From: gherold@teachspin.com   
      
   On Friday, January 12, 2018 at 6:38:44 PM UTC-5, Rheilly Phoull wrote:   
   > On 13/01/2018 6:28 AM, Jasen Betts wrote:   
   > > On 2018-01-12, rickman  wrote:   
   > >> terra wrote on 1/12/2018 3:36 PM:   
   > >>> On 01/11/2018 09:32 PM, Jasen Betts wrote:   
   > >>>> As is seasonally traditional, we recently had a dying tree in our house   
   > >>>> the tree had  no roots, the base of the trunk sat in a vesel of water,   
   > >>>> and if the water is not kept topped up the tree dies before the end of   
   > >>>> festivities.   
   > >>>>   
   > >>>> So I decided to instrument the plastic vessel to confirm water level,   
   > >>>>   
   > >>>> ...   
   > >>>>   
   > >>>> but am I doing anything dumb there?   
   > >>>   
   > >>> All of it.   
   > >>> I just watched Yule Log on TV. Pretty good.   
   > >>   
   > >> I'm not sure why a gadget is need to measure the water level.  A live, cut   
   > >> tree needs to be topped off every day or even twice a day.  Just set an   
   > >> alarm...   
   > >   
   > > I'd rather do it at my convenience, and I'm learning stuff, and   
   > > justifying the pile of junk.   
   > >   
   > >   
   > You can get good results with analogue stuff too, a couple of electrode   
   > sensor rods joined to a simple transistor switch.   
      
   Can you make an oscillator that turns on with higher resistance?   
   (I think I know how to do that.)   
      
   George H.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)