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with the bootloader reading from this flash and programming the main code flash only after verification
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Troubleshooting & Repair
Is soldering required
AT+CIPSTART for TCP socket connections
Bluetooth UP Speaker 2.3mm) with the bootloader reading fromBluetooth UP SpeakerBluetooth Stereo Audio Receiver Module, 3V 5V for Amplifiers Sound Recorder and Sound Circuit Electronic Hobby Kit. This is a Bluetooth audio receiver module, transmitting MP3 and other common audio formats' audio signals. It's simple to set up and use, and once connected to another Bluetooth system such as your phone or laptop, it can receive and translate signals into an output format compatible with speakers. It has three output
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