Graph data coming from an ADXL345 Accelerometer in LabView

[JersonJose]

Hi,

I have an ADXL345 Accelerometer. I want to graph data in LabView. How do I do that?

I already  installed the Arduino Interface in my LabView. I've fixed my NI-VISA. My only problem is I do not know the proper wiring of the blocks as this is not just a simple AnalogRead.

[mikeporter]

It sounds like you could use going through the tutorials.

Can you read in the data?

Mike...

[JersonJose]

Hi, what tutorial should I be looking at?

What do you mean by "read in the data?"

that's the snippet I followed but that's not complete. Honestly, I do not know if that's going to work. Don't mind the Waveform Graph.

[JersonJose]

BTW, I am using this code:

https://gist.github.com/e-Gizmo/7818304

[GerdW]

Hi Jose,

it seems you send the measurement data from Arduino to serial port.

Just connect the Arduino to your PC and read the data from (PCs) serial port using VISA functions. Use the "Basic serial read and write" example VI as a starting point in LabVIEW!

[Sam_Sharp]

I think he is referring to some basic LabVIEW tutorials. There are many free training resources which are linked to under 'looking for free training' on this page.

The screenshot you posted was way too small to see what you are doing. Post a larger screenshot or upload your VI so we can open it.

You will probably need to modify your Arduino code to output the accelerometer data over serial and then use NI-VISA to read the data in LabVIEW, decode the string containing your accelerometer values and then write them to a waveform chart.

If you really want to use the Arduino interface - 

http://digital.ni.com/public.nsf/allkb/872C9DBFAB5F805C86257885005D2AC3

https://www.labviewmakerhub.com/doku.php?id=learn:tutorials:libraries:linx:misc:adding_custom_comman...

[JersonJose]

Hi, I forgot to mention that I changed something on the code that I posted.

Instead of:

const byte  spiclk=17;    // connect to ADXL CLK
const byte  spimiso=16;  // connect to ADXL DO
const byte spimosi=15;  // connect to ADXL DI
const byte spics=14;    // connect to ADXL CS

I change the pin assignment to anaog.

const byte  spiclk=A0;    // connect to ADXL CLK
const byte  spimiso=A1;  // connect to ADXL DO
const byte spimosi=A2;  // connect to ADXL DI
const byte spics=A3;    // connect to ADXL CS

I don't know if this means something aside from the pin assignment. I just thought that you need to know.

Thanks for all your replies. I will try what you suggest GerdW. Sam_Sharp, I will read them. Thanks! 🙂