# GE Opal 2: ice maker hardware and I2C interface research

> GE Opal 2 research maps the ice maker's connectors, nominal voltages, plumbing and front-panel I2C communication to support an Arduino-based replacement control board. The repository includes protocol notes, a prototype schematic and firmware code. The author identifies incomplete connector documentation and unexamined front-panel and RGB behavior.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/SomeAspy/GE-Opal-Reverse-Engineering-Project>
- Primary source: <https://github.com/SomeAspy/GE-Opal-Reverse-Engineering-Project/blob/c2282f11ea924ad268a5c6396a68aba943da7abe/readme.md>
- Catalog page: <https://awesomerea.org/resources/ge-opal-2-research-case/>
- Record JSON: <https://awesomerea.org/resources/ge-opal-2-research-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/ge-opal-2-research-case/index.md)

## Requirements & limits

- **Prerequisites:** The hardware work concerns a GE Profile Opal 2.0 Ultra ice maker and an Arduino Nano ESP32 prototype.
- **Limits:** The schematics and code are marked unfinished.
- **License:** GPL-3.0 license for the project code and author-created schematics.

## Primary sources

1. <https://github.com/SomeAspy/GE-Opal-Reverse-Engineering-Project/blob/c2282f11ea924ad268a5c6396a68aba943da7abe/readme.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.