Homebrew PCBs

..
>
> Hi Esteban,
>
> I'm impressed !  You did a great job.
>
> I really like all the text in copper.  Also, the traces look like you
> were able to get good resist.

Looks very clean, yes. Text in copper: i reduced it to almost zero after
getting the two-side component legend "silkscreen" done. you can put much 
more
information on it.

>
> If you guys want to keep the discussion about how to set the circuit,
> I think most of us on here would like to 'listen in' and think that
> we would be interested in tuning the circuit.
>

Getting his 2 second oscillation results i think there is not much 
tweaking needed.
Hysteresis won't make it better, and a rate component is IMO not helpful 
for beginners.
also it must be a very big rate comp. (heating systems are very slow) and 
i have
no experience with that, and no time to experiment just now.
The zero crossing detector of the opto "slots" the control input and 
prevents too much
oscillations i think.
If a control loop guru is willing to provide assistance i will try 
modifications.

ST

> Dave