[chbot] Knob shafts / extensions and insulation
markaren1 at xtra.co.nz
Tue Aug 30 19:25:47 BST 2016
Found some plastic shaft units:
Search "EC12 encoders" on AliExpress, or eBay
My fav on AliExpress "8 foot long shaft encoder 16 files 25MM"
On 30/08/2016 11:28 PM, Volker Kuhlmann wrote:
> I'm planning to put a mains voltage circuit into a suitable box with
> clear lid. One knob will have to come out through the lid. I'd like a
> rotary encoder with push switch - unfortunately, push switch and plastic
> shaft seem to be mutually exclusive. I can't find plastic shaft
> extensions either.
> Is it permissable to stick a metal shaft out through the lid, assuming
> the mains voltage side is appropriately insulated and tied down?
> Suppose in another project a capacitive power supply is sufficent, and
> Arduino runs on mains potential. Does anyone know a clever trick to
> use a metal shaft encoder here (without surgical replacement and 3D
> printed parts)?
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