Add AtomHeart Eclair scale support#41
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- Add ECLAIR scale type with BLE UUIDs (WRITE_CHAR_ECLAIR, READ_CHAR_ECLAIR)
- Add Eclair command arrays: TARE, START_TIMER, STOP_TIMER, RESET_TIMER
- Add calculateXOR() and readInt32LittleEndian() helpers
- Add Eclair detection in init() via device name prefix and characteristic discovery
- Skip IDENTIFY/NOTIFICATION_REQUEST for Eclair (not needed)
- Add Eclair weight packet parsing ('W' header, int32 LE, XOR validation)
- Skip heartbeat for Eclair (not required)
- Add Eclair to scale compatibility table and checklists
- Bump version to 3.4.0
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Hi,
This PR adds support for the AtomHeart Eclair Bluetooth scale.
A quick introduction: AtomHeart is a solo studio I (OPC) founded in 2022, focused on coffee smart hardware. The Eclair scale launched in the Chinese market in 2024. Being a one-person operation with an uncompromising pursuit of performance has kept production limited — it's only been available in China so far — but we're planning to bring it to more markets this year. The Eclair already works with Bluetooth-enabled espresso machines like Gaggiuino and Decent, and the shotStopper project is fantastic — we'd love for Eclair to be part of it.
What this PR does:
Adds ECLAIR scale type with full BLE protocol support (service UUID, characteristics, XOR validation)
Implements tare, startTimer, stopTimer, and resetTimer with Eclair-specific 3-byte command packets
Parses weight data from Eclair's 10-byte notification packets (W header, int32 LE weight in mg, uint32 timer in ms)
Skips identify/notification-request and heartbeat for Eclair (not required by the protocol)
Updates the compatibility table and bumps the library version to 3.4.0
Testing: All four commands and the full shotStopper call chain (resetTimer → startTimer → tare → … → stopTimer) have been verified on an ESP32-S3 Dev Module with BLE connection stability throughout.
Happy to answer any questions or make adjustments — feel free to reach out here.
Detail logs: