Note regarding timing

[atchoo78]

Hello,

First of all, thank you for this!
Running perfectly on PHP 7.3.10 (XAMPP).

At first I was having trouble sending serial messages to Arduino, until I realized Arduinos reset on every connection, so I simply inserted

sleep(2);

directly after opening the serial port and before

$serial->sendMessage("Whatever");

Same thing applies to some serial Bluetooth devices.

Best regards,
Andreas