2016 New Keyestudio 16-channel 12-bit PWM / Servo Driver w/ I2C Interface for Arduino - Black + Yellow Suitable for Color Printing, Medical Diagnosis, Calibration of PC Color Monitor + More
Features: 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 and Chain-able design. 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. A spot to place a big capacitor on the V+ line (in case you need it). 220 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. This board/chip uses I2C 7-bit address between 0x60-0x80, selectable with jumpers.