Controlling temperature of reprap extruder hot-end

Ok, I'll try that.

I just noticed that there is a auto-tune pid component! I'll give it a try to.

Thanks,

I made some tests with the at_pid component: I don't get good results.

I noticed one thing which may be an issue in my case: the pid output goes from -max to + max. When the feedback is higher than the command, the output goes to négative values.

In my case, negatives values have no effect, as the pid output is connected to a pwm. But the pid thinks it can 'brake', which is not the case, as it could be with a servo motor.

Is there a way to tell the pid that the minimum value it can use is 0?

No idea?

I can't see how to stop pid at zero.
how about using a limit component or absolute component.

or write your own PID component.

I can't truncate, as the at-pid comp still think it can reach -max value, but I just need to match the at_pid output (from -max to +max) with my pwmgen input, with scale and other comps.

Thanks!