# Skannerz Commander: reconstructing the toy's trade protocol

> Skannerz Commander trade research reconstructs the electronic toy's three-pin exchange protocol from a 200 kHz logic-analyzer capture and controlled hardware experiments. Its documentation covers clock phases, handshake, frames and monster payload fields; an Arduino slave emulator implements the exchange, which the author reports using in real trades.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-08
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/uuksu/skannerz-commander-trade-reversing>
- Primary source: <https://github.com/uuksu/skannerz-commander-trade-reversing/blob/b4b68a5ad1ffc66fc4000883ab04ab467b313a19/PROTOCOL.md>
- Catalog page: <https://awesomerea.org/resources/skannerz-commander-trade-protocol-case/>
- Record JSON: <https://awesomerea.org/resources/skannerz-commander-trade-protocol-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/skannerz-commander-trade-protocol-case/index.md)

## Requirements & limits

- **Prerequisites:** A 5 V Arduino Uno or Nano and three wires are needed for the slave emulator; 3.3 V boards need level shifting.
- **Prerequisites:** Reproducing the capture analysis requires Python 3 and numpy.
- **Limits:** The slave-side reject byte and HP zero remain open questions.
- **License:** AGPL-3.0 license.

## Primary sources

1. <https://github.com/uuksu/skannerz-commander-trade-reversing/blob/b4b68a5ad1ffc66fc4000883ab04ab467b313a19/PROTOCOL.md>
2. <https://github.com/uuksu/skannerz-commander-trade-reversing/blob/b4b68a5ad1ffc66fc4000883ab04ab467b313a19/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.