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⏱️ Chapters 00:00 Introduction and Idea 00:24 Testing the Bluetooth Multimeter 01:28 Disassembly and Teardown 02:20 Guided Meditation Sponsor – JLCPCB 05:24 Research and GitHub Discoveries 06:14 Replacing Bluetooth with ESP32 08:46 Logic Analyzer Setup and Findings 10:03 Triggering Data Transmission 11:46 Decoding and Matching Data 12:40 Web Server and Display Success 13:42 Powering the ESP32 from Batteries 15:00 Final Assembly and Demo
🎉 Video Summary I wanted to get readings from my cheap Bluetooth multimeter onto a web page, so I replaced its internal module with an ESP32. I used a logic analyser to decode the serial protocol and a boost converter to power the ESP32 from the multimeter's batteries, resulting in a Wi-Fi multimeter that hosts its own web server.