Node-RED × formulize — sensor streams to equations, in the flow editor.

Install the palette

From Node-RED, open Menu → Manage palette → Install and search node-red-contrib-formulize. Or from a terminal in your ~/.node-red directory:

# installs formulize-fit, formulize-predict, formulize-drift
npm i node-red-contrib-formulize

Drop formulize-fit after any sensor node

The formulize-fit node accepts a CSV string or an array of objects on msg.payload. Wire it downstream of your MQTT-in, Modbus, HTTP, or file-in node. Configure the target column (what to predict) and the domain (physics / chemistry / biology / generic).

Inject the sample CSV

Drop an inject node with the sample payload below. Deploy the flow. Fire the inject once — the debug panel prints the equation, R², and a share URL within 4–8 seconds.

# sample payload — HVAC coil, 200 rows
msg.payload = `t_supply,t_return,flow_gpm,kwh
44.2,55.1,12.3,3.4
44.5,55.4,12.6,3.5
...`;

See the equation in the debug panel

Output on msg.payload:

{
  "equation": "kwh = 0.083 * flow_gpm * (t_return - t_supply)",
  "latex": "\\dot Q = c_p\\,\\dot m\\,\\Delta T",
  "r2": 0.996,
  "endpoint_url": "https://formulize.dev/f/hvac-9f3a",
  "dim_check": "passed"
}

That endpoint is live. POST new sensor rows to it, get back predictions. Or wire formulize-predict downstream to stay inside Node-RED.