HW EON AND PANDA - Lukilink/openpilot GitHub Wiki
This is EON. An extremely powerful piece of hardware which runs openpilot. We also need Panda, which connects EON to the OBD2 port of the car. So that EON can talk to the car via CAN-Bus. You purchase EON and Panda from comma.ai.
I have used a cheap OBD2 wire connector to pinout the panda.