Standalone Factorio 2.1 version of Reika's Factor-I/O: circuit sensors for inventories, fluids, power, robots, trains, enemies, research and time of day. No DragonIndustries needed. Private-use derivative of Factor-I/O by Reika (https://github.com/ReikaKalseki/FactorIO).
This mod is maintained mainly for my own server and shared for anyone who finds it useful. Bug reports and suggestions are welcome, but I can’t promise to add features or take custom requests.