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 16-Channel 12-bit PWM Servo Driver - I2C interface
16-Channel 12-bit PWM Servo Driver - I2C interface
MPN :
SKU : I2Cservo-C50
Stock : 7pcs
Price:PKR 400.00
you can chain up to 62 of them to control up to 992 servos - all with the same 2 pins!
Driving servo motors with the Arduino Servo library is pretty easy, but each one consumes a precious pin - not to mention some Arduino processing power.  The Adafruit 16-Channel 12-bit PWM/Servo Driver will drive up to 16 servos over I2C with only 2 pins.  The on-board PWM controller will drive all 16 channels simultaneously with no additional Arduino processing overhead.  What's more, 
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).
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
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
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