A Hellen-One board with a 81 pin connector for rusEFI! An ultracompact and cheap yet full-functional 8-Cylinder ECU board compatible with M7.9.7/ME7.9.7/ME7.8.8/Yanvar7.2/Micas10.3.
https://github.com/andreika-git/hellen-one
For more details see https://github.com/rusefi/rusefi/wiki/Hellen81