Case study

Wireless Doorbell Clone: reconstructing a Grundig QH-831A remote frame

Wireless Doorbell Clone reconstructs the Grundig QH-831A doorbell remote's transmitted data frame and implements transmitters in Arduino and MicroPython. The notes give the bit sequence and 475 µs and 1435 µs pulse lengths, while the repository includes captured radio data.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-07
Evidence class: C2 code & docs, no demo or download

Stars: 1
Last commit: 2018-10-05
Language: C++
License (GitHub): MIT

GitHub data as of 2026-11-10

Copy as Markdown View JSON Cite

Evidence

Observed: Code, documentation and a demo observed; no download method found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: Investigating the signal requires an SDR; transmitting it requires an Arduino- or MicroPython-compatible board and a 433 MHz ASK transmitter.
Prerequisites: The documented software tools are GQRX, Audacity and Arduino IDE.
License: MIT License.

Cite

BibTeX

@misc{wireless-doorbell-clone-case,
  title = {{Wireless Doorbell Clone: reconstructing a Grundig QH-831A remote frame}},
  howpublished = {\url{https://github.com/rpidanny/wireless-doorbell-clone}},
  url = {https://github.com/rpidanny/wireless-doorbell-clone},
  urldate = {2026-11-07},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/wireless-doorbell-clone-case/}}
}

Plain text

Wireless Doorbell Clone: reconstructing a Grundig QH-831A remote frame. https://github.com/rpidanny/wireless-doorbell-clone (accessed 2026-11-07). Awesome REA entry: https://awesomerea.org/resources/wireless-doorbell-clone-case/

Useful? Star Awesome REA on GitHub2.4k

About this entry

The description was reviewed against primary sources.

Report an outdated entry Suggest a translation fix

Primary sources

QH831A.md GitHub · rpidanny/wireless-doorbell-clone · Revision e5f0d49
README.md GitHub · rpidanny/wireless-doorbell-clone · Revision e5f0d49