As part of a CSci232/Phys 232 class project, sensors[1] were placed in the Thompson Hall greenhouse. There are six sensors, four placed near the centers of the southeast, northeast, northwest, and southwest quadrants, one outside in the shade (to measure ambient temp), and one exposed to sunlight (to measure insolation).

Because of its location, there is no network connectivity, so data are transferred manually approximately once a day. For this reason, the most recent data may be more than a day old.

If you have questions about this system, contact Randolph Bentson.

Below are some of the data collected and some of the software used to collect and display the data.

• raw daily data
• raw daily plots
• examples and keys to graphs
  • key to data
  • details of two cooling cycles
  • details of two heating cycles
• data collection and display commands
  • show_log.py
  • gnuplot commands
  • recording program tempC.c

[1] The sensors are Dallas Semiconductor DS18B20-PAR and DS1822-PAR digital 1-wire thermometers.