ostranauts pda guide: Step-by-Step Atmosphere Setup - Guide

ostranauts pda guide: Step-by-Step Atmosphere Setup

Learn how to use PDA cartridges, inspect ship pressure, manage gases, and stabilize atmosphere systems in Ostranauts.

2026-08-04
ostranauts Wiki Team
Quick Guide
  • ostranauts pda guide: Use cartridges to reveal power, damage, mass, price, heat, and pressure overlays.
  • Pressure target: Stabilize rooms near a livable mix before removing your helmet.
  • Pump direction: Confirm intake and output connections before switching a pump on.
  • CO2 control: Use a scrubber with a cartridge and an empty canister to remove carbon dioxide.
  • Emergency response: Isolate damaged rooms before pressure loss spreads through the ship.

ostranauts pda guide: PDA Basics and Overlays

The ostranauts pda guide begins with the PDA because it is the fastest way to understand what is happening inside a ship. The PDA is worn on the character’s arm and can hold cartridges that provide visual overlays. These overlays turn hidden ship information into readable colors, markers, and room data.

Press L to activate the selected overlay. Press X to cycle through available overlays without repeatedly opening the PDA interface. The exact information available depends on the cartridge installed, so changing cartridges can dramatically improve how quickly you diagnose a problem.

Video Highlights:

  • How PDA cartridges display power, damage, mass, price, heat, and pressure.
  • How room pressure changes when doors and airlocks are opened.
  • How pumps, gas canisters, vents, heaters, and CO2 scrubbers work together.
  • Why ship compartments should be isolated before atmospheric repairs.
OverlayWhat It RevealsBest Use
PowerPowered and unpowered equipment areasFinding inactive systems
DamageDamaged conduits and ship sectionsLocating repairs after impacts
MassThe relative weight of objects or ship areasPlanning storage and cargo movement
PriceApproximate value of selected objectsIdentifying valuable salvage
HeatTemperature patterns across roomsFinding hot or cold compartments
PressureAtmospheric pressure and room differencesChecking whether a room is safe

A basic cartridge may contain only one overlay, while modified cartridges can combine several functions. A cartridge identified as 103 can provide multiple overlays in one slot, making it especially useful when you need to switch between pressure, mass, and price information quickly.

The PDA also includes a home or file interface. Open it with Tab or through the home control, then review the PDA files stored on the ship. Files can be transferred between PDAs, and some may be sold at a station. Their value varies, so inspect files before treating them as disposable clutter.

PDA Efficiency

Keep one cartridge focused on engineering information, such as power, damage, or pressure. Use a multi-overlay cartridge when you are salvaging and need to compare mass, heat, and price without changing equipment repeatedly.

Power Overlay

Use it to identify powered areas and trace equipment that is not receiving power. It is useful during early system checks.

Damage Overlay

Use it after impacts, leaks, or unexplained system failures. Damaged sections are highlighted so you can investigate them faster.

Pressure Overlay

Use it before opening a helmet or crossing between compartments. It helps reveal unequal pressure between rooms.

Price and Heat

Price helps prioritize salvage. Heat helps identify environmental differences that may affect room safety and equipment planning.

PDA Cartridges, Files, and Controls

PDA management is more than selecting a single visual filter. Cartridges determine what information can be displayed, while files provide another layer of ship data that may be transferred or sold. A practical setup uses different cartridges for different jobs instead of expecting one tool to solve every problem.

PDA ControlFunctionPractical Situation
LActivate the current visual overlayInspecting a room or object
XCycle through available overlaysSwitching between pressure and damage
GExpand displayed atmospheric dataReading detailed gas and pressure values
Tab or HomeOpen PDA files and interface dataReviewing stored files or transferring data

When you press G while using atmospheric information, the PDA exposes more detailed readings. This is valuable when the pressure wheel looks acceptable but the room still contains an unsafe gas balance. Basic color information is useful for a quick scan; expanded readings are better for deciding whether to open a helmet or connect a pump.

The pressure overlay is especially valuable during construction. Opening an external door can drain a compartment, while a closed door can protect another room from the same pressure loss. The overlay lets you identify which room is losing pressure and which room remains isolated.

PDA files can also become part of your salvage routine. Review the file list before selling or transferring anything. A file may have meaningful value, and the value differs between files. Treat the PDA interface as an information-management tool, not merely an equipment screen.

Reading Data Correctly

Use the overlay for location awareness, then press G for detailed atmospheric values. The two views serve different purposes: one shows where the problem is, while the other helps you judge its severity.

1

Select the Right Cartridge

Install a cartridge that matches the task. Use power or damage overlays for repairs, pressure for atmosphere checks, and price or mass when sorting salvage.

2

Activate and Cycle the Overlay

Press L to activate the current overlay. Press X when you need to move through other overlays without returning to the full PDA screen.

3

Expand Atmospheric Information

Press G when checking pressure. Compare the detailed readings between rooms instead of relying only on a single color or pressure wheel.

4

Review Stored Files

Open the PDA home or file interface with Tab or the home control. Transfer useful data between PDAs and evaluate files before selling them.

Cartridge TypeInformation FocusRecommended Priority
Power cartridgeEnergy availability and powered systemsHigh during repairs
Damage cartridgeDamaged conduits and ship sectionsHigh after impacts
Pressure cartridgeRoom pressure and atmospheric balanceEssential before EVA recovery
Price cartridgeObject value and salvage prioritiesUseful during derelict clearing
Modified multi-overlay cartridgeSeveral overlay functions togetherStrong general-purpose option

Ship Atmosphere Setup and Pressure Control

Atmosphere management depends on compartment design, doors, pumps, canisters, vents, and gas composition. The safest approach is to treat each room as a separate pressure zone until you have confirmed that its atmosphere is stable.

A room exposed to space can lose pressure quickly. If connecting doors are open, neighboring compartments may also drain. Close doors before diagnosing the affected room, then use the pressure overlay to identify whether the loss is local or spreading through the ship.

The reference setup uses nitrogen and oxygen canisters connected to pumps. A breathable room is described as having roughly 70–80 kPa of nitrogen, around 23 kPa of oxygen, and a combined pressure near 100 kPa. Use these values as practical targets rather than blindly forcing every room to the same state.

Atmospheric ElementApproximate Working ReferenceRole
NitrogenAbout 70–80 kPaMain inert gas component
OxygenAbout 23 kPaRequired for normal breathing
Total pressureNear 100 kPaGeneral livable-room target
TemperatureAround 23°CComfortable breathing reference
CO2As close to zero as practicalWaste gas to remove with a scrubber
Protect Your Compartments

Do not open an exterior door while treating the connected area as isolated. Close internal doors first, or pressure can escape from multiple rooms and make recovery more difficult.

1

Seal the Room

Close doors to neighboring compartments and identify the external opening or damaged section. Keep the affected area separate while you inspect it.

2

Connect Gas Canisters

Place the appropriate canisters near the pumps. Confirm that the pump is connected to the intended gas source and destination.

3

Check Pump Direction

Verify that the pump draws gas from the correct canister and pushes it into the room. Avoid reverse mode unless you specifically intend to remove gas from the room.

4

Stabilize the Mix

Add nitrogen and oxygen gradually while watching the detailed PDA readings. Stop when the room approaches the desired pressure and gas balance.

5

Confirm Before Removing Your Helmet

Use the pressure overlay and expanded data to verify that the room is stable. Only then treat it as a candidate for normal breathing.

Pumps can also transfer gas between canisters. A full canister can be placed on the intake side while an empty canister receives the transferred gas. The game can detect canisters placed with the pump, allowing you to refill or consolidate gas without permanently installing every container.

Turbo mode can increase pump throughput, but it should be used with care. Faster movement of gas is useful during recovery, yet a rapidly changing room can become over-pressurized if you leave the system unattended.

CO2 Scrubbers, Vents, and Temperature

A stable room requires more than oxygen and nitrogen. Carbon dioxide builds up as characters occupy a compartment, so the CO2 scrubber becomes part of routine habitat maintenance. The scrubber requires an empty canister and a scrubber cartridge. The cartridge is consumed over time, with usage varying by situation.

The scrubber pulls CO2 from the room and stores it in the attached canister. Once that canister becomes full, it must be emptied or replaced. A pump directed toward space can be used to dispose of unwanted CO2, provided the system is configured correctly and the canister is connected to the proper side.

SystemRequired SetupMain Purpose
CO2 scrubberEmpty canister and scrubber cartridgeRemoves carbon dioxide from a room
Standard ventInstalled between compartmentsAllows manual pressure equalization
Automatic ventInstalled between compartmentsResponds to low pressure and controls passage
HeaterConnected to a thermostatRaises room temperature
Gas pumpCorrect intake, output, and canister connectionMoves or mixes gases

Vents are useful when two compartments need to equalize. A standard vent can be opened or closed manually. An automatic vent can detect low pressure in one area and control airflow between rooms. Automatic vents are particularly helpful for sleeping quarters or protected compartments because they can reduce pressure loss when another part of the ship is damaged.

Temperature deserves careful attention. Cold air can be heated toward roughly 23°C, but warming gas causes it to expand. If a sealed room is already pressurized, heating it can increase internal pressure. Monitor the PDA after activating a heater and avoid leaving a sealed system unattended during the warm-up period.

Safe Atmospheric Routine

Stabilize pressure first, reduce CO2 second, then adjust temperature gradually. Recheck the room after heating because gas expansion can change the pressure you worked to establish.

Scrub CO2

Install the scrubber, insert a scrubber cartridge, and provide an empty canister. Watch the canister level as carbon dioxide is collected.

Equalize Rooms

Use a standard vent for manual control or an automatic vent when a protected room needs conditional airflow.

Heat Gradually

Connect the heater to a thermostat and monitor pressure while the room warms toward a comfortable temperature.

Damage Response and Emergency Recovery

Atmospheric emergencies often begin with a damaged hull section, an open exterior door, or a poorly isolated room. Use the damage overlay to locate the affected area, then switch to pressure data to determine how far the loss has spread.

A visible vapor effect can help reveal where air is escaping. Once the leak is identified, close doors around the compartment. If the room is still connected to other living areas, pressure recovery will be slower and more gas will be required.

An emergency canister may provide a short-term solution. Damaging a gas canister can release its contents into a room, but this is a destructive measure and can waste valuable gas or create a new hazard. Small bottles are also fragile, so handle them carefully around pumps and equipment.

Emergency SignLikely ProblemFirst Response
Pressure falls rapidlyOpen exterior path or hull damageClose internal doors and locate the breach
Damage overlay highlights a conduitDamaged ship componentInspect and repair the marked section
CO2 remains elevatedScrubber missing, inactive, or fullCheck cartridge and canister capacity
Room pressure rises after heatingGas expansion in a sealed spaceDisable or regulate the heater
Pump moves gas the wrong wayReverse mode or incorrect connectionTurn it off and inspect direction settings
Do Not Chase Pressure Blindly

A room can show acceptable total pressure while still having an unsuitable gas balance. Always inspect the detailed readings before opening your helmet, especially after a leak or emergency refill.

Use protected sleeping quarters as a design priority. An automatic vent can help isolate them if another compartment is damaged. This does not replace good door discipline, but it gives you another layer of protection when the ship is struck or an exterior route is left open.

PDA and Atmosphere Safety Check:

  • Install a cartridge that matches the current inspection task
  • Use the pressure overlay and G for detailed atmospheric readings
  • Close internal doors before opening an exterior route
  • Confirm pump direction, canister placement, and reverse settings
  • Check CO2, temperature, and pressure again after every major adjustment

Ostranauts PDA Guide FAQ

The PDA becomes more valuable as your ship grows more complex. Instead of treating overlays as optional conveniences, use them as a repeatable inspection process: identify the problem, isolate the room, adjust the system, and verify the result.

Q: What is the most useful PDA overlay for new ship work?

Pressure is the best starting point for habitat safety because it reveals room differences before you remove your helmet. Damage and power overlays are the next priorities for repairs.

Q: How do I switch between PDA overlays quickly?

Press L to activate the selected overlay and X to cycle through the overlays available from your cartridge. A modified multi-overlay cartridge can reduce the need to change cartridges.

Q: Why does a room lose pressure when I open a door?

Opening a door can connect the room to a lower-pressure compartment or directly to space. Close neighboring doors, inspect the pressure overlay, and isolate the affected area before refilling it.

Q: How do I remove CO2 from a ship room?

Install a CO2 scrubber, place an empty canister in it, and insert a scrubber cartridge. The scrubber collects carbon dioxide until the canister fills, after which you need to empty or replace it.

Editor’s Recommendation

Build the habit of checking pressure, CO2, and temperature after every major door, pump, vent, or heater change. Small verification steps prevent larger atmospheric problems.

Inspection OrderQuestion to AskCorrective Action
1. DamageIs a conduit or hull section marked?Locate and isolate the damaged area
2. DoorsIs the room connected to space or a low-pressure zone?Close doors and vents as needed
3. PumpsIs gas moving in the intended direction?Check connections and reverse mode
4. Gas mixAre nitrogen, oxygen, and CO2 readings reasonable?Add, remove, or scrub gases
5. TemperatureDid heating change the pressure?Regulate the heater and recheck

For further visual reference, consult the relevant Ostranauts PDA and ship atmosphere demonstration. Use it alongside your in-game readings, since the safest setup depends on the exact room layout, canister state, and equipment connections on your ship.