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Volt Auto Upgrade Lite is a lightweight QoL mod (WIP) that automatically marks newly built entities for upgrade to the best unlocked tier — so your construction bots can handle upgrades without constantly using an upgrade planner.

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Hi engineers

I’m currently working on my first Factorio mod:
Volt Auto Upgrade Lite (WIP)

A lightweight QoL mod that automatically marks newly built entities for upgrade to the best unlocked tier.
The goal is to reduce the constant need for upgrade planners during normal building: you place lower-tier entities and the mod marks them for upgrade so construction bots can handle it later.

Current Features (Work in Progress)

Auto-upgrade marking on build

works for player-built entities
works for robot-built entities

Multiplayer friendly approach

per-player enable/disable toggle
server controls category settings
No on_tick logic → event-driven and low overhead

Hotkey toggle: ALT + U

Supported entities (current WIP scope)

Belts
transport belt → fast belt → express belt
underground belts
splitters
Inserters
inserter → fast inserter → stack inserter
Assemblers
assembling-machine-1 → 2 → 3

Planned / Ideas

optional whitelist/blacklist per entity type
support for more upgrade chains (power poles, furnaces, etc.)
better handling options for blueprint/robot builds (if needed)

Feedback wanted

If you have suggestions on:
which entities should be included next
edge cases in multiplayer
upgrade-chain priorities

…please let me know. I’d love to get this right before the first “stable” release.

— Volt