General
Solar charger controller
user manual:
datasheet:
DC-DC converter
datasheet:
Modem-Router with digital output control (relay)
Relay wiring
Relay D0 should be DFN camera.
Relay D1 should be Amos.
First design (off by default) 
New design (on by default). Use a 2.2kΩ resistor.
AMOS-Spec for fireballs
Replace HDD
1) Open the side.
2) System shutdown. Either:
A) connect screen and keyboard, figure out and note the folder structure on the data HDD and how/where it is attached to the filesystem, to be able to replicate that with the new drive. Shutdown the system.
B) Ask the Slovak team to shut the system down.
3) Disconnect power (either by disconnecting the cable, or switching the output off on the MPPT.
4) Replace the HDD physically, label the old drive with masking tape (location, which system - AMOS All-sky or Spectral, date).
5) Let the Slovak colleagues know, to verify all works well, and reformat if necessary.
Forrest
Mundrabilla