The t25s80 is the main control chip
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T25S80 Flash
QFN56 main control chip
The silk screen of the power chip above the circuit is found to use this power solution: MT3608 - the capacitor, inductor, and diode are exactly the same.
WiFi camera module, APP support, can be installed on the model plane. Tens of dollars of things, curious how to do, what chip is used.