GVRET CANbus sniffer which can be used in conjunction with ESPHome. Can be used with CANbus monitoring tool SavvyCAN to remotely monitor CANbus messages by GVRET Network protocol over Wifi.
I used a Olimex ESP32-EVP board for this, this board has already a complete CANbus interface onboard without need for additional components.
Based on https://github.com/collin80/GVRET