2PCS PCA9685 16 CH 12Bit PWM Servo Motor Driver Board Controller IIC Interface for Arduino Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+ and Robot

• Contains an I2C-controlled PWM driver with a built-in clock. It means, unlike the TLC5940 family, you do not need to continuously send it signals tying up your microcontroller; it's completely free running!
• 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs, which is good when you want to control white or blue LEDs with a 3.4V+ forward voltage
• Supports using only two pins to control 16 free-running PWM outputs – you can even chain up 62 breakouts to control up to 992 PWM outputs
• 3 pin connectors in 4 groups, so you can plug in 16 servos at one time (Servo plugs are slightly wider than 0.1" so you can only stack 4 adjacent ones on 0.1"-hole female headers.
• 12-bit resolution for each output - for servos, that means about 4us resolution at an update rate of 60Hz.

It's an I2C-controlled PWM driver with a built in clock. That means that, unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, its completely free running! Output enable pin to quickly disable all the outputs. Terminal block for power input (or you can use the 0.1" breakouts on the side). Reverse polarity protection on the terminal block input. Green power-good LED. 3 pin connectors in groups of 4 so you can plug in 16 servos at once (Servo plugs are slightly wider than 0.1" so you can only stack 4 next to each other on 0.1" header. "Chain-able" design. A spot to place a big capacitor on the V+ line. 330 ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial. Solder jumpers for the 6 address select pins. Package Include: 2 * PWM Servo Motor Driver