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6WD expansion board manual
1. 5V/3.3V Power supply
Here you can switch the voltage supply of 5V and 3.3V. If the jumper cap is used to connect the left two pin headers, it is 5V power supply; if the right two pin headers are connected, it is 3.3V power supply.
2. Bluetooth module interface
2-2 Schematic diagram
The interface has four pins: VCC, GND, TX, RX. VCC is 5V under normal operating conditions.
3-2 Schematic diagram
Active buzzer is used here.
4. Servo interface
4-2 Schematic diagram
The expansion board uses the IIC external drive chip PCA9685 to control the servo, which can support independent control of the 8 channels servo.
5. Motor interface with speed dial
5-2 Schematic diagram
The expansion board has 4 motor interfaces with speed dials, each of which can measure speed, control, speed and stop separately.
6. Motor driver module interface
6-2 Schematic diagram
The motor drive module needs to be plugged in. (Buy this expansion board, we will give 3 matching motor drive modules)
Note: The driver module should be installed in the correct orientation to work properly (as shown in Figure 6-4).
The motor interfaces j1, j2, j3, j4, j5, and j6 are on the back of the expansion board.
6-3 Front and back of motor drive module
6-4 Driver module installation position
7. Power switch
It is used to control the expansion board power switch.
8. T-type power supply interface
Connecting the battery that matches the interface could supply power for the expansion board. The expansion board supply voltage must not exceed 12.6v.
9. Camera interface
9-2 Schematic diagram
The interface has four pins: VCC, GND, RX, TX. Serial port communication mode can be used to connect a serial port camera with WIFI function.