Automated Trade Ship Mk II

[Aster1]

My last automated interplanetary trade ship suffered from long-term CO2 issues (as AndreyKl pointed out), so here's my next attempt:

The gas sensor is looking for CO2 - when it's detected, the timer takes over control of the automatic airlocks and chomps the CO2 out of existence.  A little exploit-y, but I think it'll work better than the Oxyfern.  When there's no CO2, the atmo sensor controls the airlocks: open when > 2000g so no more is pumped out, closed when under to allow more O2.

[ghkbrew]

I think your door chomper is going to eat a lot more oxygen than CO2. My solution is to run a rail of oxylite along the bottom of the capsule. It deletes CO2 and provides O2 at the same time.

[Aster1]

So far it works pretty well - the gas sensor doesn't go green until there's a decent amount of CO2.  I like the oxylite idea, I'll try that next!