The BTCGarden AM-V1 has a simple setup UI using a proprietary interface that uses cgminer as the backend. Simply type in 192.168.1.123 to access the static address for the interface. You can change it to a different address and new images such as the 7.12 version I am using here have DHCP that you can enable if you do not want or need static addresses. On the config tab, you enter your pool info as normal. On this page, you will also see the “board nums” box, where you will add the number of boards you have connected. In the case of an AM-V1 that would mean 2 should be entered here. For additional AM-V1s installed in line, you would add 2 for each unit so 3 AM-V1s would mean you put 6 in the “board nums” box. The top limit the RPI seems to be able to handle is 4 AM-V1s before errors can happen (this would be 8 boards total).