Data Log Formatting - nickywongdong/wombat GitHub Wiki

The structure of the various textual data logs are described below.

obd_log.csv

From left to right:

Field Units
Timestamp Date/Time (24hr)
Engine Load Percent
Engine Speed RPM
Vehicle Speed KPH
Throttle Position Percent
Relative Throttle Position Percent
Runtime Since Engine Start Seconds
Fuel Level Percent
Coolant Temp Celsius
Ambient Air Temp Celsius
Barometric Pressure Kilopascal

Note: Timestamp field uses the Axolotl's time/date.

ahrs_log.csv

From left to right:

Field Units
Timestamp Date/Time (24hr)
Pitch Degrees
Roll Degrees
Yaw Degrees

Note: Timestamp field uses the Axolotl's time/date.

Note: AHRS orientation is based on the PCB facing right-side up and the serial port end facing towards you. Positive pitch means below horizon, negative pitch means above horizon. Similarly, positive roll means roll to the left, negative roll means roll to the right.

master_log.csv

Collated obd_log.csv and ahrs_log.csv after Axolotl has been exited. OBD connection must be successful for this log to be produced (i.e. obd_log.csv for the current boot cycle must exist).

From left to right:

Field Units
Timestamp Date/Time (24hr)
Engine Load Percent
Engine Speed RPM
Vehicle Speed KPH
Throttle Position Percent
Relative Throttle Position Percent
Runtime Since Engine Start Seconds
Fuel Level Percent
Coolant Temp Celsius
Ambient Air Temp Celsius
Barometric Pressure Kilopascal
Pitch Degrees
Roll Degrees
Yaw Degrees

DTCs

DTCs are displayed as code number and code meaning, listed as tuple list, one per line.

Dashcam Footage

Dashcam footage is saved in 5-minute segments in the .mp4 format. The number following front_dashcam in the dashcam files' names indicates the segment number of that dashcam video. The date and time of the video file's creation correlates to the exact date and time of which video capture began.