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Dev.to
7/11/2026
The original title is about someone building a widget to measure PC heat output. Let me rewrite this for a mobile feed.

The original title is about someone building a widget to measure PC heat output. Let me rewrite this for a mobile feed.

Original: I couldn't find how much heat my PC puts in the room, so I built a widget

Short summary

A developer built HeatLens, an open-source desktop widget that converts PC power draw into BTU/hr heat output and related metrics like session heat, CFM estimates, and still-air temperature rise. The tool pulls sensor data from LibreHardwareMonitor, nvidia-smi, and Linux RAPL, and is built in Python with Tkinter, packaged via PyInstaller for Windows, Linux, and macOS. It is positioned as a context tool rather than a replacement for wall-plug power meters, with clear labeling of estimated vs measured values.

  • •HeatLens is an open-source desktop widget showing PC heat output in BTU/hr, session heat, CFM estimates, and still-air rise
  • •Built in Python/Tkinter; pulls from LibreHardwareMonitor, nvidia-smi, and Linux RAPL; MIT licensed on GitHub
  • •Intended as contextual guidance, not a replacement for wall-plug meters like Kill-A-Watt

Generated with AI, which can make mistakes.

#ai-tools
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