Hello folks !
PSA !
If you have been using a Smoothieboard in a 3D printer, you probably want to take a look at this :
http://smoothieware.org/temperaturecontrol#toc19
We updated the temperature control ( hotend ) documentation safety section to be clearer, and include more options for safety, and reflect the latest changes.
If you read, and implement the safety precautions described on this page, you can make your 3D printer much safer.
We strongly recommend you do so, and give us feedback.
Cheers.