{"id":154,"date":"2019-07-20T14:08:00","date_gmt":"2019-07-20T14:08:00","guid":{"rendered":"http:\/\/doctor-dark.co.uk\/blog\/2019\/07\/20\/greenhouse-computer-version-2\/"},"modified":"2023-12-18T12:18:49","modified_gmt":"2023-12-18T12:18:49","slug":"greenhouse-computer-version-2","status":"publish","type":"post","link":"https:\/\/doctor-dark.co.uk\/blog\/greenhouse-computer-version-2\/","title":{"rendered":"Greenhouse Computer Version 2"},"content":{"rendered":"
\n\n\n\n\n
<\/a><\/td>\n<\/tr>\n
Work in progress…<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n
<\/span>
\n
<\/span>
\n
<\/span>
\n
<\/span>
\n
<\/span>
\n
<\/span>
\n
<\/span>
\n
<\/span>
\n
<\/span>
\n
<\/span>
\n
<\/span>
\n
<\/span>
\nWell, the previous greenhouse computer could report the temperature, barometic pressure, and humidity, but it didn’t control anything, and the electric fan heater’s thermostat wasted a lot of electricity during the previous winter, as it wasn’t accurate, and the greenhouse got warmer than necessary.<\/span>
\n
<\/span>
\n The greenhouse needs to be kept above 5\u00b0C, to keep the citrus plants that over-winter in it alive, but not much warmer, and the fan heater doesn’t have any decent form of regulation.<\/span>
\n
\n<\/span> Anyway… Here comes Version 2 of the greenhouse computer. The three boards are, starting at the bottom of the stack,<\/span><\/p>\n