Airlock Controller

Sequential airlock cycling with depressurize/pressurize phases.

Wiring

Pin	Device
d0	Inner Door
d1	Outer Door
d2	Active Vent

Script

local LT = ic.enums.LogicType

local INNER = 0
local OUTER = 1
local VENT  = 2

local function close_all()
    ic.write(INNER, LT.Open, 0)
    ic.write(OUTER, LT.Open, 0)
end

local function depressurize()
    close_all()
    ic.write(VENT, LT.On, 1)
    ic.write(VENT, LT.Mode, 0)   -- Outward
    sleep(5)
    ic.write(VENT, LT.On, 0)
end

local function pressurize()
    close_all()
    ic.write(VENT, LT.On, 1)
    ic.write(VENT, LT.Mode, 1)   -- Inward
    sleep(5)
    ic.write(VENT, LT.On, 0)
end

-- Cycle: inner open → close → depressurize → outer open → close → pressurize
while true do
    pressurize()
    ic.write(INNER, LT.Open, 1)
    sleep(5)
    close_all()
    depressurize()
    ic.write(OUTER, LT.Open, 1)
    sleep(5)
    close_all()
end

How It Works

The airlock cycles through a safe sequence: pressurize the chamber, open the inner door, wait, close, depressurize, open the outer door, wait, close, and repeat. The sleep() calls naturally pause execution — no state machine needed.