LOL
It's the low power distribution/control box for the truck... quite a bit happening in there...
Boost converter creates a 17V rail for buck converters elsewhere downstream... mostly fans, but the Peltier "night control" is also run from 17V as well.
There's a 4 channel receiver with latching outputs that control 4 of the fan subsystem, as well as the buck converter for two of them.
Laptop DC feed comes from this box as well, and passes thru what I call the "UPS" diode... just an isolator for the OEM and homebrew modded boost brick... Essentially it can get power from either system, as well as its own battery of course (still good for about an hour as of the moment). The homebrew brick is tweaked just slightly below the OEM brick so that when AC is available, the SMPS charger for the main batteries doesn't need to carry it.
WiFi sub feed also comes from here, into a separate control box in the shelf above (not visible in the above pics).
There are 2 fuses, each 10A. "Laptop" and "everything else". Upstream is fused at 20A.
On the front panel, the master switch/pilot, laptop brick control w/pilot, and what amounts to the winter/summer fan "thermostat". The fans operate continuously variable based on room temp, and back off as the temp goes down to expand the room's comfort zone by keeping the apparent temperature the same.
Oz/Bj, maybe this looks better... same basic functionality, but might make more sense to some
I'll put them up as if to go backward in time for those who have trouble following...
There ya go haha
Steve
