From Technologia Incognita
Revision as of 00:40, 3 May 2017 by Narya (talk | contribs)
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Participants Narya
Skills glass cutting, recycling, building, electronics
Status Active
Niche Other
Purpose Infrastructure

Green houses that are on sale are either ugly or expensive. With a bit of planning, patience and diy it should be possible to make a nice orangerie from second-hand material.

Skills to acquire: mason, woodworking and perhaps glass cutting

Status: building it

The plan

  • Search for free/cheap material on marktplaats. Bricks, doors, windows and pieces of glass are very often offered for free
  • Make foundation, build low walls, build the frame, build glass walls
  • Initially use plastic as windows. Replace the plastic piece by piece with (stained) glass found on marktplaats
  • Monitor and act on stuff with raspberry pi




Floor plan has been approved

Acquired materials

  • bricks (recycled from garden)
  • 2 doors (via friends)
  • 1 window 160x100cm (via marktplaats)
  • 2 rain barrels (via neighbour)
  • 4 windows for 3 walls (via neighbour)
  • more windows (via neighbour)
  • planks for low walls (via neighbour)

Build log

1 May 2017

greenhouse frame

The frame was made with square vertical bars (6.8x6.8) and smaller horizontal bars (6.8x5). Right angle for cutting is 22.5 (ends of the horizontal bars. The shortest (inner) side is 105cm and the longest (outer) side is 110cm. The vertical pillars are 40cm below ground level. The first horizontal bar 40cm above ground level and the second bar 210cm above ground level. Bars are connected with metal corner supports. The vertical pillars are fixed locally with no-mix concrete. Windows were cut to fit the frame (again a 22.5 angle).


  • Raspberry pi with screen and a few buttons


  • solar panel
  • battery

Climate control

Heat exchange by blowing hot air into the ground during the day (and heat the water of the soil) and blow warm air from the ground into the greenhouse at night

  • 10m flexible tube
  • computer fan (perhaps two)
  • temperature sensors at start and end of the tube


Sensors greenhouse

  • temperature
  • humidity (air)
  • humidity (pots/ground)
  • sunlight
  • doors and windows open/closed
  • webcam (time lapse)
  • water level of barrel

See WeatherDuino


  • alert when barrel is empty
  • watering system
  • open window when temperature and/or humidity is too high
  • website with measurements