Nothing wrong with the concept, however, the code is "disinformation".

Reason: no Arduino can deal with Double (data-type) since, Single is
the only supported floating point type (aka: float, in AVR-C).

Do I simply format the content of the variables as a string of text, serial print them, and then de-format them into variables again on reception? Yes, this should do. Or is there a better or less cumbersome way to do it? If cumbersome is meant to refer to string-splitting, there are some solutions...

For diferent window coordinates (grapics mode) you'll want to look at: Window command.

The code you've posted uses WIN-API, which means: it's no longer OS independent.
(FB only code is OS independent, for all by FB supported platforms.)

Why using old code, that has not been updated for ages? Use example code from current FB-Manual (*.chm), instead: 'Example 2: type-union-type structure Type mouse As Integer res As Integer x, y, wheel, clip Union buttons As Integer Type Left:1 As Integer Right:1 As Integer middle:1 As Integer End Ty...

Suggestion:
replacing the Q&A with one or more CAPTCHA's may be more effective?
(easier on users while being harder for machines)

coderJeff wrote:"period" is a literal. Too hard?

Yes, I guess it is, because everybody is likely to assume "." (if literal isn't stated somewhere).

Try to increase the sleep value (in the loop, between send & receive), step by step ...

Not certain that this fixes any problems, it's just another try: Dim As String resp ' resp = response Dim As Single volt Dim As Long fn = FreeFile, j = 0 Open com "/dev/ttyUSB0:9600,e,7,2,rs,cd,ds,lf,pe" as #fn Sleep 3000 ' delay to let device enumerate Input #fn, resp ' see if we have a r...

It is not really easy to fix code for a device that one doesn't have for testing. The used protocol is also useful to know (commands, data e.t.c.). As a first try, comment out the lines 5 & 6 of your code because the opening of the COM- Port, can be done in FB-code (alone) and the following dela...

FB Manual wrote:-vec < level >

Set level of vector optimizations enabled by the compiler (default: 0)

I've never used this: Compiler Option
Dunno, what it is supposed to be good for, anyway. (don't think it's a bug, though)

I don't find a problem, if compiled with default language (-lang FB)?!?

If you are using another dialect, please specify ...

FB's standard data-types: CatPgStdDataTypes

ivory348 wrote:... my questions remain unanswered.

Nobody wants to discuss not working as expected code (aka: buggy code).
(whether it compiles or not, is not the match deciding factor)

Study the codes from fxm/myself and ask again, if there is anything funny there ...

Then also: what is the use of all this, in a program, given the existence of arrays. Well, first of all, the concept of push/pop comes from assembly language (not really BASIC). Secondly, at times, examples might not serve any 'real live' purpose, they may only try to explain a coding concept. Thir...

But, as stack's typically are of fixed size and work top-down, you could simply define more elements and take it from there (stack's are usually capable of growing "uncontrolled", downwards). Meaning: in real, it might just overwrite other code/data (use with care!) (with user defined arra...

Lets take this step by step: dim stack(0)as integer Is a fixed size Array with exactly 1 element (can't be re-sized, at all). Therefore, you'll have no chance of succeeding, right from the start. You need a resizable Array (aka: dynamic Array): ReDim As Integer stack(0) --or-- Dim As...