Features

   • 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!

   • 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

   • 12-bit resolution for each output - for servos, that means about 4us resolution at 60Hz update rate

   • 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

• 5pcs x PCA9685 Module