Longer term (probably not for the next release) I'd like to do output channels as well. There's some limited support for outputting to Modbus RTU devices, but support for a broader range of output types might be useful if I ever have a good test platform for experimenting with control automation strategies. I have a theory that manipulating heat settings in a drum roaster is mathematically very similar to the problem of aiming WW2 era anti-aircraft guns. (if true, we can do better than PID)