To count number of external events using LabVIEW
- 1. EXPERIMENT – 6 OBJECTIVE: To count number of external events using LabVIEW. APPARATUS USED: Arduino board, seven segment, LABVIEW setup. THEORY: Introduction to LABVIEW: LabVIEW is an integrated development environment designed specifically for engineers and scientists. Native to LabVIEW is a graphical programming language (G) that uses a dataflow model instead of sequential lines of text code, empowering you to write functional code using a visual layout that resembles your thought process. This means you spend less time worrying about semicolons and syntax and more time solving the problems that matter. Seven Segment: A seven-segment display (SSD), or seven-segment indicator, is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot matrix displays. Seven-segment displays are widely used in digital clocks, electronic meters, basic calculators, and other electronic devices that display numerical information. Pattern of display numbers: In the following table there is a sequence available which helps in coding the sequence.
- 2. Interfacing 7- Segment with Arduino: In this circuit, the pins of seven-segment display are connected to Arduino pins 2-9, as shown in the table below. Common pins (pin 3 and pin 8) are connected to GND and dp is left unconnected, because it is not used in this experiment Interface Arduino through LabVIEW: U N O
- 3. Hardware interfacing: Checks if LabVIEW sent a new value. If there is a new value, it converts it into integer byte with the same value. This integer byte represents the delay interval used in sequence. That, the greater the delay the lower the speed and vice versa. Else, Arduino continue running the motor at current speed. This prevents the processor from overloading the serial port and pushes it to avoid Arduino Serial port hanging. RESULT: Study the operation of seven segment with LabVIEW and counting a sequence.