Error 5004 when using the Read VI for ultrasonic sensor on Raspberry Pi

[Fern255]

I'm trying to use the Hobbyist toolkit to read distance from an ultrasonic sensor through a Raspberry Pi 3B+ but just get this error 5004

[imran01]

HI 

can you help me i have the same error ?

[Fern255]

I couldn't get the ultrasonic read VI to work. I ended up writing python code to read from the sensor and then used the system exec VI to call the python code using SSH and pass the values into LabVIEW.

You will need to do the Chroot SSH trick for the system exec SSH to work. 

The solution on this topic explains the steps you will need to do. https://forums.ni.com/t5/Hobbyist-Toolkit/Run-python-script-in-LabVIEW-LINX/td-p/4174748 

[imran01]

the code and error 

[connjos]

I'm having the same issue with accessing an ultrasonic sensor with LabVIEW and a Pi, can you provide an image of the VI or the VI you are using to interface with the ultrasonic sensor.

[connjos]

I was able to resolve it by building a VI using the Wait Express VI and Flat Sequence Structure. The following is the code developed. Current code just loops but I will be updating to a SubVI that takes five readings and then returns the average.