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Bluetooth enables short-range wireless communication between devices.

1 vote

Get data from Bluetooth scale

What you need to do is do some bluetooth sniffing to find out how the device is communicating with the phone. … Here is a good article on doing that : http://nilhcem.com/iot/reverse-engineering-simple-bluetooth-devices …
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Arduino Nano 33 IOT - Bluetooth Classic (Serial)

This library does NOT have any bluetooth functions though. … Therefore, until someone writes a library which lets you control the bluetooth functions of that ESP32 chip, I don't think you'll be able to send arbitrary serial data via bluetooth. …
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