Gday Asimov
Interesting little project you have going there.
In my last post re dewheaters, i posted some piccies of a
simple one channel microprocessor ( PICAXE tm ) controlled dewheater
i have made. This uses a locally available processor, sensors
and the programming software / hardware is free.
( And easy to learn )
The chip required is about $15 and the digital sensors are about $6 ea.
You program in a form of basic, and this unit can read digital temp sensors and humidity sensors, and can also write to LCDs, back to yr PC etc.
As such, it is a very flexible solution.
Ie it would only be a code change to allow it to drive a peltier unit.
You could then preset an absolute temp to get the box to,
or even
( if used in the real world ) set a temp/ temp delta and
use it as a "reverse" dewheater.
Ie stick a sensor on the mirror and one for the air.
Then program it to keep the mirror at X deg, Xdeg above air etc
Once built, the functionality is all controlled by code,
and if you want, you can watch what its doing on yr PC.
( You said you had cloudy nights to waste
)
Andrew
For those that don't know, the plan is to put the OTA in the box & cool the whole thing.
![[1ponders]'s Avatar](../vbiis/customavatars/avatar45_9.gif){kind=avatar}
