USB-Meter
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Documentation
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Project History.md
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# Project History |
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## Origin |
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This project started as a proof of concept for reverse engineering three Bluetooth-enabled USB meters sold under the Ruideng name: |
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- `UM25(C) V2.0` |
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- `UM34(C) V2.3` |
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- `TC-66C` |
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## Initial Goal |
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The original goal was to discover how these devices expose their data over Bluetooth and to build a working software prototype capable of reading and displaying that data. |
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## Progress Reached |
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The project progressed to the point where data could be obtained from the devices. |
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At that stage, active work stopped. |
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## Current Knowledge Gaps |
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At this point, the exact status of the reverse engineering effort is not fully known: |
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- it is not clear which payload fields were fully decoded |
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- it is not clear which payload fields remain unknown |
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- it is not clear how complete the protocol understanding is for each model |
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The project code itself is now the main surviving reference for what was achieved. |
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## Available Resources |
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The original external research resources are no longer available, except for what is already included in this repository. |
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Because of that, the project should treat the existing source code and notes as the baseline for rebuilding protocol knowledge. |
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## Current Direction |
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The next stage is not to restart reverse engineering from scratch, but to document what is already present in the codebase and collect newly discovered materials in a structured way. |
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That includes: |
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- manuals |
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- specifications |
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- payload observations |
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- protocol notes |
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- reverse engineering findings for each supported meter model |