Search for penmon monteith eto on the forums, I made up a script a while back for handeling the python/server side and a hack to make it work with 2.1.4 firmware. I have personally made an effort to recompile the firmware, for having it run internally, but I don’t want to release it publically for fear it may brick someone’s hardware because they believe it is plug and play ready. If you are interested in testing knowing it may ruin your unit I can email the firmware to you.