From SB-Components Wiki
Raspberry Pi Servo HAT
16 Channel Servo Driver HAT for Raspberry Pi is a motor driver HAT from which one can control up to 16 motors simultaneously. If you're building a robot with a lot of moving parts, or if you need to monitor a lot of servo motors with PWM yields, the microcontroller's limited PWM yields will be a big problem. The most important thing you can do to solve this problem is to obtain a 16-Channel 12-Bit PWM/Servo Driver.
- Adjustable frequency PWM up to about 1.6 kHz
- Up to 16-Channel servo/PWM outputs, 12-bit resolution for each channel (4096 scales)
- 3 pin connectors in groups of 4 so you can plug in 16 servos at once
- This board/chip uses an I2C 7-bit address
- 40-Pin GPIO accessibility
- I2C controlled and power supply connector
- Compatible with all the Raspberry Pi Models such as 4B, 3B+, 3, 2, B+, A, Zero, Zero W, etc.
- Power supply: 5V OR 6V (power supply connector)
- Servo voltage: 5V
- Logic voltage: 3.3V
- Driver: PCA9685
- Control interface: I2C/GPIO
|Servo Driver HAT||BCM|
- Stack Servo HAT on Raspberry Pi.
- Now connect the external power supply of 6V - 12V DC on the Green connector as shown below, Turn on the adapter and it will power the Raspberry Pi.
- Now connect Servo motor on any servo port ranging between 0-15.
- Clone Github repository by running below command in terminal.
- It will clone the repository in the '/home/pi' location, To enter cloned repository, enter the below command.
- Now run the below command to execute the python code.
sudo python3 servo_controller.py
- If you are using any other pin for servo motor (between 0-15) then change the default servo pin to the designated pin in code i.e
if __name__=='__main__': controller = I2C_Controller(0x40, debug=False) controller.setPWMFreq(50) while True: for i in range(500,2500,10): controller.Set_Pulse(15,i) #setting 15th pin of the servo header(forward direction) sleep(0.05) for i in range(2500,500,-10): controller.Set_Pulse(15,i) #setting 15th pin of the servo header(backward direction) sleep(0.05)