This device uses I2C communication and is equipped with a PWM driver and a clock. This means it will be quite different from the TLC5940 series. You don't need to constantly send signals and occupy your microcontroller!
It is compatible with 5V, which means you can also control it with a 3.3V microcontroller and safely drive it to a 6V output (if you want to control the white or blue indicator lights, a positive voltage of 3.4 or higher is also acceptable)
The 6 address selection pin enables you to connect 62 driver boards to a single I2C bus, providing a total of 992 PWM outputs. That would be an extremely large amount of resources.
1.6KHz adjustable frequency PWM output
Prepare the output of the stepper motor with 12-bit resolution. This means that at an update rate of 60Hz, a resolution of 4us can be achieved.
Configurable push-pull output or open-collector output
The output enable pin enables the rapid disable of all outputs.
Characteristics:
The PCA9685 chip is located in the center of the small board.
Power input terminal
Green power indicator light
In the 4 groups of 3-pin connectors, it is convenient for you to insert 16 servo motors at once (the plugs of the servo motors are slightly wider than 0.1", so you can place 4 pairs of 0.1" connectors)
Reverse polarity protection for the input on the power strip
Level cascading design
A large capacitor is placed on the V+ line (in some cases, you may need it). The external input voltage is determined by this 10V 1000uf capacitor.
A 220-ohm series resistor is placed on each of the PWM output lines to protect them and to facilitate the driving of LEDs.
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