Nice introductory HubPage on LabVIEW and Arduino.
The Arduino is perfect pocket-sized i/o device to use with LabVIEW.
The Arduino is perfect pocket-sized i/o device to use with LabVIEW.
Sunday, 23 December 2012
Here was one of those tricking CLAD questions that I've never come across until I was taking the test.
The question was like this example:
If this vi was run, what would the output be?
At first glance it looks easy. With the selector terminal input being 'clad' and the case selector label being Clad, it should run the one button dialog box and print "This
is Clad". But look again. The string input to the case structure is
lowercase "clad". Yes the case structure IS CASE SENSITIVE.
When I hit run on this vi, it doesn't recognize the "clad" and runs the
default case instead.
Here is what it looks like when I correct the lower case string input.
By correcting the string input to "Clad", it now matches the wording and case of the case structure and runs the "Clad" case which gives the one button dialog box output of "This is Clad".
Yes, the case structure IS case sensitive. Try it before you take the CLAD test.
The question was like this example:
At first glance it looks easy. With the selector terminal input being 'clad' and the case selector label being Clad, it should run the one button dialog box and print "This
is Clad". But look again. The string input to the case structure is
lowercase "clad". Yes the case structure IS CASE SENSITIVE.
When I hit run on this vi, it doesn't recognize the "clad" and runs the
default case instead.
Here is what it looks like when I correct the lower case string input.
By correcting the string input to "Clad", it now matches the wording and case of the case structure and runs the "Clad" case which gives the one button dialog box output of "This is Clad".
Yes, the case structure IS case sensitive. Try it before you take the CLAD test.
Thursday, 20 December 2012
Sunday, 9 December 2012
I just received a wonderful device that defies logic. I now have a Kindle Keyboard 3G, Free 3G + Wi-Fi, 6" E Ink Display - includes Special Offers & Sponsored Screensavers
The reason it defies logic is because it has FREE 3G. Who provides FREE 3G these days? That's unheard of...
This Kindle Keyboard is so awesome. Sure it's black and white and a little slow, but did I mention it has a web browser and FREE 3G. That means I can check email anywhere without paying for the airtime. I can check my Yahoo and Gmail. I can read TheDrudgereport.com, Wikipedia, update my Facebook and Twitter and anything in real time from anywhere without a charge. This just blows my mind. Here is a pic of this website on the Kindle Keyboard..
The reason it defies logic is because it has FREE 3G. Who provides FREE 3G these days? That's unheard of... This Kindle Keyboard is so awesome. Sure it's black and white and a little slow, but did I mention it has a web browser and FREE 3G. That means I can check email anywhere without paying for the airtime. I can check my Yahoo and Gmail. I can read TheDrudgereport.com, Wikipedia, update my Facebook and Twitter and anything in real time from anywhere without a charge. This just blows my mind. Here is a pic of this website on the Kindle Keyboard..
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| Kindle Keyboard |
Friday, 7 December 2012
I just passed the CLAD LabVIEW certification exam. It was a bit tricky. I studied everything I could find.
In my opinion, the test consisted of half of the standard questions you find on the online practice exams. The other 50% I have never seen before except for in the Core 1,2, and 3 classroom exercises.
It was 40 multiple choice questions. I finished in less than 30 minutes and used the rest of the time to review my answers.
My advice to anyone taking this test is to study the practice exams, but also methodically go through all the exercises of the Core 1 through 3 classes. If I would have reviewed those examples in the classroom exercise book, it would have greatly improved my final score.
For those who have not taken Core 1 through 3, I'll try to give a few examples in the next few weeks.
Stay tuned.
In my opinion, the test consisted of half of the standard questions you find on the online practice exams. The other 50% I have never seen before except for in the Core 1,2, and 3 classroom exercises.
It was 40 multiple choice questions. I finished in less than 30 minutes and used the rest of the time to review my answers.
My advice to anyone taking this test is to study the practice exams, but also methodically go through all the exercises of the Core 1 through 3 classes. If I would have reviewed those examples in the classroom exercise book, it would have greatly improved my final score.
For those who have not taken Core 1 through 3, I'll try to give a few examples in the next few weeks.
Stay tuned.
Saturday, 6 October 2012
Just like a programmer starts off printing "HELLO WORLD" on the screen, in LabVIEW you can start off by learning to count to three. It's not easy or intuitive to find a way to count between two numbers. The key words are "Quotient & Remainder." On the Block Diagram hit CTRL and then SPACEBAR at the same time to pull up the Quick Drop dialog box. Type in Quotient & Remainder. It should find it by just typing in Quo....
Now add a While Loop around the Quotient & Remainder.
We will use the iteration (i) terminal from the while loop to show the current loop count. The iteration terminal starts with zero on the first sequence. We connect a wire from the iteration (i) terminal to the X input of the Quotient& Remainder.
We need to add an upper limit number to the Y input of the Quotient & Remainder. So Right-Click your mouse over the Y input and Create a Constant. We want this vi to count from 0 to 3. Put a 4 in the constant box. The output will count from 0 to 3 because the first count will be the zero and the fourth count will be the number 3.
Right-click on the upper right output connector of the Quotient & Remainder and create an Indicator. This numeric indicator will be shown on the Front Panel. This is where the numbers will be seen. If you want to use this number for another operation, just add a wire and connect to another vi, or a graph, etc.
You will need to add a Stop button to the front panel for this example and wire it to the Stop if True function of the While Loop at the lower right hand corner. Let's also slow it down a little so we can see the operation working. Add a Wait Until Next ms Multiple icon with 500 as a constant wait time.
Hit run and watch the numeric indicator count from 0 to 3 on the Front Panel. Hit the Stop button to end the process.
Thanks for learning how to Count To Three using LabVIEW with me. Feel free to leave a comment.
We will use the iteration (i) terminal from the while loop to show the current loop count. The iteration terminal starts with zero on the first sequence. We connect a wire from the iteration (i) terminal to the X input of the Quotient& Remainder.
We need to add an upper limit number to the Y input of the Quotient & Remainder. So Right-Click your mouse over the Y input and Create a Constant. We want this vi to count from 0 to 3. Put a 4 in the constant box. The output will count from 0 to 3 because the first count will be the zero and the fourth count will be the number 3.
Right-click on the upper right output connector of the Quotient & Remainder and create an Indicator. This numeric indicator will be shown on the Front Panel. This is where the numbers will be seen. If you want to use this number for another operation, just add a wire and connect to another vi, or a graph, etc.
You will need to add a Stop button to the front panel for this example and wire it to the Stop if True function of the While Loop at the lower right hand corner. Let's also slow it down a little so we can see the operation working. Add a Wait Until Next ms Multiple icon with 500 as a constant wait time.
Thanks for learning how to Count To Three using LabVIEW with me. Feel free to leave a comment.
Tuesday, 2 October 2012
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