about | plot | data     forcast | inside | insulation | outside | power | solar | unused
  93.9%
Daylight
a2010

This CdS photocell is taped to a basement window facing out where it is relatively immune to indoor lighting. (more)

  34.2%
Shoplight
a2011

This CdS cell is located on the workbench next to the arduino running SensorServer. The desklamp shines directly on it so that will produce the highest values.

  0.0%
Rain
a2012

This moisture detector is constructed from fabric stretched between brass support which also serve as contacts. The conductance of the wet fabric pulls against a 100k resistor to ground.

  115.3v
Line
a2013

We're indirectly measuring the ac line voltage through a 12 volt ac wall transformer, a resistive voltage divider, half-wave rectifier and rc filter with time constant of about 1 second. (more)

  98.4%
Distortion
a2014

Peak line voltage as a perecent of that expected from rms average voltage. Switching loads "flat top" the ac line.

  117.5v
Line-RMS
acrms
We compute True-RMS from 20 cycles of the ac waveform.
  66.8°
Main
c12234
off 49301 hr

This unit is mounted on the first step of the stairs behind my favorite chair.

  64.7°
c15662
off 49301 hr

Sensor wired to exploit unused second pair in household phone sockets. The device currently sits on the bench near many others waiting to be deployed.

  77.8°
Furnace
c19356

This sensor is inserted into the hot-air plenum of my gas furnace, above the evaporator of the air-conditioner. (more)

  78.1°
Upstairs
c19808
off 55299 hr

This sensor is mouned on the side of my bedroom nightstand. It is close to an outside wall.

  43.9°
Storeroom
c21097

This insulated but otherwise unheated space is directly beneth a two-car garage.

  45.3°
Crawlspace
c21530

This sensor is in the crawl space underneath my daylight basement. It is exposed to the outside through a half dozen ground level vents.

  57.5°
c3045

Left rear in photo

  65.6°
Basement
c54551
off 64536 hr

This is our first-ever one-wire device. It sits in the mini prototyping socket used by the usb version of the arduino software. Current placement has it on the bench, in the basement, near the window.

  52.0°
Merlin
c57456

Merlin lives in the lower level where it can get a little chilly. We monitor his cage temperature to make sure he stays healthy.

  39.5°
Backyard
c63411

This unit is placed outside the basement window at the end of a steel tube that holds the sensor several feet away from the house.

  30.3in
Barometer
mpx4250

Strain gague absolute pressure sensor located in the shop.