SAM DUMONT

Freelance Cloud & AI Platform Engineer | ex-AWS
Data platforms · Garmin apps · Sensor firmware · Remote-first

Laeken, Belgium

// BLOG

// TAG: ESP32

backup ble bluetooth bot-detection claude code claude-code e-invoicing embedded esp32 firmware garmin gickup gitea github go kubernetes legacy-software nginx nrf52 open-source openerp peppol protocol python reverse-engineering security self-hosting skills softdevice telemetry terraform voice writing

Reverse-engineering the Garmin HRM 600: native Running Dynamics from a fake strap

Decoding the Garmin HRM 600's BLE stack (Multi-Link, GFDI, EventSharing protobuf) until a Fenix 8 showed native Running Dynamics from an ESP32 that never touched a chest. A Bluetooth sniffer, a couple dozen probe scripts, an encryption wall, and a decompiled Android app, AI-directed by someone who isn't a reverse engineer.

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reverse-engineering bluetooth garmin esp32 protocol claude-code
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