A quick search revealed that I needed the usb-acm kernel module, so that is what I installed: opkg list | grep -i acm So, I needed some kind of ACM driver for OpenWRT. cdc_acm 3-3:1.0: ttyACM0: USB ACM device Plugging in the Arduino on my Ubuntu Linux desktop showed that the Arduino is a “USB ACM” device: usb 3-3: new full speed USB device using ohci_hcd and address 4 Plugging in the Arduino via USB did not look very promising, a dmesg only showed: usb 2-1: new full speed USB device using uhci_hcd and address 2 Pondering how I was going to do the logic level shifting from the 3.3V on the Asus to the 5V on the Arduino, I wondered if it would be easier just hooking up the Arduino via one of the two USB ports on the Asus WL-500g deluxe router. I found that this router has an internal header with two serial ports and I was planning to use one of these ports to link to my Arduino. I want to hook it up to a Asus WL-500g deluxe router running OpenWRT. This central heating monitoring system I am working on is built around an Arduino Uno.
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