Probably depends on your os, but see if you can get there via some os magic.
pi@pi4:~$ lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 0557:2008 ATEN International Co., Ltd UC-232A Serial Port [pl2303] <=== my serial2usb Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub pi@pi4:~$ ls -lgd /dev/serial/*/* lrwxrwxrwx 1 root 13 Dec 14 15:55 /dev/serial/by-path/platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.2:1.0-port0 -> ../../ttyUSB0 I only have one connected usb device but dmesg when I unplug/plug it in looks like: # run 'dmesg | grep -i usb' and look at the output [504700.602816] usb 1-1.2: new full-speed USB device number 4 using xhci_hcd [504700.707235] usb 1-1.2: New USB device found, idVendor=0557, idProduct=2008, bcdDevice= 3.00 [504700.707250] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [504700.707257] usb 1-1.2: Product: USB-Serial Controller [504700.707263] usb 1-1.2: Manufacturer: Prolific Technology Inc. [504700.719949] usb 1-1.2: pl2303 converter now attached to ttyUSB0 <=== my serial2usb My 'guess' is that if you run the same commands you will find two things under /dev/serial with enough differences to tell them apart. You might need to do this a little experimentally and compare 'dmesg' outputs with one then the other connected. But you should find unique stable identifiers under /dev/serial to try. On my ubuntu box I see /dev/serial/by-path used and I use that device in my Home Assistant setup. Works well there. I 'suspect' that weewx.conf could handle a /dev/serial/<something> if you could map what's where. I did find one reference that might help in cooking up udev rules, but it's pretty cryptic unless you read through it a few times. Then it's only kinda cryptic :-) https://groups.google.com/g/hbrobotics/c/QgJ84KHnrYs On Wednesday, February 21, 2024 at 11:17:24 AM UTC-8 Patrick Whaley wrote: > Hi. I have two AcuRite 5n1 weather stations (model #'s 01536 and 02064), > each connected to it's own host computer and successfully running weewx 5. > Additionally > they both are setup to upload data to Wunderground, and generate an MQTT > topic. One also uploads to CWOP. > > The host computers obtain sensor data via the USB data on the AcuRite > display units. > > I would prefer to have both weather stations connected to a single host > computer, so I attempted to do this via the 'How to run multiple > instances of WeeWX' instructions in the link: > https://github.com/weewx/weewx/wiki/weewx-multi > > Per the instructions I was able to configure weewx to successfully run the > stations with the same functionality as when they are connected to > dedicated hosts, albeit only one station can be connected to the host > computer at a time or I have the issues described below. > > One station's configuration is named 'yardA' (the AcuRite model# 01536 > unit) and the other is named 'yardB' (the AcuRite model #02064 unit). > > With both stations plugged into the host computers USB ports: > 1. When running both 'yardA' and 'yardB' at the same time, both stations > report data, but the data that is reported for both stations is exactly the > same. > > 2. When starting only 'yardA', weewx cannot 'pick' the model# 01536 unit > versus 'picking' the model# 02064 unit. > > 3. Likewise when starting only 'yardB', weewx cannot 'pick' the model# > 02064 unit versus 'picking' the model# 01536 unit. > > I have some suspicion the issue is being caused by using two of the exact > same AcuRite sensor units and both connected via USB. > > I unplugged/re-plugged both units to USB and ran 'dmesg' to see if there > is any distinguishing device information between the two units. Based on > this simple test I'm not seeing anything specific that would let weewx > distinguish between these two AcuRite's as different devices (although I am > far from being knowledgeable on most anything weewx/linux/python/etc.) > > > [ 78.637352] usb 1-1.3: new low-speed USB device number 5 using xhci_hcd > [ 78.743717] usb 1-1.3: New USB device found, idVendor=24c0, > idProduct=0003, bcdDevice= 0.20 > [ 78.743738] usb 1-1.3: New USB device strings: Mfr=0, Product=2, > SerialNumber=0 > [ 78.743750] usb 1-1.3: Product: Chaney Instrument > [ 78.754195] input: Chaney Instrument as > /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.3/1-1.3:1.0/0003:24C0:0003.0004/input/input5 > [ 78.754819] hid-generic 0003:24C0:0003.0004: input,hidraw0: USB HID > v1.11 Device [Chaney Instrument] on usb-0000:01:00.0-1.3/input0 > > [ 94.512418] usb 1-1.2: new low-speed USB device number 6 using xhci_hcd > [ 94.619178] usb 1-1.2: New USB device found, idVendor=24c0, > idProduct=0003, bcdDevice= 0.20 > [ 94.619201] usb 1-1.2: New USB device strings: Mfr=0, Product=2, > SerialNumber=0 > [ 94.619213] usb 1-1.2: Product: Chaney Instrument > [ 94.629809] input: Chaney Instrument as > /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2/1-1.2:1.0/0003:24C0:0003.0005/input/input6 > [ 94.630554] hid-generic 0003:24C0:0003.0005: input,hidraw3: USB HID > v1.11 Device [Chaney Instrument] on usb-0000:01:00.0-1.2/input0 > > I'm grateful in advance for suggestions anyone has on how make my > multiple AcuRite station setup work on a single host computer. > > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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