For some time, I have wanted to actually test a photovoltaic (PV) panel.  I would like to measure the panel temperature and power output, along with how the power changes with the panel angle etc.  I needed to purchase one for my remote bush weather station project (more on this project later), so this is a great opportunity to run these tests.

A RJ-45 junction box is being used to allow a further run on to the solar panels at a later date.  Here is a DS-18B20 temperature sensor hanging in the attic space

This is a graph of 24 hours of 5 minute intervals of readings by 10 DS-18B20 sensors.  The 'Y-Axis' is in degrees C.  It shows each sensors difference from the group average.  They are all well with-in the 0.5 deg. C limit.

Four x DS-18B20 temperature sensors ready to be installed.  The RJ-11 plug will be installed later.

The sensor is in permanent shade, behind a large pot plant.

Leads are ready to be securely heat shrinked and then selasticed so that it's waterproof.

12V DC fan to help pull in cold air form the outside.  There is aDS-18B20 temperature sensor mounted onto the outside cable conduit.