Pulse Width Modulation DC motor control
Hi, I'm having trouble with a LabVIEW VI running a PWM output (via myDAQ) to run a 24 volt (19 watt) DC fan. Motor stalls at regular intervals (about 80 seconds); duty cycle is above 50% when it...
View ArticleFlush queue after element = Value
Hey All, I have a queue of clusters that each contain an enum and a variant. When an event occurs I want to search the queue for a specific enum+variant combo and clear the queue after that point....
View ArticleAverage majority of element of array
Dear Friends,As beginner user of lab view struggling with this problem which I can explain it by an examplemy array: 8 8 8 7 8 9 9 7 24 14I would like to calculate the average of majority of elements...
View ArticleSequential Case Structures
Dear all, I'm trying to make a VI that sequentially opens and closes 4 separate solenoid valves; each one triggered by a separate case structure. Attached is the VI I have created so far. What I'm...
View ArticleRead data from text file and display on graph
i have data saved in a text file (2 columns and 8 milion row) and i want read the data from text file and display on graph.if it possoble? and how i do ?
View ArticleRe: xy graph in GUI. Show string data related to a X,Y point
Dear all,I am using a PXI 7350 hardware to generate a PWM signal. The PXI is capable of generating this PWM signal by selecting parameters in the configuration VIs from the NI motion 73xx software....
View ArticleHow to read two ir sensor connected to arduino to find the velocity of object
I am connecting two IR sensor module to the analog pin of arduino to detect the velocity of object. IR LED and photodiode are kept in front of one another when the object passes between them voltage...
View ArticleRequired: read from spreadsheet csv of 14 columns into Waveform chart with...
Hello there. I cannot seem to plot my waveform chart into stacked plots and the chart is somehow incorrectly put. Can anyone help me with it or point out which I should change?
View ArticleHow to transform 32-bit FLOAT number to 16-bit UNSIGNED
Hi there, I am trying to write 32-bit single precision number to two 16-bit unsigned modbus regsiters. Any ideas how could that be done? thanks in advance!
View ArticlePossible to search for a config file in a folder & sub folders using Labview...
Hi there, I'm trying to create a VI that will look up a config file in a folder and also search for that file in the subfolders. Unfortunately due to corporate restrictions I am only able to use...
View ArticleRecord avi file in the loop?
Hi I would like to create an avi file each time when I want. My camera is working all the time. I would like to make avi files all the time when I want without stopping the application and starting it...
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High sampling rate, high channel count in cRIO FPGA [read and write] (how to?)
Hi,recently I started to put a project into a more orthodox way in our cRIO RT 9024 - FPGA 9112. The project is a HOST <--> RT <--> FPGA structure.Host to RT uses variables for control and...
View ArticleCalibration Executive 3.6.5
We currently have Calibration Executive 3.6.4 and would like to upgrade to 3.6.5 but am unable to find the download. Where can I find a copy?
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Acquiring three signals using DAQ ?
I have created simple program of acquiring three signals using USB-6002 DAQ. The three channels consists of one tacho pulse signal, one vibration signal in X, one vibration signal in Z.The problem I am...
View ArticleDAQmx 16.1 executable won't work with earlier daq versions
Hello, I have been using DAQmx for many years. I give my customer executables to run their software. In the past an exe built with a higher DAQmx version will work on my customer's machine with a...
View ArticleLabview Ubidots
hello, im dandi. i have trouble, i want to get 2 or more value from ubidot to labview, i have done following step from this sitehttps://ubidots.com/docs/es/libraries/labview.htmland it's work, but it's...
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RT/FPGA Generation and logging syncronization
I have a cRIO unit that controls a Servohydraulic machine (using a PID controller on the FPGA). The analog output comes from a NI-9269 and I read displacement and load from a NI-9205 connected to...
View ArticleProgram selection (LabVIEW 2012)
Hi,I have two different LabVIEW built (.exe) files and i want to make a new Front Panel to select the program without browsing it. I already tried using System Exec.VI but it only work on opening the...
View ArticleProblems Driving my Stepper Motor
Hey all, I'm having some problems driving my stepper motor. It runs clockwise at an eighth step just fine but it doesn't run counter clockwise or at any other step size. I've looked at all the...
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