This is the software of the Engine Monitoring System described here :
https://avionicsduino.com/index.php/en/ems-engine-monitoring-system-2/
This module is based on a PJRC Teensy 4.1 board.
WARNING!
Version 1.6 or later of this software should only be used in conjunction with the Micro-EMS software version 4.03 or later. This is due to a major update to the CAN bus configuration in both software versions.
Version 1.5 should be used in conjunction with the Micro-EMS software version 4.02.