⚡ Solar BEMS — PCB Schematic
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Solar BEMS — 11 subsystem blocks · Pin-level connections
12V 10W PV → 3S Li-ion + BMS → 5V MCU rail → Arduino MPPT
Legend
Power generation
Sensing / monitoring
Power conversion
Energy storage
MCU control
Output load
+V_PV (solar input)
+5V_MCU rail
V_BATT bus (P+)
SW node (switching)
I2C bus (SDA/SCL)
1-Wire / gate / PWM
GND / power return