Now we're talking.

How long is the Arduino sketch? If you can narrow it down to a reasonable size, post it here. There are people familiar with that platform who can help.

By looking at your sketch, it should be trivial enough for someone to throw together a complete hardware test platform to simulate what you're doing, and help you figure out the problem.

In reply to Re^3: Win32 Serial Read input from device by stevieb
in thread Win32 Serial Read input from device by PilotinControl

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