Richard Hughes wrote: > This is great, thanks. One tiny nit, the > > # ColorHug > ATTRS{idVendor}=="04d8", ATTRS{idProduct}=="f8da", > ENV{COLOR_MEASUREMENT_DEVICE}="1" > > line is present in libusb/55-Argyll.rules but not in libusb1/55-Argyll.rules Hi Richard, I think it's the other way around - present in libusb1/ (the configured driver), and not in libusb/. I'll fix it though. BTW if you #define ENABLE_COLORHUG in the spectro/ build then the ColorHug will be enabled without the need of an environment variable. Graeme.