I have some arduino with temperature sensors. Reading is via snmp. Is it possible to do graphing in librenms? In my cacti I made a template.
Are the “Arduino” showing up in LibreNMS a “Generic Device”?
Does it look like this? 
The problem is with snmp in arduino. There is not a full snmp but a lightweight version.
[email protected]:~# /usr/bin/snmpget -v1 -c public -Oqv -m SNMPv2-MIB -M /opt/librenms/mibs
udp:10.133.139.25:161
sysObjectID.0
Error in packet
Reason: (noSuchName) There is no such variable name in this MIB.
[email protected]:~# /usr/bin/snmpget -v1 -c public -Oqv -m SNMPv2-MIB -M /opt/librenms/mibs
udp:10.133.139.25:161 .1.3.6.1.2.1.1.1.0
Agentuino, a light-weight SNMP Agent.
Loading temperatures is over 1.3.6.1.4.1.36582.0.1.x
I have never found a mib table
that is going to be difficult to implement if this no or little support for SNMP.