Exporting telemetry data

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API Endpoints for exporting telemetry data

The API has endpoints that allows the user to retrieve all the telemetry data from devices.
There is two different endpoint available.

Aggregated data

This data is aggregated by interval and a method (average, min, max), and is among other things used for the charts in our frontend dashboard.

The aggregated data can be retrieved by using this endpoint

 GET /logbook/storage/read/

Additional API documentation here: https://api.autopi.io/#/logbook/logbook_storage_read_list

The endpoint takes the following parameters

Parameter Description
device_id ID of the device (not the unit id)
field The field that the value should be retrieved from. See ‘Field’ below
field_type The type of the field. See ‘Field’ below. [float, geo_point, string, long]
from_utc From time in UTC. ISO format. “2020-01-01T00:00:00.000Z”
to_utc To time in UTC. ISO format. “2020-01-01T00:00:00.000Z”
interval This is the interval to use when aggregating. ie. data for 24 hour queried with interval set to ‘1h’ will return 24 data points, one for each hour. Ignored when aggregation is set to ‘none’
aggregation Method used when aggregating data into the specified interval. [average, min, max, none].
size Only used when aggregation is set to ‘none’, and will then return non aggregated values.

Example

How get logged altitude aggregated into 1 minute average values

GET /logbook/storage/read/
    ?device_id=6a6c53b5-e18e-4301-9c95-2516006bf7c6
    &field=track.pos.alt
    &field_type=float
    &aggregation=avg
    &from_utc=2020-07-06T10:03:36.352Z
    &to_utc=2020-07-06T12:18:14.050Z
    &interval=1m

Field

To know which fields you can retrieve data from, you can get the list from the following endpoint.

This will return all the available fields that can be queried, including the type of the field.

The data type can be derived from the fields, like so

Field Datatype
obd.speed.value obd.speed
obd.bat.level obd.bat

etc.

This is the list of data types currently available from a standard device.

Datatype
acc.xyz
ec2x.data_usage
obd.ambiant_air_temp
obd.bat
obd.coolant_temp
obd.engine_load
obd.fuel_level
obd.intake_temp
obd.rpm
obd.speed
rpi.temp
track.pos

Raw data

The raw data is not aggregated or treated in any way, it is in the same format as it was when it was sent by the device.

GET /logbook/storage/raw/
Parameter Description
device_id ID of the device (not the unit id)
data_type The datatype to retrieve. See ‘Field’ above.
start_utc From time in UTC. ISO format. “2020-01-01T00:00:00.000Z”
end_utc To time in UTC. ISO format. “2020-01-01T00:00:00.000Z”

Example

How get logged position objects raw

GET logbook/storage/raw/
    ?device_id=6a6c53b5-e18e-4301-9c95-2516006bf7c6
    &data_type=track.pos
    &start_utc=2020-11-24T10:13:21.276594Z
    &end_utc=2020-11-24T11:07:07.177850Z

How to export trips

To get trips data you will have to first retrieve the list of trips, and then retrieve the data that you need for the duration of the trip.

The trips endpoint here can give you the trips. (The trips can also be exported to excel/csv format from the trips page)

The reason that there is no single endpoint way to retrieve all data for a specific trip is because there can be a lot of data for trips, and our system can query and filter very large amounts of data very very fast, but the downside is that it is not really geared towards downloading large amounts of data in one go.

For enterprise customers we also support automatic exporting of trips which will call a webhook on an external system signalling that an export can be downloaded.

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