Case study

QuietCool ESPHome: reconstructing IT-AF-SMT BLE control

QuietCool ESPHome replaces firmware on the IT-AF-SMT attic-fan controller and reimplements its stock BLE interface so the vendor app can still control the hub. Its protocol reference draws on analysis of the OEM firmware, Android app, and live BLE captures, while the new firmware adds Wi-Fi and Home Assistant control.

Targets: Firmware · Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-08
Evidence class: C2 code & docs, no demo or download

Stars: 8
Last commit: 2026-10-17
Language: C++
License (GitHub): GPL-3.0

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a download method observed; no demo found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: A QuietCool IT-AF-SMT Smart Attic Fan Control hub.
Limits: Historical analytics charts and AirControl Venting Assist are unimplemented; the browser installer does not support iOS or iPadOS.
License: GPL-3.0 License.

Cite

BibTeX

@misc{quietcool-esphome-native-case,
  title = {{QuietCool ESPHome: reconstructing IT-AF-SMT BLE control}},
  howpublished = {\url{https://github.com/CrazyCoder/quietcool-esphome-native}},
  url = {https://github.com/CrazyCoder/quietcool-esphome-native},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/quietcool-esphome-native-case/}}
}

Plain text

QuietCool ESPHome: reconstructing IT-AF-SMT BLE control. https://github.com/CrazyCoder/quietcool-esphome-native (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/quietcool-esphome-native-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

docs/OEM-BLE-PROTOCOL.md GitHub · CrazyCoder/quietcool-esphome-native · Revision 01cdda3
README.md GitHub · CrazyCoder/quietcool-esphome-native · Revision 01cdda3
LICENSE GitHub · CrazyCoder/quietcool-esphome-native · Revision 01cdda3