This board/chip uses I2C 7-bit address between 0x60-0x80, selectable with jumpers
Terminal block for power input (or you can use the 0.1′′ breakouts on the side)
Reverse polarity protection on the terminal block input
A spot to place a big capacitor on the V+ line (in case you need it)
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
Driver Chip: PCA9685
Length (mm): 62
Width (mm): 25
Height (mm): 5