Looking at tracker 20 on Fjalls we can see it settling into winter – running on battery:
now that average temperatures are below zero the solar charging of the battery is very rare (to save the battery from charging when too cold). It also skipped a few readings in january – which is unusual behaviour – possibly due to its base station misbehaving?
however the Fjalls base stays quite warm (especially in the sun!) so is solar charging OK.
we can see from plotting lat/long that it started to have more outlier readings recently (bottom right). There is usually a very consistent plot of points.
Its altitude jumped upwards in mid december! we can also see the drop due to melting before september and the gradual rise during autumn.
first we installed a new base station closer to the breidamerkurjokull glacier – which had retreated a lot! The new base uses GPRS to send rover data directly to our server.
then installed rover19 at 100m altitude on the glacier
carrying the Fjalls rover20 up to the glacier
new rover20 on Fjalls
We did our first tracker placement using the large UAV (Matrice 300) about 1km away on Breida at an altitude of 130m. We used a camera+release mechanism which gave us a down-looking feed to place it precicely in a safe area (which we can walk to). This tracker 21 has a smaller GPS and radio antenna and a light-weight “quadpod”.
We installed a Browning HP4 camera on the Fjalls base station pole to test it as a way of getting a long sequence of timelapse images. It has their solar panel fitted (small one half way up) – and is filled with lithium AA batteries.
The camera will take a couple of photos after sunrise and before sunset – it is very restrictive on timelapse unlike the Brinno cameras.