This circuit can count number of persons entering a premise or number of objects passing in front of an IR sensor. The code works very nicely and fully tested in our lab. Note that a buzzer for short beeps is connected at pin-2 and the IR sensor is connected at pin-5. The delay in second "if" conditional statement is used to avoid accidental triggering of the sensor.
The most intersting thing in this code uses the default "running" keyword of Arduino. It is a library function in Arduino, also known as boolean variable.
This is a very interesting project, which you will love to construct using 8 LEDs and Arduino UNO development board. Burn the following code into your Arduino UNO development board and construct the circuit on breadboard as show in following Fritzing drawing. Then connect power to the circuit to see beautiful decorative effects of LEDs.
The project of Intelligent 3-Phase Indicator for Industrial Applications explained here is very useful to avoid false alarms during single or dual or even all phase supply failure. When this project is installed in industries it is observed that the production rate increases by 30%, due to real time monitoring of 3-phase supply.
With this system we can detect the fastest finger first action in a quiz competition conducted in schools & colleges. For this project you require following components.
This is a very useful project for securing the premises of a sensitive area. It is Arduino Security System cum Door Bell using Piezo Sensor. The list of components is given below. First make all the components available with you and then start working on the project.
To work on this project, just connect Arduino UNO with data cable to your PC or laptop. Then upload the given program in it. Press Ctrl-Shift-M to open Serial Monitor window. Enter two numbers with required mathematical operator, and press Enter.
Blood typing is a method to tell what type of blood you have. Sanguinoscope helps you find the combination of blood groups. Blood typing is done so you can safely donate your blood or receive a blood transfusion.
