當我從我的Arduino納米USB接口連接到我的OpenWrt的路由器則命令lsusb顯示：如何將Arduino nano與秦恆電子HL-340 USB串口適配器連接至OpenWrt？
Bus 001 Device 003: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter
但我不/dev/tty*
我已經kmod-usb-serial安裝獲得新的串行設備。
發佈此信息以防其他人有用。答案原來是我所需要的kmod-usb-serial-ch341內核包：
opkg install kmod-usb-serial-ch341
的HL-340是CH 340兼容設備。
安裝ch341驅動程序後，nano顯示爲/dev/ttyUSB0，默認爲115200波特。從dmesg
[ 20.000000] usbcore: registered new interface driver ch341
[ 20.000000] usbserial: USB Serial support registered for ch341-uart
[ 20.010000] ch341 1-1.2:1.0: ch341-uart converter detected
[ 20.040000] usb 1-1.2: ch341-uart converter now attached to ttyUSB0
是的，沒想好！ – meesern
又見https://unix.stackexchange.com/questions/189896/testing-if-hl-340-works/361199 –