely using in order to produces PCB and has facing problems where slower etching can cause undercutting where copper is removed from under edge of the resist areas as well narrowing the copper tracks and pads. In addition, weakening their attachment on the substrate and cause problems that cannot produces fine and closely tracks. Since all these, the Auto PCB etching machine combine with PIC, bubble etching and mechanism methodology is produced. The platform designed consists of a base with treaded travel mechanism applied on Y axis. Dc motor applied on the axis to transfer the PCB through the system with special PCB holder. The bubbles etching system have a feature such as controlled temperature and draining system. The sequence of the process and temperature is controlled by PIC which adopted Mikro C compiler as programming medium. In addition, Users are able to select particular section of the process by keypad. Each section of the etching process and temperature will display on LCD display. For the purpose of display, the prototype system is demo under few seconds for each process. A study had been found that a proper etching process start with photo resist etching process with take five minutes. After that, go to water washing process with two minutes and finally etching process take 15 minutes.