Logging Sensor Data

In this tutorial, we will cover the steps to POST your sensor data via the Leftover Labs API so you can visualise them and collect them in a graph.

If you haven’t set up your account and created a Graph and Dataset yet, you can do so by following this guide here.

API Endpoint [API Docs]

The Leftover Labs API endpoint to post sensor data is:

https://api.leftoverlabs.com/graph/data/create/

Required Headers

Ensure you include the following headers in your POST request:

• Content-Type: application/json
• api-key: YOUR_API_CREDENTIALS_KEY
• dataset-id: YOUR_DATASET_ID

Request Payload

Your request should include the following JSON payload:

        
{
    "sensor_value": "10"
}
        
    

You can also include an optional timestamp to specify when the data was collected. If not provided, the current time will be used.

        
{
    "sensor_value": "10",
    "timestamp": "2023-07-15T14:30:00Z"
}
        
    

Timestamp Format

The timestamp should be in ISO 8601 format: YYYY-MM-DDTHH:MM:SSZ

Format Components:

• YYYY: Four-digit year
• MM: Two-digit month
• DD: Two-digit day
• T: Separator between date and time
• HH: Two-digit hour (24-hour format)
• MM: Two-digit minute
• SS: Two-digit second
• Z: UTC timezone indicator

Example Implementation

Here is an example Python code snippet to help you POST your sensor data: