Solder the header strip to the controller board (except for the relay module), then solder the green LED to D1 and the red LED to D2. Next, solder a 220 Ω resistor to R1 and a 4.7 kΩ resistor to both R2 and R3. Solder the PH2.0 connector to the board, and then solder the XT30 connector to the board.
For one INA226 module, connect VCC and A0 on the back of the board to change the address to 0x41.
If the relay module does not use the header strip, solder wires directly and connect them to the relay module. The top pin is 5V, the middle pin is GND, and the bottom pin is the signal pin.
Install the modules onto the board. When installing the TB6612FNG modules, ensure the capacitor faces the right-hand side (both GND pins should face the left-hand side), and the USB connector for the BackPill faces the left-hand side. The INA226 with address 0x41 is installed on the right side of the board.
Warning: Ensure the TB6612FNG modules are installed correctly, as incorrect installation may cause them to explode.
No matter the type of power supply or configuration, it is recommended to connect the battery in an easy-to-remember orientation and label the polarity clearly.
Connect the 18650 batteries in series. If a battery protection board is being used, connect it according to the manufacturer’s instructions.