# chave-sandeiro: investigating the Renault Sandero turn-signal switch

> chave-sandeiro documents an investigation of the Renault Sandero turn-signal switch through connector, interior and schematic images. An accompanying Arduino sketch reads turn-signal and headlight inputs from digital pins and prints state changes over serial.

- Type: Case study
- Targets: Firmware
- 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/lucas458/chave-sandero>
- Primary source: <https://github.com/lucas458/chave-sandero/blob/46a393e682b2472bba25e0089a3d24ed4aeea9dd/README.md>
- Catalog page: <https://awesomerea.org/resources/chave-sandero-case/>
- Record JSON: <https://awesomerea.org/resources/chave-sandero-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/chave-sandero-case/index.md)

## Requirements & limits

- **Prerequisites:** The documented sketch uses Arduino digital inputs and a 9600-baud serial connection.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/lucas458/chave-sandero/blob/46a393e682b2472bba25e0089a3d24ed4aeea9dd/README.md>
2. <https://github.com/lucas458/chave-sandero/blob/46a393e682b2472bba25e0089a3d24ed4aeea9dd/chave_sandero/chave_sandero.ino>

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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.