CJMCU PCA9685 16 Channel 12 bit PWM Servo Driver I2C Controller Interface Module Board For Arduino Raspberry Clock 3.3V-5V It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4+ forward voltages) 6 address select pins so you can wire up to 62 of these on a single i2c bus, a total of 992 outputs - that's a lot of servos or LEDs Adjustable frequency PWM up to about 1.6 KHz Configurable push-pull or open-drain output Output enable pin to quickly disable all the outputs We wrapped up this lovely chip into a breakout board with a couple nice extras 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 (in case you need it) 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 included: 1 x PCA9685 16 Channel 12 bit PWM Servo Driver I2C Interface for Arduino Raspberry