05-04-2011 10:12 PM
Hi everyone!
I am fairly new to LabVIEW.... I have to do a final project for my class and I need help! We have to use some sort of transducer, connect it to NI Elvis, and then recieve the data on LabVIEW. I planned on making a breathalyzer using a MQ 3 gas sensor. I have made the circuit, but I don't know what to do then....I did put a DAQ assistant in the block diagram and then...I got kinda stuck. First of all I am not real sure what the output is from the MQ3 I believe it is volts. Then I tried to run it (in Volts) and the only result I could get is about -5.3V. If anyone has any idea of what I should do or what program I should write let me know. Also on the MQ3 site it says to calibrate it to 0.4mg/L (I think-or something like that and I don't know what to do to calibrate it)
OR
Does anyone have an idea for a easy project that uses LabVIEW and transducers....something that I could easily find parts for within the school or at radioshack would be best---I have to have it done within two weeks!!!!
Thanks!!!!!!!!!!!
imeener
05-04-2011 10:21 PM
First verify your analog signal with a mulitmeter.
Then check that the Ground in correctly connected to the Analog Ground on Elvis.
//Mike