Wifi with raspberry Pi 4

[taestygecko]

Hello,

I am trying to setup a simple PWM control in labVIEW that interacts with a Raspberry Pi 4 via wifi.

I am using a Raspberry Pi OS Light (64bit) and labVIEW 2022 Q3 (32-Bit) with installed packages such as VISA and Hobbyist Toolkit ect.

I have tried to find something related to this with no prevail. All I could find said I needed to connect Ethernet to the same router as my computer, however I work at a University and its hard to connect to a nearby router and need this to be done via wifi.

Other Raspberry Pi's and Beagle Bone's are showing up on my Target Configuration list but my specific one does not.

Is there a way to get labVIEW to communicate with my Raspberry Pi via Wifi only?

[billko]

It's been a LONG time since I thought about this, but it's something to do with the RPI's network config.  I think it's akin to making a PC discoverable on the network.

So why not buy a cheap travel router that allows you to keep your wifi connection to the University network while enabling you to have your own private network?

[taestygecko]

Thank you for the suggestion and reply,

Unfortunately this RPI will be inside a Vacuum chamber so I cant have a router inside of it or set up a CAT cable through the chamber itself

[billko]

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@taestygecko wrote:

Thank you for the suggestion and reply,

Unfortunately this RPI will be inside a Vacuum chamber so I cant have a router inside of it or set up a CAT cable through the chamber itself

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Unfortunately, there's your answer.  Your vacuum chamber is made of metal, so no wifi signal is going to get in or out of it.  I wish I had better news for you.

[rolfk]

Read about Faraday cage. They are very good at keeping electromagnetic waves confined. And Wifi simply is electromagnetic waves. Any hermetically closed metal casing is in fact a Faraday case, depending on the material more or less effective, but yours most likely is from steel in one form or the other.

[wiebe@CARYA]

If the vacuum chamber has a window, you could try a light bridge.

How to Send and Receive IR Signals with a Raspberry Pi (digikey.com)

Of course, there is a change the window blocks IR...

[billko]

All the vacuum chambers I've worked with have a bulkhead connector so you can make connections inside.  Is there any chance you can use this to bring an Ethernet connection into the chamber?  (It might need to be a custom plate.)

[taestygecko]

Yes this is something I have told researchers yet they insist of trying it out anyway

[taestygecko]

hmmm, this is something to think about as it does have a window directly where I will be placing the RPI

[taestygecko]

Yes they do have bulkheads but we only have two slots available I could maybe as a last resort connect an Ethernet cable through one.