I nearly blew up my Melzi 2.0 board accidentally the other day while probing around with my multimeter investigating a problem when I mistakenly thought it was powered down. It wasn't, and I didn't realize that fact until I caused an MCU reset and the fan twitched a few times.
That got me wondering what the Status LED does on boards running Marlin, as I have not noticed it doing anything yet on my Melzi 2.0
Can anybody enlighten me on this ?
(I expected that it would at LEAST activate the status LED once the MCU is running so you knew it was alive).
Martin
