In this project, a smart socket is designed which can be automatically switched using a relay. The socket is interfaced to a Particle Photon based IoT device which keeps track of energy consumption using ACS 712 Current sensor and help automatically disconnect socket connection with the Mains when the power consumption by a device exceeds a threshold value. The Photon also remains connected to a web server via Wi-Fi hotspot and keeps updating the energy consumption data to the server.
Presently, I am thinking of changing something depending on my attention and meditation level, say the brightness of a small LED. We will be controlling the brightness of an LED using the attention and meditation levels of our Brain at any particular time. We will be using Arduino UNO and mindflex sensor which we have chosen to read the brain wave and an LED to show the results. We are changing the brightness of the LED which can be easily controlled using PWM technique.
Till now we have seen the working of the EEG chip and we are also aware of our sensor. So now it is the time to do some experiments and gain some practical knowledge on brain waves.In this first experiment, we will try to hack the EEG signals. For this, we need to make some arrangements so that we can easily measure the signals.
Solar energy is rapidly gaining notoriety as an important means of expanding renewable energy resources. As such, it is vital that those in engineering fields understand the technologies associated with this area. Our project will include the design and construction of a microcontroller-based solar panel tracking system. Solar tracking allows more energy to be produced because the solar array is able to remain aligned to the sun. This system builds upon topics learned in this course. A working system will ultimately be demonstrated to validate the design. Problems and possible improvements will also be presented. The unique feature of this solar tracking system is that instead of taking the earth as its reference, it takes the sun as a guiding source. Its active sensors constantly monitor the sunlight and rotate the panel towards the direction where the intensity of sunlight is maximum.
Most of the times, measurement in electronic circuits, our requirement is measuring DC voltage. Normally, we will set the multi-meter to DC voltage mode and check the voltage levels at various points on the PCB. Mostly, our requirement lies between 5V to 15V DC. The circuit shown is simple, occupies less space and can directly connect to the DC voltage for measurement. To minimize the size and power consumption, 8 pin MCU and 0.96” OLED is used in the circuit.
Universal Asynchronous Receiver/Transmitter (UART) is the most common point to point (peer) serial communication interface used in microcontrollers. It is a simple two-wire interface that requires no clock signal or any master device for serial transmission of data between two embedded devices. It can transmit data packets of variable length (5 to 9 bits) with the provision of a parity bit for error detection. That is why almost all microcontrollers have USART or at least UART peripheral built-in.
The first thing we need to understand is that what it servomechanism? Servomechanism means generating error output as a difference between output feedback and control input and reduces this error until it becomes zero – that means when the system reaches desired state when the system produces desired output.
Usually, the households have post paid electricity connections. On the consumer side, post paid connections have drawback that the consumption of electricity is not tracked by the consumers and many times they are shocked, when they receive high bills. The cause of getting high bills is usually not the high electricity rates but is the unconscious overuse of electricity. Prepaid electricity connections are usually suggested as the viable solution to this problem. In a prepaid electricity connection, consumer would need to recharge the amount of electricity they want to consume.In such a system, the household electricity meters need to be equipped with a system that could be acknowledged of the amount recharged by the consumer and could count down the electricity consumption from the recharged amount to zero. Once the meter reaches zero, the main supply would be automatically cut off and could be resumed only after the next recharge.
Beaglebone Black aka BBB is a low cost open source development board mainly used by developers and lobbyists. Although it’s quite similar to a Raspberry Pi yet it comes with some additional features. Developed by a non-profit corporation beagleboard.org, this credit card sized board also supports embedded Linux platform. Due to the presence of so many advanced peripherals, it is also considered to be a minicomputer.BBB consists of core architecture of ARM family and houses AM35X ARM cortex A8 (1GHz) processor. It can be powered either through a micro USB port or an external 5V supply that is present as an optional arrangement.
Augmented Reality and Mixed Reality are the future of human interaction with the real world. Augmented Reality is a technology that allows projecting live images, videos or media in the real-world environment along with the real objects visible through a camera or holographic wearable. The technology allows interacting with the real world environment while manipulating it through computer-generated graphical elements and virtual interfaces. It is a way of modifying the view of real world environment by a computer. In this project, Augmented Reality is used to monitor the sensor data supplied through an IOT board. The IOT board used in the project is Particle Photon.
Gardening is one of the common hobbies. It keeps you close to nature. It is healthiest hobby that anyone can have. Though, plants and trees are like pets. They need continuous care without break. One needs to be with them all time. This is not always possible. One may have to go for vacations or business trips or travel for other reasons. At such times, the garden may remain unattended for some time or even could be left unattended for a long period of time.
Vehicle is part of our busy life but if we are in office or in house then we need to park vehicle outside or in parking lot. There is prone to theft or hit by other vehicle. The situation of vehicle can’t be track without visiting parking place. So this project is built to track status of vehicle, when somebody try to steal the vehicle or get hit by any others vehicle.
The project built on two boards one is for transmission which named as PARKING VEHICLE MONITOR-TX and other is for receiving which named as PARKING VEHICLE MONITOR-RX. The TX board is used to transmit the status of vehicle and other RX board is used to receive the status of vehicle and display the status on 16×2 LCD display.
Automation applications generally require controlling multiple actuators (like many motors) at the same time. For concurrent and synchronous controlling of many actuators, they need to be controlled and operated independently. Engineers use as many controllers (microcontrollers or ASICs) as the number of actuators needs to be independently operated.
Sequence timer is used in many manufacturing industries to turn ON and turn OFF processes one by one automatically. Sequence timer is at most required when there is chain of processes – means 1st process ends it triggers 2nd process, when 2nd ends it triggers 3rd process and so on (like chain reaction !!!….). The timings and durations of each process has to be set initially. Each process requires specific time duration. The time duration for each process in sequence is set (programmed) before the entire chain process starts. Then the 1st process is triggered. It runs for set duration and when it finishes, 2nd process starts and thus the chain starts. Each process runs for set duration and when it finishes, turns ON next process.
While measuring voltage and current with multi-meter, the probes have to be changed its position carefully. There is a probability of damaging the multi-meter, if voltage is measured in high current mode by mistake. In case, both voltage and current to be measured at a time, we have to use two multi-meters and care should be taken while wiring both the multi-meters. VAT meter is combination of Voltmeter, Ammeter and Thermometer. It can measure voltage and current simultaneously along with the temperature.
Fasted Finger First is an important circuit which is commonly used in quizzes, games and other multi-player activities. In quiz events, the circuit is generally used in Fasted Finger First is an important circuit which is commonly used in quizzes, games and other multi-player activities. In quiz events, the circuit is generally used in rapid fire rounds where it has to be determined that which participant has first responded to the question. It is necessary to use such circuit in a quiz as many times, there is a minor difference between the responses of participants.
This is a project based on Arduino board which can measure the unknown capacitance value. When the capacitor whose value needs to be measured is plugged into the breadboard of the Capacitance meter, the 16*2 LCD displays the capacitance value. The project uses an Arduino pro mini boardwhose ADC feature is used along with the concept of RC charging circuit to develop this Capacitance meter.
There are many devices for visually impaired people. This project is also an attempt to develop an aid for visually impaired persons. This project is a smart stick which is capable of detecting any obstacle, detect water and corners and even allow the user to find the stick if anyhow missed by the user by pressing a remote switch.The device is designed with an intention to sort out common issues faced by the blind people while using traditional sticks. With the electronics embedded within the stick, it became a smart stick with the functionalities mentioned above. The smart stick is built on Arduino Pro Mini. This Arduino board is small enough to install on a regular stick and has buzzer, LDR sensor, Ultrasonic sensor and a water detector sensor interfaced to it.
In the previous tutorial, features, advantages and limitations of TCP/IP Protocol were discussed. Though, TCP/IP is not best suited for IoT applications due to packet overheads, still being the most common protocol stack on internet, it offer ubiquitous connectivity. An IoT device can be made to communicate with a cloud or server using TCP/IP protocol without any hassle of network programming and network administration. In this project, an IoT device will be designed that could transmit sensor data to ThingSpeak Platform using the TCP/IP protocol.
In this modern world we all are aware about USB. We all connect our Pen drives, memory card and other devices using USB. But have you ever thought what is it? Here is the answer; USB is a communication protocol by which two devices communicate with each other. In the same way, microcontroller also communicates with other devices like sensors or PC by using different communication protocols like USB, UART, and I2C.UART stands for Universal Asynchronous Receiver/Transmitter. It is a type of serial communication that uses two wires, one for transmission (Tx) and one for reception (Rx).