LabJack | Measurement & Automation

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Developments in LabJack software

We are continually making improvements to our software and libraries - here are some highlights from the last few months:

LJM Library

Digit with replaceable CR1632 battery!

The popular Digit-(TL/THL) series loggers now has a replaceable CR1632 battery! Another key improvement is the addition of a clear plastic enclosure so that light readings can operate while inside. If customers prefer the rugged aluminum enclosure, it can be purchased as an add-on item. See the Digit-TL/TLH product page for more information.

1 Year in the pond - Digit-TL reliability test

When we first started selling Digit-TL devices, we decided to stow one outside under a rock, and another in the pond to see how they'd hold up. After 6 months we downloaded the results to verify operation, and everything looked good, so we threw them back out. Now, after a full year, they're still going strong. See the data and photos below.

Each day is a small spike, and the yearly trend is shown by the overall shape of the graph. The two curves on the graph demonstrate how the water acts as a thermal buffer by regulating fluctuations in daily temperature.  If you look carefully, you can tell when there is snow covering the Digit-TL on land, because the temperature fluctuation is minimal (like the Digit-TL in the water).

Bobcat & Tube

Great video filmed Sunday morning outside the kitchen of a LabJacker's house ... just about a mile from the LabJack office in Lakewood, CO.

A rabbit has been living in this tube (drain pipe) for the last couple weeks.  Sunday morning our local bobcat found it and spent a full hour trying to get at the rabbit before he finally gave up.

Custom PC Water Cooling

"Performance of the computer is somewhat secondary to the performance of my cooling system."

This Goliath PC cooling setup runs on a complex network of piping, refrigeration, water tanks, and wiring.  The chiller and chiller tank pumps are controlled by hand and the rest is controlled with the U3-LV's and DaqFactory.  It was designed and built by a customer in Ontario, Canada.  Expand the post for more information on the setup, and details on how it was built.


Digit-TL is now available

Have an urge to measure the temperature in your refrigerator, attic, or car?  The Digit-TL might be just what you need.  LabJack is proud to announce the arrival of a new family of data loggers, the Digit Series.  

Holiday TurDuckEn!

It's a Chicken inside of a Duck, inside of a Turkey! In terms of LabJack projects, this goes a bit off the beaten path.  One of our employees demonstrates his skills as a chef while also testing out a prototype of our new Digit series logging device.  Inspired by J. Kenji Lopez-Alt, from The Food Lab at Serious Eats.  The Food Lab is an intersection of science and food.  A great source for geeks who like to cook!


Treadmill Desk

My work time is almost all at the computer.  I've noticed that if I spend all day sitting and working at a computer, I wind up feeling lethargic with strange aches and pains.  Not only am I not making any fitness progress, but I actually feel like sitting is causing damage.

After hearing many experts say that sitting for a long time is bad, I decided I should look at a stand-up desk.  As I researched the stand-up desk, I came across information about treadmill desks, and decided that was even more interesting.  If I wound up not liking walking while computing, I could always just stand at the treadmill desk.

Well, it turns out that walking is way better than standing.  When I stand and compute for long I find that I slouch, lean on things, and generally think about the fact that I am standing.  When I walk and compute I forget I am walking.  My body is busy and walking keeps it in a good posture without thinking about it.

I generally walk at 2.0 mph.  I have no problem with typing, programming, and other computer stuff.  Even the fairly intensive mouse operations of LabVIEW programming are no problem.  It is difficult to write on a piece of paper on the desk while walking, but I don't do much of that.

Things slow down a bit at LabJack around Christmas, so I took the time then to research and build my treadmill desk.  I looked at $1500 motorized desks that move up and down, a $550 TrekDesk treadmill desk from Amazon, and various homemade options at  The motorized desk was too expensive and still needed something to get a monitor up at the proper height.  The TrekDesk had some reviews saying it wiggled and still needed something to get a monitor up at the proper height.  Once I saw some of the things people had done at, I realized the key was separating the base from the rest of the treadmill, and building a setup with that in mind.  I wound up using cheap and simple track shelving from Home Depot.  It is very sturdy and lets me put everything at the perfect height.


I bought a 1 year old ...

LabJack and the new Raspberry Pi

The Raspberry Pi is a single board computer developed in the UK by the Raspberry Pi Foundation with the intention of stimulating the teaching of basic computer science in schools.  The board packs a lot of features, including 700 MHz processor, VideoCore IV GPU and 256 MB of RAM, and only costs $25 USD.  

So can it run a LabJack? Absolutely! In a recent forum post an enterprising customer connected a Raspberry Pi to a LabJack U3-HV, and got a simple Python script running.