A couple of minor suggestions for the extremely useful serial monitor:

1. The time stamp to be 24 hour clock
The time stamp already has the leading zero for hours but it's 12 hour clock, so 07:30:27:123 could be early morning or evening time. When doing long term testing this is confusing! While in that bit of code, why not add the date as well: 2022-07-30 07:30:27 (not sure we need the milliseconds to be honest!). I suppose these could be options but you've probably got more options than you want already.

2. Button to clear the received data window
Yes I know I can set to clear on send or clear on open but that's fiddly when all I  wanted to do was clear the screen on demand, say after an unexpectedly large splurge of data .

And a comment:

If I click in the receive data window that turns off auto-scroll, which is a good thing when stuff is scrolling past. But it stays off when I click elsewhere, e.g. the send button. I routinely send commands to the Arduino which then sends back a response. I get all concerned when I see nothing, then I realise auto-scroll has been turned off  . Not a big deal but I wonder if auto-reconnect could revert to 'on' in these situations?

Thanks 

John

Thanks Tim.

Most times I inadvertently turn off auto-scroll is when I've been in some other app and just clicked arbitrarily in the serial window to bring it back on top. Of course the output area is the biggest part, hence the inevitable happens! I shall have to be more careful with my clickery.

I didn't know about the double click trick. That works just fine, thank you.

John
(Long time very satisfied user... perhaps I should post here more often)