Case study

Ritto 7630: reconstructing intercom bell and door signals

ritto-esp investigates the Ritto 7630 TwinBus intercom's board signals with oscilloscope captures, distinguishing apartment and street bell events by their chime and apartment-line behavior. An ESP32-C6 running ESPHome exposes separate bell sensors and a door-open command to Home Assistant through optocoupled inputs and output.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 13
Last commit: 2026-06-21
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

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

How evidence classes are assigned

Requirements & limits

Prerequisites: A Ritto 7630 intercom, Seeed XIAO ESP32-C6, optocouplers, resistors and USB-C power.
Prerequisites: ESPHome and Home Assistant are used for the supplied configuration and automations.
License: MIT licence.

Cite

BibTeX

@misc{ritto-esp-case,
  title = {{Ritto 7630: reconstructing intercom bell and door signals}},
  howpublished = {\url{https://github.com/duramson/ritto-esp}},
  url = {https://github.com/duramson/ritto-esp},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/ritto-esp-case/}}
}

Plain text

Ritto 7630: reconstructing intercom bell and door signals. https://github.com/duramson/ritto-esp (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/ritto-esp-case/

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About this entry

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Primary sources

README.md GitHub · duramson/ritto-esp · Revision 872acd2
home-assistant/README.md GitHub · duramson/ritto-esp · Revision 872acd2