16 Channel PWM/Servo Driver IIC interface-PCA9685 for arduino or Raspberry pi shield module servo shield

Then you realize that your microcontroller has a limited number of PWM outputs! What now? You could give up OR you could just get this handy PWM and Servo driver breakout.
$11.99
$8.99

You want to make a cool robot, maybe a hexapod walker, or maybe just a piece of art with a lot of moving parts. Or maybe you want to drive a lot of LEDs with precise PWM output. Then you realize that your microcontroller has a limited number of PWM outputs! What now? You could give up OR you could just get this handy PWM and Servo driver breakout.

When we saw this chip, we quickly realized what an excellent add-on this would be. Using only two pins, control 16 free-running PWM outputs! You can even chain up 62 breakouts to control up to 992 PWM outputs (which we would really like to see since it would be glorious)

 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!

*PCA9685 chip was wrapped in the middle of the small plate. 
*Power input terminals. 
*The green power light. 
*Reverse polarity protection input in a patch panel. 
*3 pin connectors in groups of 4 so you can plug-in 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. 
*Cascade design. 
*V + online to place a large capacitance, peripheral input maximum voltage depends on the 10 V 1000 uf capacitance, all PWM output line put a 220 ohm resistor to protect them, and drive leds easily. 
Specifications: *Size: 25 mm * 62 mm. 
*Weight: 11 g. 
*Voltage: DC5-10V power supply. 
*Communication interface: IIC. 
*16 road steering gear control.