Normally, it is used for measuring the speed of a rotating shaft. The number of revolutions per minute rpm is valuable information for understanding any rotational system. This easy-to-make photoelectric tachometer measures the rpm of most shop-floor tools and many household machines without any mechanical or electrical interface.
This project is available at: Microcontroller-Based Tachometer. Various sensors are used to measure physical quantities in analogue form like pressure and temperature. This article demonstrates the principle and operation of interfacing the humidity sensor with microcontroller AT89C A humidity sensor is widely used in applications like weather forecast, air conditioner, Hygrometers etc. This project is available at: Interfacing humidity sensor.
Sign in Join. Sign in. Create an account. Privacy Policy. Sign up. Password recovery. Wednesday, January 12, Forgot your password? Get help. Electronics For You. This project is available at: Interface GSM Module Arduino Based GSM Home Security System This project is designed using normally-closed reed switches connected to doors and windows and additional passive infrared PIR motion sensors to detect movement of a burglar or an unwanted intruder in your home.
This project is available at: Electronic Card Lock Morse code encoder Morse code is a method of transmitting textual information as a series of on-off tones, lights or clicks. This project is available at: Morse code encoder Smart Receptionist With Smartlock System Presented here is a security system that lets you see a visitor whileyour main office door is locked.
This project is available at: Virtual Telepresence Robot Using Raspberry Pi Soccer Robot This soccer robot can move forward, reverse, forward-left, forward-right, reverse-left and reverse-right with the help of an Android phone.
This project is available at: Soccer Robot Microcontroller Projects: Smart Living Restaurant menu ordering system In these modern days, the number of restaurants are increasing.
This project is available at: Restaurant menu ordering system Fridge Temperature and Humidity Indicator We can measure temperature and humidity inside the fridge using a normal temperature-humidity indicator but relative humidity RH could be inaccurate in that case. This project is available at: Fridge Temperature and Humidity Indicator Home Automation System We are surrounded by smart devices capable of making decisions with minimal human intervention.
But it is also possible to change the CG RAM for characters that are already on the screen, and their appearance will change This project is available at: Display Custom Animations Auto Intensity Control of Street Lights Street lights are controlled manually in olden days.
This project is available at: Auto Intensity Control of Street Lights Microcontroller Projects: Miscellaneous Odometer This next project describes how to build a digital speedometer-cum-odometer for your motorbike. This project is available at: Odometer Microcontroller-Based Tachometer A tachometer is nothing but a simple electronic digital transducer. This project is available at: Microcontroller-Based Tachometer Interfacing Humidity Sensor Various sensors are used to measure physical quantities in analogue form like pressure and temperature.
It is an effective system that ensures multiple functions in a single car. This system automatically checks the following aspects: whether the person is drunk or not, seat belt insertion, and vehicle driving with the use of sensors. If this prototype detects the drunken people by alcohol sensor or improper seat belt insertion by the sensor, then it automatically stops the vehicle with the help of the DC Motor interfaced with the microcontroller by using relays to perform the operation.
From the past two decades, vehicle thefts have been increasing rapidly and in the year , the United States of America has reported that nearly millions of cars are stolen. There are many technologies implemented to reduce these vehicle thefts. Thus, this project is designed to develop an embedded system , which starts the vehicle by recognizing the face through the camera. This proposed system uses an advanced ARM processor to provide the security for smart cars from thefts or robberies.
The system works on the principle of component analysis- a linear discriminate analysis algorithm which recognizes the face of the driver who starts the car. The ARM processor is programmed in such a way that if the corresponding result is authentic then it generates a signal to run the stepper motor in order to start the car automatically.
If the result is not authentic then it produces an interrupt signal to stop the car engine and informs the car owner that unauthorized access with the help of GSM via SMS. In many rural and urban areas, water scarcity is the major problem, and wastage of water during supplying is treated as a major culprit. This project provides a solution to operate water pumps or motors for the required time duration.
Many times we forget to turn OFF the water pump or system after the prescribed time, this might lead to pour out of the water from the tanks. This proposed system uses two power supplies , one is a 3.
Here four switches are interfaced with the ARM processor for giving input time slots. The ARM processor is programmed in such that for every switch pressing it enables the output for driving the transistor circuit with a certain time period. This transistor circuit further drives the pump through the relay. The 16X2 LCD is interfaced to the processor for displaying the time duration and also to indicate the status of the water pump.
Solar street lights were mainly used in remote areas, where electricity supply is not always available. Nowadays solar technology has been progressing in both home and industrial applications. The solar street light system is used to convert the sunlight into electricity by using solar panels in order to power up the street lights. For conserving the electrical power, here an auto-intensity control of an LED-based-street light system is implemented that works on solar energy.
This project uses a solar panel to charge the battery whereas the charge controller circuit controls the charging of the battery. A programmed ARM-Cortex microcontroller unit is engaged to provide different intensities at different times of night by using the PWM technique. The charge controller circuit is used for protecting the battery from the following conditions: overload and deep-discharge.
This application is very helpful for the industries. For any application in the industries, there are many parameters to be handled. This application is used to save the power and major components in the industry based on sensors. The temperature sensor is fixed at a specified location, for our application to be performed. The sensor gets the values and sends the information to the microcontroller continuously. The microcontroller receives the values and sends the corresponding values to an LCD display.
Whenever the temperature exceeds the set point the controller drives the fan ON and if the set point declines its drives the fan OFF. Whenever the light exceeds the setpoint, the controller drives the light ON. If the setpoint decreases its drives then the light will be turned OFF. GSM modem first makes a call and then sends the message.
This application is for industries with heavy parameters to handle. Now a day these are used in all kinds of industries and commercial complexes. The list of ARM based projects for electrical and electronic engineering students include the following.
Traffic Controller using Microprocessor. The main aim of this project is to design a Traffic light controller using microprocessor. The Microprocessor is a popular Microprocessor used in Industries for various applications. Such as traffic light control, temperature control, stepper motor control, etc. In this project, the traffic lights are interfaced to Microprocessor system through buffer and ports of programmable peripheral Interface The Interface board has been designed to work with parallel port of Microprocessor system.
This can be used in military applications for searching the terrorists. Design of inspection and cleaning robot : Inspection and cleaning processes in electrical power plants are tedious and time consuming tasks. For this purpose a cleaning robot was developed.
This robot is guided wirelessly. Autonomous Mobile Platform for Intelligent Control of Robot : Here an autonomous robot for security purpose is proposed here. This robot can monitor the presence of unauthorized people in the secured zone. This can also detect the presence of explosives in the areas where human cannot go. A camera is attached to the robot, so that it can provide the continuous monitoring of the surrounding area.
GPS navigates the robot and RF technology enables the reception of the detection signals. The whole circuit is controlled by an ARM microcontroller. Implementation of Accelerometer based Robot motion and Speed control with Obstacle detection : This project is implemented to design a spy robot with wireless camera attached to it using ARM controller.
The proposed design remotely controls the robot motion by Zigbee module. Automation in agriculture field using arm 7 based robot : A smart robot that is used in agriculture is designed here. This robot waters the plants automatically. Amount of water given depends on soil moisture. A moisture sensor is used to measure the moisture in the soil.
Working algorithm is explained here. Object sorting is mostly used in industries. Here color of the object is identified using image processing. A camera placed on the robot captures the image of the robot and processes it IEEE Smart parking using wireless sensor networks : This paper shows a smart parking system.
This system can reduce the time required for searching the free parking place.
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