Stream live sensor data into LibreOffice Calc

DAELOC connects your Arduino, Raspberry Pi, or IoT devices to Calc using Serial, TCP, or MQTT — log, chart, and even send data back in real time.

Download v2.1.1 for Win / Linux / MacOS

New! Latest release: v2.1.1 (March 23, 2026)

What you can do with DAELOC

Real-Time Logging

Capture data live from Serial, TCP, or MQTT sources into your spreadsheet.

Chart as You Stream

Visualize incoming data instantly using charts or sparklines — great for sensors and time series.

Bi-Directional Control

Send commands from Calc back to your devices — perfect for automation or interactive setups.

PLX-DAQ Compatible

Supports a modern version of PLX-DAQ mode for easy Arduino integration.

Select Your Pricing Plan

Free

€0

For hobbyists.

  • Serial only, 9600 baud
  • PLX-DAQ, CSV
  • 250 rows or 5 minutes

Personal

€19.99

For personal usage.

  • Serial, TCP, and MQTT
  • PLX-DAQ, CSV and JSON
  • No row/time limits
Buy Now

Commercial

€99.99

For commercial usage.

  • Serial, TCP, and MQTT
  • PLX-DAQ, CSV and JSON
  • No row/time limits
Buy Now

What's New in v2.1

UI

  • Reactive Status Bar: Feedback for operations (saves, clears, etc.).
  • Default Filenames: Automatic timestamped names for new workbooks.
  • Automatic reloads: Auto-refreshing ports and sheets when switching tabs.

Fixes & Stability

  • Protocol Robustness: New validation layer prevents crashes on malformed input.
  • JSON & CSV Fixes: Improved parsing, and empty cell handling.
  • CUSTOMBOX Fix: Corrected label and state behavior for checkboxes.

New Features

  • Wildcard Ranges: Support for infinite rows and columns (e.g., A1:D- or A1:-1).

Try it with Arduino + LibreOffice

Download the extension and run our step-by-step demo project with a DHT11 temperature sensor.

View Example Project