Readings not correct with 3 analog inputs using lifa

[salah91]

Hello ,

  I am having a trouble with multiple analog inputs through my  Arduino on labview interface.  It seems like the signals are leaking into eachother, I use 3 analog sensors connected ro my arduino and when i run my vi the results seems not correct, and the signals form is too.but in another hand when i use just one single sensor it works great. is there any advice on how to fix this problem?

Thanks for any help

[hrh1818]

Connect the unused inputs to ground.

hrh212

[salah91]

Hi,

Is there other solution because it doesn't work for me, i did connect other pins to ground but it doesn't work the problem persist, labview still gives wrong data with a signal plotted not correct, it's seems that the values drops down and the execution is delayed when a add a second sensor to my arduino.

thanks for help hrh212.

Appreciate other suggestions.

[Sathish26]

In Arduino Pullup resistors are not connected.. we need to connect the pull pup resistors to make the floating voltage to constant Zero if the pin is unwired.