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What kind of things can be done with a LabJack?

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Read the output of sensors which measure voltage, current, power, temperature, humidity, wind speed, force, pressure, strain, acceleration, RPM, light intensity, sound intensity, gas concentration, position, and many more. A LabJack brings this data into a PC where it can be stored and processed as desired.

Control things like motors, lights, solenoids, relays, valves, and more.

Comments

#1

Submitted by Anonymous (not verified) on Tue, 2012-05-15 23:14.

Hi

I m new to labjack and I have to write protocols for using light meter,labjack U6 for controlling light intensity etc on pc for display on a screen.

Anyone please help me how to proceed

thanks

#2

Submitted by LabJack Support on Wed, 2012-05-16 11:39.

So the U6 will measure the signal from some light sensor, and then your software will perhaps use Windows API calls to adjust the brightness of the monitor?  The latter is not related to LabJack.  For the former, start a forum topic with a link to details about your light sensor.

#3

Submitted by Lugo (not verified) on Mon, 2011-12-26 21:58.

hi

 

im new using labjack, i have have labjack u12, and i have to do a project, that is turn on and off a three-phase motor, and take current and voltage samples. I hope someone can help me.

 

thanks a lot.

#4

Submitted by LabJack Support on Tue, 2011-12-27 11:46.

That is not a trivial task.  I suggest you start by reading some forum topics:

http://forums.labjack.com/index.php?showtopic=4263

http://forums.labjack.com/index.php?showtopic=4630

http://forums.labjack.com/index.php?showtopic=4856

http://forums.labjack.com/index.php?showtopic=5519

Then you want to work on what you are going to use to turn the motor on/off (3-phase relay or some sort of motor controller?) and selecting voltage and current sensors.  To get into more detail, post on the forums.

#5

Submitted by Ofer (not verified) on Wed, 2011-11-30 14:41.

Hello,
Sorry for the amature question..
I am building a small system that would read analog signal from two potentiometers (1-5 v- can be changed..), compare the difference between them and as a result provide current to power a motor (6v).
I need 15 individual systems such as that controlled in parallel.
I don't need high speed acquisition, 20 hz are fine.
Are your controllers good for my project. If so, please recommend the right one.
Thanks, Ofer

#6

Submitted by LabJack Support on Wed, 2011-11-30 16:02.

Reading a couple pots is pretty straightforward.  A U3-HV is probably what you should look at.  As for controlling the motor, unless the motor is very small you need something between the U3 and the motor.  Perhaps you use a PWM output timer on the U3 to control the duty cycle of some sort of switch (transister, SSR, etc.), or perhaps you use an analog output on the U3 to control a motor controller or motor driver.  Try searching at labjack.comhttp://labjack.com/search using the term "motor control", and beyond that to get into more detail I suggest posting on our forum.

#7

Submitted by Anonymous (not verified) on Wed, 2011-07-20 14:15.

any plans to port python 2x modules to python 3x anytime soon? 

#8

Submitted by LabJack Support on Wed, 2011-07-20 15:29.

There are no plans to port LabJackPython to Python 3.x.  We are currently developing a multi-platform Modbus driver, and have not decided what Python versions we will support in that interface.

#9

Submitted by Acoustic Man (not verified) on Mon, 2011-05-09 13:29.

Is anyone using this interface to conduct measurements with a class microphone using a interface similar to SpectraPlus DT?

#10

Submitted by LabJack Support on Mon, 2011-05-09 14:24.

I searched around and did not find any other mention of SpectraPlus software.  If the software has an open API that lets you call functions from a Windows DLL then you should be able to talk to a LabJack yourself, otherwise PHS would have to add the support.

#11

Submitted by Benz (not verified) on Thu, 2010-10-28 18:05.

What is the smallest Hz LabJack can detect ? I am interested in .5-30 Hz range.

#12

Submitted by LabJack Support on Fri, 2010-10-29 09:58.

Here is a good forum topic about frequency measurement:

http://forums.labjack.com/index.php?showtopic=1105

You are probably going to want the U3 or U6, and you will probably use a timer in 32-bit period measurement mode.  There is really no minimum Hz limit.  If the signal was too slow, you could always switch to software timing to go as long as you want.  The 32-bit period measurement mode will certainly work for your 0.5 - 30 Hz range.