RC8 firmware 3DP 16/17/18 so far Working smoothly for several users, thermal protection enabled.by Dan365 - Prusa i3 and variants
Thermal runaway is caused by failure to heat in specified time, the symptoms you see are magnified by lack of PID tuning. On thingiverse I have group Dan365, I have RC8 running smoothly and your welcome to complied hex fileby Dan365 - Prusa i3 and variants
Tube heater as used in green houses and a proportional heater control for lizards Foam mat interlocking squares as build box sides doubled and carpet spray glued togetherby Dan365 - Reprappers