Data Node

Data nodes are used to record data with a test in real time. They can accept any data type, and simply return it after recording it.

• Nodes meant to be used with the Dashboard can only accept number data types.
• They cannot perform actions, they can only record data.
• Their ID must be unique (or they will be overwritten by a different node), and in all lower case.

Example

Recording the battery level of your computer:

Code Node:

import subprocess
import re

def main() -> int:
    output = subprocess.check_output(["pmset", "-g", "batt"]).decode("utf-8")
    match = re.search(r'(\d+)%', output)
    if match:
        return int(match.group(1))
    return -1

Data Node:

This would record the battery level (or -1 if it cannot be found) every 1000ms whenever the project is running.

Note:

The project as it is currently setup would only run one time. To run the project and record data continuously, you must add a While Node to the script.