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  [2]joey/ [3]blog/ [4]entry/ solar powered waterfall controlled by a
  GPIO port

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  This waterfall is beside my yard. When it's running, I know my
  [11]water tanks are full and the spring is not dry.

  Also it's computer controlled, for times when I don't want to hear it.
  I'll also use the computer control later on to avoid running the pump
  excessively and wearing it out, and for some safety features like not
  running when the water is frozen.

  This is a whole hillside of pipes, water tanks, pumps, solar panels,
  all controlled by a GPIO port. Easy enough; the pump controller has a
  float switch input and the GPIO drives a 4n35 optoisolator to open or
  close that circuit. Hard part will be burying all the cable to the
  pump. And then all the landscaping around the waterfall.

  There's a bit of lag to turning it on and off. It can take over an hour
  for it to start flowing, and around half an hour to stop. The water
  level has to get high enough in the water tanks to overcome some
  airlocks and complicated hydrodynamic flow stuff. Then when it stops,
  all that excess water has to drain back down.

  Anyway, enjoy my soothing afternoon project and/or massive rube
  goldberg machine, I certainly am.

  [12]Add a comment

  Links: [13]offgrid/water

  Last edited Saturday afternoon, April 4th, 2020

References

  1. https://joeyh.name/ikiwiki.cgi?do=edit&page=blog/entry/solar_powered_waterfall
  2. https://joeyh.name/
  3. https://joeyh.name/blog/
  4. https://joeyh.name/blog/entry/
  5. https://joeyh.name/ikiwiki.cgi?do=edit&page=blog/entry/solar_powered_waterfall
  6. https://joeyh.name/recentchanges/
  7. http://source.joeyh.branchable.com/?p=source.git;a=history;f=blog/entry/solar_powered_waterfall.mdwn;hb=HEAD
  8. https://joeyh.name/ikiwiki.cgi?do=prefs
  9. https://joeyh.name/ikiwiki.cgi?do=branchable
 10. https://joeyh.name/ikiwiki.cgi?do=comment&page=blog/entry/solar_powered_waterfall
 11. https://joeyh.name/blog/entry/hacking_water/
 12. https://joeyh.name/ikiwiki.cgi?do=comment&page=blog/entry/solar_powered_waterfall
 13. https://joeyh.name/offgrid/water/

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