Description
PCA9685 16-Channel Servo PWM Controller
The PCA9685 board generates PWM signals for controlling multiple servos or other PWM-driven devices. A microcontroller communicates with it over I²C, so the listing states that only two signal pins are needed to control 16 PWM outputs.
Specifications stated in the listing
- Controller: PCA9685
- Control interface: I²C
- Clock: internal clock
- PWM resolution: 12 bits per output
- Number of PWM outputs: 16
- Servo connectors: 3-pin connections arranged in groups of four
Connect the I²C signal lines to the controller’s SDA and SCL pins. The board’s PWM signal output does not remove the need for an appropriately rated servo power supply. Check the board’s pin labels and supply requirements before wiring; do not draw servo motor current from microcontroller I/O pins.
Typical applications
- Controlling multiple servos from Arduino or another microcontroller
- Robotics and animatronics
- Multi-channel PWM projects
- Prototyping and educational electronics
