I can connect an arduino by serial to my laptop no problem using Processing. Is a Raspberry Pi likely to be able to maintain a permanent USB serial connection to the arduino, or am I likely to encounter any issues? Grateful for any advice from anyone who's tried this.
Although I cannot report of a connection to an arduiono I'd like to try an answer nonetheless (after all a serial USB connection is involved).
I am using a RaspberryPi (Type B /w Archlinux) with an USB-RS485-serial adaptor to connect to a solar cell rectifier. System uptime is 50+ days by now and serial connection has been working since then. I don't see any reasons as to why the RPi should not be able to maintain a permanent connection.
During setup and early stages I encountered a broken connection only once. usbcore failed to register the device driver back then. After updating and rebooting it worked fine again (and therefore I did not do any in-depth investigation of the reasons).