# dsh-ls125-uv-probe: reconstructing the LS125 probe protocol and host

> dsh-ls125-uv-probe reconstructs the UART exchange between a LinShang LS125 meter and its UVALED-X3 UV probe and implements a replacement STM32F103 host. Its protocol notes cover 9600 8N1 framing, polling and clear commands, measurement fields and CRC-16/MODBUS. Capture and decoding scripts and a sample trace accompany the agent skill.

- 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/2333hutao/dsh-ls125-uv-probe>
- Primary source: <https://github.com/2333hutao/dsh-ls125-uv-probe/blob/c252d589d1d021bc08a386cd110e96cd011cb4a2/README.md>
- Catalog page: <https://awesomerea.org/resources/dsh-ls125-uv-probe-case/>
- Record JSON: <https://awesomerea.org/resources/dsh-ls125-uv-probe-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/dsh-ls125-uv-probe-case/index.md)

## Requirements & limits

- **Prerequisites:** The hardware workflow uses a LinShang LS125 meter, UVALED-X3 probe and STM32F103 host board.
- **Testing evidence:** The author reports 21 received frames with zero CRC errors and zero timeouts.
- **Limits:** The meaning of two constant response bytes remains unresolved.
- **License:** MIT license.

## Primary sources

1. <https://github.com/2333hutao/dsh-ls125-uv-probe/blob/c252d589d1d021bc08a386cd110e96cd011cb4a2/README.md>
2. <https://github.com/2333hutao/dsh-ls125-uv-probe/blob/c252d589d1d021bc08a386cd110e96cd011cb4a2/skill/PROTOCOL.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.