Modems with ExtraUtilities Drums

Hi!

I'm trying to write a program to control my mob farm. I've managed to set up my monitor with buttons to turn on lights and spawners etc., but I'm having trouble with monitoring whether or not I'm getting enough mob essence to keep the spawners running. I'm storing all the mob essence from my grinders in a drum (because it's nice high density storage and I don't have much space available), and then redistributing it to the spawners from there, so ideally I would like to connect a modem to the drum and then have some code to display the change in mob essence level, but I can't even attach the modem to the drum. Is this just not a feature and I'll have to find some workaround, or am I doing something completely stupid?

Almost all specially rendered blocks (Chests, drums, cables, ect) cannot have modems attached to them, However some blocks do allow it, such as the top and bottom of a thermal expansion tank can have a modem. Just try all the sides. If you cannot attach the modem, you will need to put a computer next to the drum for it to work.

There's also peripheral proxy blocks, such as the ones in OpenPeripheral. You stick the proxy next to the peripheral you wish to use, then attach the modem to that. I've found them to be a little buggy (weird things happen if you break the peripheral then fail to break the proxy), but they should get the job done.