The USB-C interface can be used to burn firmware and charge. (cc has been pulled down to support identification of cc cable charging)
18650 power supply, charging adopts ip5306 solution switch step-down charging, supporting 5v2.1a charging power. (Please do not use batteries that are too poor. Batteries that are too poor may run the risk of overheating or even catching fire during charging)
ch340c+esp8266 automatic download circuit.
The sensor supports bno080/085, mpu6050 (no need to solder int pad when using mpu6050)
It can work normally using USB power supply without soldering the battery box or installing the battery.
Automatic dual power switching, automatically disconnects the battery power supply after plugging in the USB power supply, and will not backfeed the battery
Not verified, please check carefully before proofing
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