I'm running Domoticz v3.5163 with Armbian Jessie on a Cubie Truck.
I've just got a new Arduino mega clone today and decided to give it a quick test with a cheap Chinese transmitter and receiver (I know these are not good).
I uploaded firmware R39 on my Windows PC.
When connected , in Hardware the usb option /dev/ttyACM0 becomes available, but I cannot add "RFLink Gateway USB".

I click add, the screen refreshes, no change and no RFLink.
I updated to R41... no change
Tried different usb ports (both physically and by selector dropdown)... no change.
I have little doubt that I've missed an obvious step (I usually do

An ideas? Or is it a Domoticz issue? Though I can add other types of hardware.
Many thanks
Sean
***Edit*** This may be related viewtopic.php?f=6&t=12063