Steve and I paid a last visit to Marshall today.

Steve replaced the power supply we were using and changed some settings on the Victron, which restored power to the DSM. The new power supply is in the corner of the job box to protect it since some parts aren't shrink wrapped.

I updated the static IP configuration on the dsm and the tower ubiquiti once they were back on. The dsm can now connect to the outside world and the dsm and both ubiquitis are accessible from the ucar network. (See post about networking for more details). I also need to check if these are accessible from everywhere, or just on the ucar network.

I am working on getting dsm dashboard running, which should eventually be accessible at tt.ucar.edu. For now ncharts is running on datavis-dev.

1 Comment

  1. Steve Oncley

    IMPORTANT!

    A few more details on power:

    • The power supply I'm now using is an open-frame supply where it is possible to touch live AC power connections.  As Isabel notes, I put shrink wrap over the most obvious connections, and rotated the supply so that the AC connections are to the rear of the job box.  I tried putting the whole think in one of our plastic jugs, but it seemed to be getting too hot, and wanted more airflow.
    • To get better performance from the Victron (and because it was available), this supply outputs 28V.  DO NOT PLUG IT DIRECTLY INTO A DSM!  When I'm next there, I'll label this cable (as I did for the CHEESEHEAD marsh sites).
    • Once all was connected, the Victron was drawing 2.4A from the power supply, which is only rated for 2A.  I thus changed the Victron settings to charge the batteries at a maximum of 4A (4A at 12.67V worked out to 1.9A at 28V).
    • Finally, to keep the data going, I changed the Victron output parameter from "Battery Life" to "Always On", which potentially can drain the battery, but leave the station going.  (I was concerned, at least for the moment, that the batteries were already nearly drained and thus that the Victron might keep on shutting off.  We might revisit this parameter in a few days once the batteries are topped off again.)