Pages: [1]   Go Down
Author Topic: AnalogRead input from LabVIEW/DAQ  (Read 1229 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 1
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi all,

I am generating a DC signal in LabVIEW and inputting it into an analog input pin on my Arduino. I am using AnalogRead, reading 1 value every 100 ms. The values that Arduino is receiving (when converted back to volts) are not consistent with the signal that I am outputting from LabVIEW. Thus far, it is difficult to tell where the problem is (Arduino or LabVIEW). Is there something obvious I am missing? Has anyone tried this type of setup before?

Thanks in advance!
Logged

0
Offline Offline
Shannon Member
****
Karma: 207
Posts: 12194
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

We need more information about the hardware setup.
Logged

[ I won't respond to messages, use the forum please ]

0
Offline Offline
Faraday Member
**
Karma: 16
Posts: 2855
ruggedcircuits.com
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Have you established a common ground connection between the two systems?

--
The Rugged Motor Driver: two H-bridges, more power than an L298, fully protected
Logged

0
Offline Offline
Jr. Member
**
Karma: 4
Posts: 65
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Electrical noise would be a classic cause of problems like this but as others said more information is required to solve the problem.  Are you running the wires a long distance?  Are the wires twisted pair? Shielded?  etc..
Logged

Pages: [1]   Go Up
Jump to: