Understood..., and thx for the specific pointer to an SSR.

When I have an excuse to unseal my next spool of PLA..., gonna give it the blue tape vs heated bed test. And for sure..., a trip to Amazon for a new metric dial indicator is in the works.

And heck..., the SSR is probably worth it, even in bang-bang mode, just for the quiet.

Quote Originally Posted by printbus View Post
Soft PWM ....

I didn't mean to exaggerate the complexity of the hardware PWM. My point is that for someone not familiar with them, the hardware timers/counters can be daunting because of the extensive amount of flexibility ATMEL built into them.