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ESP12 Pinouts:
press the set button to exit that option
Brown – Negative
It comes with a trainer port to help beginners learn flying
PAM8403 Digital Power Amplifier Trainer Kits ESP12 Pinouts:PAM8403 Digital Power Amplifier The PAM8403 5V Two channel Stereo is a 3W+3W, class D audio amplifier, allowing it to achieve high quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low pass output filters, thus saving system cost and PCB area. You can power the pam8403 amplifier board 5v using your mobile charger or can be by a computer USB plug. You can use two speakers 3 5 watts