write and read to arduino at the same time

[TomPap]

Hi there people

I have this lab project where I control a servo through LabVIEW 2010 and arduino UNO REV3. The thing is to sample values from arduino' s analog input 0 (I have connected a photodiode), every 5 degrees of servo's position and make a table of sampled values vs degrees.

I know  there are two VI arduino examples in LabVIEW: Arduino Servo VI and Arduino Photocell VI (which I tried separately) but I can' t combine these two together. Please help me.

[Kristoff2]

TomPap,

I recommend looking into the State Machine Architecture and Producer Consumer Architecture.

Post some code and we'll see if we can point you in the right direction.

-Sam K

[Nathan_B. · Accepted solution]

It sounds to me like you might just be trying to initiate Arduino twice.  To write an angle an then immediately read a value from the photocell you need to do something like this:

If you need special timing to make sure that the servo has finished moving then you would want to use one of the options given by Sam.