Is there a way to not create unique COM port numbers for each connected arduino, which I only need for testing after build? Before I upgraded to a new machine, the COM number ran up to a very large value on my older machine! I know Linux always starts from like USB0 regardless what you plug in. I want this optional feature for win system, any software or settings to tweak to get it?
In Windows, you "can" delete old connections, but you must start device manager with a batch switch:
REM http://support.microsoft.com/kb/315539
ECHO OFF
CLS
set devmgr_show_nonpresent_devices=1
start devmgmt.msc
Now, from the view/tool menu, select show hidden devices ...
Under the serial/comm device tree, press Del key on virtual comm ports to clear out the lot.
Close device manager, plug in an Arduino, and the P&P system will now begin assigning immediately after physical on-machine device numbers, typically Com3,
Ray