Fan switch on/of and speed regulation - LCD Repair from overheat defect

Hi, some week ago with the arrival of summer heat, I had an overheating problem of the LCD monitor. The problem and solve is show into video that you can see at the and of this post.

3d printing Filament Driver

Hi, some time ago .. during the last Christmas holidays, I try to make a strong filament pusher because with my new e3d hardened nozzle,   I had filament slip problems during normal speed print process ...