Bare minimum microRusEFI instructions:

Fabricate "pre-populated" 80% ready microRusEFI at https://jlcpcb.com/

You would need three files to do that - gerbers archive, BOM and placement files."

Check for latest version in repository.

https://github.com/rusefi/hw_microRusEfi

https://github.com/rusefi/hw_microRusEfi/tree/master/gerbers

Order the following 8 parts:

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Once you solder 8 parts to your 80% ready microRusEFI upload firmware into micro-controller

https://rusefi.com/build_server/rusefi_bundle_mre_f4.zip

More info like connector & case see https://github.com/rusefi/hw_microRusEfi

For quicker results fully assembled units are available at https://shop.rusefi.com/