I am not able to program my second arduino because they both use the same com port. In other words this picture says it all:
In order to upload my sketch I have to disconnect one arduino. How can I tell windows to use a different COM port?
It will be nice if I do not have to disconnect one arduino evey time I want to upload a sketch. I already restarted my computer and I get the same problem.
asked Jan 26, 2021 at 21:57
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4Can't you just choose another port in the port properties? It's been a while since I futzed in windows device manager...Majenko– Majenko2021年01月26日 22:39:31 +00:00Commented Jan 26, 2021 at 22:39
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15Never in my life have I seen that Windows allocates the same COM port number to two different devices.. weirdMaximilian Gerhardt– Maximilian Gerhardt2021年01月26日 23:07:28 +00:00Commented Jan 26, 2021 at 23:07
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1@MaximilianGerhardt The only explanation I can think of is that the two UARTs are completely identical and windows can't tell them apart at all. Counterfeit FTDI chips are known to clone hardware serial numbers. Windows also usually remembers the COM number a device had when it was last seen on a particular USB port, but it usually assigns a different COM number by default even for the same device if you plug it into two different USB ports. It could be that a cloned serial combined with a first-plug while the device['s clone] being already plugged in led to this COM port doppelganger...J...– J...2021年01月28日 04:10:30 +00:00Commented Jan 28, 2021 at 4:10
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@J... the cloning thing makes a lot of sense. I just recalled only one of my Arduinos would change port numbers when connected to different ports, and I thought that was the dead one. It also happened to be original.Edmore M Gonese Digolodollarz– Edmore M Gonese Digolodollarz2021年02月02日 18:36:46 +00:00Commented Feb 2, 2021 at 18:36
1 Answer 1
I did not knew I could change the port on windows. This is how I did it thanks to @Majenko's comment.
answered Jan 26, 2021 at 22:51
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