Bojan,
For my ROR I use a continuous cable connected to both sides of the roof, running over two pulleys and currently manual, but could easily be converted to a drive system. Basic and functional.
So far I was using only my hands (after climbing on a chair), and it wasn't hard to do at all.. At the moment I have 20mm straps from each side of the ROR that will go on the winch.
However, I want all that to be automated one day.. so I am taking my time with the project, I don't want to do something to prevent that final goal.. because I know myself (I tend to get used to things.. even if they are not too comfortable. And, recently I like to challenge myself..)
Motor is on the winch...
Next step is to think about forward/backward switch.
Most likely it will be custom made mechanical unit at first (3D printed collar mounted at motor bottom, using existing solder terminals as switch contacts).
The final solution will be H-bridge with suitable interface (USB, to be controlled by comp).
Yes , that sounds like it would help along with a vapour barrier under the styrene to keep the warm internal air off the metal roofing. Perhaps taping up the styrene joints would work.
Quote:
Originally Posted by bojan
Yes, courtesy Bunnings.. Work very well.
Couple of drops of water on the floor sometimes is due to condensation, I still have to sort it out (with polystyrene sheets most likely).
Bojan I think having a water proof cover over things is a good idea. It is easy to think that its inside so there is no need but I feel such is a sensible approach... minimises dust if nothing else.
I like using that aluminium foil stuff with foam on one side doubled so you have foil on both sides as it is not only water proof but a very good insulator.
Alex
Yes thats the stuff.
The girls here decided they did not like the fake plastic "timber" flooring and as they will just ripped it up...and thats how I discovered it... there was heaps of it and I used it on all sorts of things, which I cant remember, maybe in the small observatory??? and had to buy a big roll finally for the scopes...
But as I said I am so very happy to see you get this done ...now you must work less and use it...good luck.
Alex
All is OK with mt Pleasant Obs.. after 4 months of lockdown and earthquake and couple of pretty strong storms
BTW, I found something better for dew shield - 10mm foam covered/reinforced with Al foil. It can be sprayed with black paint to improve blackness of the foam surface (it is dark grey).