# AtomFast → ESP32 → Web UI: reconstructing dosimeter BLE telemetry

> AtomFast → ESP32 → Web UI implements a read-only BLE gateway for AtomFast dosimeters. ESPHome firmware parses a 13-byte measurement payload into count rate, dose, battery and temperature readings and publishes them in a browser; protocol notes map GATT characteristics and payload fields.

- 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/VibeEngineering-LLC/atomfast-esp32>
- Primary source: <https://github.com/VibeEngineering-LLC/atomfast-esp32/blob/e041955c3ad2c9d7a58d8261916adfa3449cd080/README.md>
- Catalog page: <https://awesomerea.org/resources/atomfast-esp32-case/>
- Record JSON: <https://awesomerea.org/resources/atomfast-esp32-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/atomfast-esp32-case/index.md)

## Requirements & limits

- **Prerequisites:** An AtomFast 5xx BLE dosimeter and a supported ESP32 board are required.
- **Prerequisites:** The documented ESPHome path requires Python 3.10+ and ESPHome 2026.5 or newer.
- **Testing evidence:** The author reports that the ESP32-C3 build still awaits device smoke testing.
- **License:** MIT license.

## Primary sources

1. <https://github.com/VibeEngineering-LLC/atomfast-esp32/blob/e041955c3ad2c9d7a58d8261916adfa3449cd080/README.md>
2. <https://github.com/VibeEngineering-LLC/atomfast-esp32/blob/e041955c3ad2c9d7a58d8261916adfa3449cd080/references/atomfast-onair-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.